Researchers Database

NOGUCHI Katsuyuki

    Faculty Division of Natural Sciences Research Group of Environmental Sciences Assistant Professor
Last Updated :2021/06/22

researchmap

Degree

  • Mar. 2004

Research Interests

  • Earth and Planetary Atmospheric Science 惑星大気 火星大気 惑星探査 金星大気 リモートセンシング 電波掩蔽 観測アルゴリズム 人工衛星 大気汚染 

Research Areas

  • Natural sciences, Space and planetary science
  • Environmental science/Agricultural science, Environmental dynamics
  • Natural sciences, Atmospheric and hydrospheric science

Research Experience

  • 2013 - 2017, 宇宙航空研究開発機構宇宙科学研究所大学共同利用システム研究員
  • 2007 - 2012, 奈良女子大学理学部助教
  • 2012, 奈良女子大学研究院自然科学系助教(現在)
  • 2008 - 2010, JSPS Postdoctoral Fellowships for Research Abroad
  • 2007 - 2007, 日本学術振興会特定国派遣研究者(ドイツ・ブレーメン大学、出張扱い)
  • Oct. 2004 - 2007, 奈良女子大学理学部助手
  • Apr. 2004 Sep. - 2004, 宇宙航空研究開発機構宇宙航空プロジェクト研究員

Education

  • - 2004, The University of Tokyo, Graduate School of Science, 地球惑星科学専攻博士課程, Japan
  • - 2000, The University of Tokyo, Graduate School of Science, 地球惑星物理学専攻修士課程, Japan
  • - 1998, The University of Tokyo, The Faculty of Engineering, 精密機械工学科, Japan

Published Papers

  • Vertical profile of tropospheric ozone derived from synergetic retrieval using three different wavelength ranges, UV, IR, and microwave: Sensitivity study for satellite observation

    Tomohiro O. Sato; Takao M. Sato; Hideo Sagawa; Katsuyuki Noguchi; Naoko Saitoh; Hitoshi Irie; Kazuyuki Kita; Mona E. Mahani; Koji Zettsu; Ryoichi Imasu; Sachiko Hayashida; Yasuko Kasai

    We performed a feasibility study of constraining the vertical profile of the tropospheric ozone by using a synergetic retrieval method on multiple spectra, i.e., ultraviolet (UV), thermal infrared (TIR), and microwave (MW) ranges, measured from space. This work provides, for the first time, a quantitative evaluation of the retrieval sensitivity of the tropospheric ozone by adding the MW measurement to the UV and TIR measurements. Two observation points in East Asia (one in an urban area and one in an ocean area) and two observation times (one during summer and one during winter) were assumed. Geometry of line of sight was nadir down-looking for the UV and TIR measurements, and limb sounding for the MW measurement. The retrieval sensitivities of the ozone profiles in the upper troposphere (UT), middle troposphere (MT), and lowermost troposphere (LMT) were estimated using the degree of freedom for signal (DFS), the pressure of maximum sensitivity, reduction rate of error from the a priori error, and the averaging kernel matrix, derived based on the optimal estimation method. The measurement noise levels were assumed to be the same as those for currently available instruments. The weighting functions for the UV, TIR, and MW ranges were calculated using the SCIATRAN radiative transfer model, the Line-By-Line Radiative Transfer Model (LBLRTM), and the Advanced Model for Atmospheric Terahertz Radiation Analysis and Simulation (AMATERASU), respectively. The DFS value was increased by approximately 96, 23, and 30ĝ ̄% by adding the MW measurements to the combination of UV and TIR measurements in the UT, MT, and LMT regions, respectively. The MW measurement increased the DFS value of the LMT ozone nevertheless, the MW measurement alone has no sensitivity to the LMT ozone. The pressure of maximum sensitivity value for the LMT ozone was also increased by adding the MW measurement. These findings indicate that better information on LMT ozone can be obtained by adding constraints on the UT and MT ozone from the MW measurement. The results of this study are applicable to the upcoming air-quality monitoring missions, APOLLO, GMAP-Asia, and uvSCOPE., Copernicus GmbH, 26 Mar. 2018, Atmospheric Measurement Techniques, 11 (3), 1653 - 1668, doi

    Scientific journal

  • Initial performance of the radio occultation experiment in the Venus orbiter mission Akatsuki

    Takeshi Imamura; Hiroki Ando; Silvia Tellmann; Martin Paetzold; Bernd Haeusler; Atsushi Yamazaki; Takao M. Sato; Katsuyuki Noguchi; Yoshifumi Futaana; Janusz Oschlisniok; Sanjay Limaye; R. K. Choudhary; Yasuhiro Murata; Hiroshi Takeuchi; Chikako Hirose; Tsutomu Ichikawa; Tomoaki Toda; Atsushi Tomiki; Takumi Abe; Zen-ichi Yamamoto; Hirotomo Noda; Takahiro Iwata; Shin-ya Murakami; Takehiko Satoh; Tetsuya Fukuhara; Kazunori Ogohara; Ko-ichiro Sugiyama; Hiroki Kashimura; Shoko Ohtsuki; Seiko Takagi; Yukio Yamamoto; Naru Hirata; George L. Hashimoto; Manabu Yamada; Makoto Suzuki; Nobuaki Ishii; Tomoko Hayashiyama; Yeon Joo Lee; Masato Nakamura

    After the arrival of Akatsuki spacecraft of Japan Aerospace Exploration Agency at Venus in December 2015, the radio occultation experiment, termed RS (Radio Science), obtained 19 vertical profiles of the Venusian atmosphere by April 2017. An onboard ultra-stable oscillator is used to generate stable X-band downlink signals needed for the experiment. The quantities to be retrieved are the atmospheric pressure, the temperature, the sulfuric acid vapor mixing ratio, and the electron density. Temperature profiles were successfully obtained down to similar to 38 km altitude and show distinct atmospheric structures depending on the altitude. The overall structure is close to the previous observations, suggesting a remarkable stability of the thermal structure. Local time-dependent features are seen within and above the clouds, which is located around 48-70 km altitude. The H2SO4 vapor density roughly follows the saturation curve at cloud heights, suggesting equilibrium with cloud particles. The ionospheric electron density profiles are also successfully retrieved, showing distinct local time dependence. Akatsuki RS mainly probes the low and middle latitude regions thanks to the near-equatorial orbit in contrast to the previous radio occultation experiments using polar orbiters. Studies based on combined analyses of RS and optical imaging data are ongoing., SPRINGER HEIDELBERG, Oct. 2017, EARTH PLANETS AND SPACE, 69, 69:137, doi;web_of_science

    Scientific journal

  • Feasibility of retrieving dust properties and total column water vapor from solar spectra measured using a lander camera on Mars

    Naohiro Manago; Katsuyuki Noguchi; George L. Hashimoto; Hiroki Senshu; Naohito Otobe; Makoto Suzuki; Hiroaki Kuze

    Dust and water vapor are important constituents in the Martian atmosphere, exerting significant influence on the heat balance of the atmosphere and surface. We have developed a method to retrieve optical and physical properties of Martian dust from spectral intensities of direct and scattered solar radiation to be measured using a multi-wavelength environmental camera onboard a Mars lander. Martian dust is assumed to be composed of silicate-like substrate and hematite-like inclusion, having spheroidal shape with a monomodal gamma size distribution. Error analysis based on simulated data reveals that appropriate combinations of three bands centered at 450, 550, and 675 nm wavelengths and 4 scattering angles of 3 degrees, 10 degrees, 50 degrees, and 120 degrees lead to good retrieval of four dust parameters, namely, aerosol optical depth, effective radius and variance of size distribution, and volume mixing ratio of hematite. Retrieval error increases when some of the observational parameters such as color ratio or aureole are omitted from the retrieval. Also, the capability of retrieving total column water vapor is examined through observations of direct and scattered solar radiation intensities at 925, 935, and 972 nm. The simulation and error analysis presented here will be useful for designing an environmental camera that can elucidate the dust and water vapor properties in a future Mars lander mission., SPRINGER, Jun. 2017, PROGRESS IN EARTH AND PLANETARY SCIENCE, 4, 4:16, doi;web_of_science

    Scientific journal

  • Role of stationary and transient waves in CO2 supersaturation during northern winter in the Martian atmosphere revealed by MGS radio occultation measurements

    K. Noguchi; Y. Morii; N. Oda; T. Kuroda; S. Tellmann; M. Paetzold

    The Martian atmosphere, which mainly consists of carbon dioxide (CO2), is characterized by extremely low temperatures that cause CO2 gas to freeze and dry ice to form. To date, temperatures below the CO2 saturation temperature, which can be attributed to the effects of atmospheric waves, have been observed in the polar winter and in the mesosphere. Using data from Mars Global Surveyor (MGS) radio occultation measurements, we investigated the role of large-scale atmospheric waves including stationary and transient waves at northern high latitudes in winter on CO2 supersaturation. A distinct longitudinal dependence of CO2 supersaturation was observed at altitudes higher than the pressure level of 200-400Pa, where a stationary wave with a wave number of 2, whose temperature amplitude had minima at 30-100Pa, lowered the background temperature to a level close to the CO2 saturation temperature. However, the stationary wave alone was not sufficient to cause CO2 supersaturation. Additional temperature disturbances caused by transient waves, namely, superposition of both waves, had a significant role in CO2 supersaturation. The longitudinal dependence of the occurrence of CO2 supersaturation revealed by our study might affect the longitudinal distribution of CO2 snowfall and the formation of the seasonal polar ice cap., AMER GEOPHYSICAL UNION, May 2017, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, 122 (5), 912 - 926, doi;web_of_science

    Scientific journal

  • Conversion of the MRO/MCS data into netCDF format and gridding of them for analysis and visualization by the use of GrADS

    NOGUCHI Katsuyuki; Katsuyuki Noguchi; Hiroo Hayashi

    2017, Journal of Space Science Informatics Japan, 6, 109 - 116, doi

  • HR図を用いた宇宙科学の授業―生徒の直感的な理解の一助となるような指導方法の検討―

    野口克行; 米田恒隆

    2017, 教育システム研究別冊(奈良女子大学教育システム研究開発センター), 157 - 160

  • 教育用計算機の利用を想定した3次元データの簡便な可視化手法の提案―gnuplotの利用

    野口 克行

    2016, 宇宙科学情報解析論文誌, 5, 123 - 131

  • Estimation of changes in the composition of the Martian atmosphere caused by CO2 condensation from GRS Ar measurements and its application to the rederivation of MGS radio occultation measurements

    K. Noguchi; S. Ikeda; T. Kuroda; S. Tellmann; M. Paetzold

    We propose a method to estimate seasonal changes in the composition of the Martian atmosphere, which is influenced by CO2 condensation due to the polar nights at southern high latitudes. The method relies on measurements of the Ar concentration obtained by the Gamma Ray Spectrometer (GRS) onboard Mars Odyssey. We assume that the Martian atmosphere is composed of CO2, N-2, and Ar, and is vertically well mixed. Since N-2 and Ar do not condense even during the polar nights, the ratio of N-2 and Ar remains constant, and the concentrations of N-2 and CO2 can be estimated from Ar measurements. Estimates of the atmospheric composition were utilized for the rederivation of temperature and pressure profiles in the Mars Global Surveyor (MGS) radio occultation measurements (approximate to 70 profiles of approximate to 20,000 profiles in the whole data set) at southern polar latitudes (90 degrees S-75 degrees S) during the autumn, winter, and spring seasons (Ls = 0 degrees-240 degrees). The rederived profiles indicated that use of the standard global composition overestimated the temperature by at least approximately 5 K at Ls = approximate to 120 degrees (midwinter), when the largest CO2 depletion occurred and the CO2 volume mixing ratio fell to 78%. The occurrence and degree of CO2 supersaturation were several times higher and larger, respectively, in the rederived temperature profiles than in the original MGS profiles. This suggests that consideration of CO2 depletion during southern polar nights is needed when studying CO2 supersaturation using radio occultation profiles., AMER GEOPHYSICAL UNION, Dec. 2014, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, 119 (12), 2510 - 2521, doi;web_of_science

    Scientific journal

  • Effect of surface BRDF of various land cover types on geostationary observations of tropospheric NO2

    K. Noguchi; A. Richter; V. Rozanov; A. Rozanov; J. P. Burrows; H. Irie; K. Kita

    We investigated the effect of surface reflectance anisotropy, bidirectional reflectance distribution function (BRDF), on satellite retrievals of tropospheric NO2. We assume the geometry of geostationary measurements over Tokyo, which is one of the worst air-polluted regions in East Asia. We calculated air mass factors (AMF) and box AMFs (BAMF) for tropospheric NO2 to evaluate the effect of BRDF by using the radiative transfer model SCIATRAN. To model the BRDF effect, we utilized the Moderate Resolution Imaging Spectroradiometer (MODIS) products (MOD43B1 and MOD43B2), which provide three coefficients to express the RossThick-LiSparse reciprocal model, a semi-empirical and kernel-based model of BRDF. Because BRDF depends on the land cover type, we also utilized the High Resolution Land-Use and Land-Cover Map of the Advanced Land Observing Satellite (ALOS)/Advanced Visible and Near Infrared Radiometer type 2 (AVNIR-2), which classifies the ground pixels over Tokyo into six main types: water, urban, paddy, crop, deciduous forest, and evergreen forest. We first develop an empirical model of the three BRDF coefficients for each land cover type over Tokyo and then apply the model to the calculation of land-cover-type-dependent AMFs and BAMFs. Results show that the variability of AMF among the land types is up to several tens of percent, and if we neglect the reflectance anisotropy, the difference with AMFs based on BRDF reaches 10% or more. The evaluation of the BAMFs calculated shows that not considering BRDF will cause large errors if the concentration of NO2 is high close to the surface, although the importance of BRDF for AMFs decreases for large aerosol optical depth (AOD)., COPERNICUS GESELLSCHAFT MBH, 2014, ATMOSPHERIC MEASUREMENT TECHNIQUES, 7 (10), 3497 - 3508, doi;web_of_science

    Scientific journal

  • Quantifying the relationship between the measurement precision and specifications of a UV/visible sensor on a geostationary satellite

    Hitoshi Irie; Hironobu Iwabuchi; Katsuyuki Noguchi; Yasuko Kasai; Kazuyuki Kita; Hajime Akimoto

    To investigate the feasibility of new satellite observations, including air quality (AQ) observations from geostationary (GEO) orbit, it is essential to link the measurement precision (epsilon) with sensor specifications in advance. The present study attempts to formulate the linkage between E and specifications of a UV/visible sensor (signal-to-noise ratio (SNR), full width at half maximum (FWHM) of the slit function, and sampling ratio (SR)) on a GEO satellite. A sophisticated radiative transfer model (JACOSPAR) is used to calculate synthetic radiance spectra that would be measured by a UV/visible sensor observing the atmosphere over Tokyo (35.7 degrees N, 139.7 degrees E) from GEO orbit at 120 degrees E longitude. The spectra, modified according to given sensor specifications, are analyzed by the differential optical absorption spectroscopy technique to estimate the E for slant column densities of O-3 and NO2. We find clear relationships: for example, the e of the O-3 slant column density (molecules cm(-2)) and SNR at 330 nm are linked by the equation log(epsilon) = -1.06 . log(SNR) + 20.71 in the UV region, and the epsilon of the NO2 slant column density and SNR at 450 nm are linked by log(epsilon) = -0.98 . log(SNR) + 18.00, at a FWHM = 0.6 nm (for the Gaussian slit function) and SR = 4. The relationships are mostly independent of other specifications (e.g., horizontal and temporal resolutions), as they affect E primarily through SNR, providing constraints in determining the optimal SNR (and alternatively FWHM and SR) for similar UV/visible sensors dedicated for AQ studies., ELSEVIER SCI LTD, Jun. 2012, ADVANCES IN SPACE RESEARCH, 49 (12), 1743 - 1749, doi;web_of_science

    Scientific journal

  • A study of BRDF over Tokyo for the spaceborne measurements of atmospheric trace gases

    K. Noguchi; A. Richter; J. P. Burrows; H. Irie; K. Kita

    In the present study, we aim at developing an empirical model of BRDF over Tokyo, Japan, which is one of the most polluted areas in Asia, to evaluate the effect of the surface albedo on air-pollution monitoring from space. We used the RossThick-LiSparseReciprocal model with MODIS data to retrieve BRDF information. The BRDF had a strong dependence on season and local time, and the magnitude of the seasonal and local time change was up to 50%., SPIE-INT SOC OPTICAL ENGINEERING, 2012, LAND SURFACE REMOTE SENSING, 8524, doi;web_of_science

    International conference proceedings

  • A feasibility study for the detection of the diurnal variation of tropospheric NO2 over Tokyo from a geostationary orbit

    Katsuyuki Noguchi; Andreas Richter; Heinrich Bovensmann; Andreas Hilboll; John P. Burrows; Hitoshi Irie; Sachiko Hayashida; Yu Morino

    We have conducted a feasibility study for the geostationary monitoring of the diurnal variation of tropospheric NO2 over Tokyo. Using NO2 fields from a chemical transport model, synthetic spectra were created by a radiative transfer model, SCIATRAN, for summer and winter cases. We then performed a Differential Optical Absorption Spectroscopy (DOAS) analysis to retrieve NO2 slant column densities (SCDs), and after converting SCDs into vertical column densities (VCDs), we estimated the precision of the retrieved VCDs. The simulation showed that signal-to-noise ratio (SNR) >= 500 is needed to detect the diurnal variation and that SNR >= 1000 is needed to observe the local minimum occurring in the early afternoon (LT13-14) in summer. In winter, the detection of the diurnal variation during LT08-15 needs SNR >= 500, and SNR >= 1000 is needed if early morning (LT07) and early evening (LT16) are included. The currently discussed sensor specification for the Japanese geostationary satellite project, GMAP-Asia, which has a horizontal resolution of 10 km and a temporal resolution of 1hr, has demonstrated the performance of a precision of several percent, which is approximately corresponding to SNR = 1000-2000 during daytime and SNR >= 500 in the morning and evening. We also discuss possible biases caused by the temperature dependence of the absorption cross section utilized in the DOAS retrieval, and the effect of uncertainties of surface albedo and clouds on the estimation of precisions. (C) 2011 COSPAR. Published by Elsevier Ltd. All rights reserved., ELSEVIER SCI LTD, Nov. 2011, ADVANCES IN SPACE RESEARCH, 48 (9), 1551 - 1564, doi;web_of_science

    Scientific journal

  • Properties of solar wind turbulence from radio occultation experiments with the NOZOMI spacecraft

    A. I. Efimov; T. Imamura; K. -I. Oyama; K. Noguchi; L. N. Samoznaev; A. S. Nabatov; M. K. Bird; I. V. Chashei

    Radio-sounding experiments using signals from the Japanese NOZOMI spacecraft to probe the circum solar plasma were performed from December 2000 through January 2001. They can be used to obtain information about the properties of the solar wind plasma in the region where it is accelerated at heliocentric distances of 12.8-36.9R (s) (where R (s) is the radius of the Sun). Measurements of the intensity and frequency of the received signals were carried out with high time resolution (similar to 0.05 s for the frequency and similar to 0.0064 s for the intensity), making it possible to investigate the anisotropy of inhomogeneities and the spatial spectrum of the turbulence of the circum solar plasma. Analysis of these radio-sounding data has shown that the scintillation index and intensity of the frequency fluctuations decrease approximately according to a power law with increasing distance of the line of sight from the Sun. Measurements of the amplitude fluctuations and estimates of the solar wind velocity derived from spatially separated observations indicate the presence of small-scale inhomogeneities with sizes of the order of 50 km at heliocentric distances less than 25R (s) , which are elongated in the radial direction with anisotropy coefficients from 2.3 to 3.0. The inhomogeneities at heliocentric distances exceeding 30R (s) become close to isotropic., MAIK NAUKA/INTERPERIODICA/SPRINGER, Nov. 2010, ASTRONOMY REPORTS, 54 (11), 1032 - 1041, doi;web_of_science

    Scientific journal

  • Comparison of tropospheric NO2 observations by GOME and the air-quality monitoring network around Tokyo, Japan

    NOGUCHI Katsuyuki; K. Noguchi; H. Itoh; T. Shibasaki; S. Hayashida; I. Uno; T. Ohara; A. Richter; J. P. Burrows

    2009, 日本リモートセンシング学会誌, 29 (2), 398 - 409, doi

  • 衛星センサーSCIAMACHYによる全球メタン観測について

    野口 克行; 有山悠子; 衛藤聡美; 野口克行; 林田佐智子

    2009, 天気, 56 (8), 603 - 611

  • Spatiotemporal Variation in Tropospheric Column Ozone over East Asia Observed by GOME and Ozonesondes

    S. Hayashida; N. Urita; K. Noguchi; X. Liu; K. Chance

    We analyzed tropospheric column ozone (TCO) observed by the GOME-1 (Global Ozone Monitoring Experiment; European Space Agency, 1995) and ozonesondes to determine the spatiotemporal variation in TCO over East Asia from 1996 to 2003. An enhanced TCO belt (E-TCO belt) was observed at approximately 35 degrees N throughout the year. The E-TCO belt moved northward from winter to summer and southward from summer to winter, strongly suggesting connection with the seasonal variation of meteorological conditions. The large enhancement of TCO found over central China in summer suggests that there is significant outflow of ozone from that region. This study presents the first satellite-derived comprehensive picture of the TCO spatiotemporal variation over East Asia, which has not been obtained from limited ground-based measurements., METEOROLOGICAL SOC JAPAN, 2008, SOLA, 4, 117 - 120, doi;web_of_science

    Scientific journal

  • Validation and Comparison of Tropospheric Column Ozone Derived from GOME Measurements with Ozonesondes over Japan

    Katsuyuki Noguchi; Naomi Urita; Sachiko Hayashida; Xiong Liu; Kelly Chance

    Tropospheric column ozone derived from Global Ozone Monitoring Experiment (GOME) measurements (GOME-O(3)) was validated using operational ozonesonde measurements over Japan and compared with Tropospheric Ozone Residual (TOR) derived from Total Ozone Mapping Spectrometer and Solar Backscatter Ultraviolet measurements. The GOME-O(3) validation showed positive biases with a magnitude of less than 3 DU (similar to 10%) and random errors of 5-9 DU (similar to 15-30%) at collocated sonde stations. GOME-O(3) showed better agreement with ozonesonde measurements over Japan than TOR did. The direct comparison between GOME-O(3) and TOR showed the underestimation of TOR during winter and spring in the southern part of Japan (around 30 degrees N)., METEOROLOGICAL SOC JPN, 2007, SOLA, 3, 41 - 44, doi;web_of_science

    Scientific journal

  • Systematic analysis of interannual and seasonal variations of model-simulated tropospheric NO2 in Asia and comparison with GOME-satellite data

    I. Uno; Y. He; T. Ohara; K. Yamaji; J. -I. Kurokawa; M. Katayama; Z. Wang; K. Noguchi; S. Hayashida; A. Richter; J. P. Burrows

    Systematic analyses of interannual and seasonal variations of tropospheric NO2 vertical column densities (VCDs) based on GOME satellite data and the regional scale chemical transport model (CTM), Community Multi-scale Air Quality (CMAQ), are presented for the atmosphere over eastern Asia between 1996 and June 2003. A newly developed year-by-year emission inventory (REAS) was used in CMAQ. The horizontal distribution of annual averaged GOME NO2 VCDs generally agrees well with the CMAQ results. However, CMAQ/REAS results underestimate the GOME retrievals with factors of 2-4 over polluted industrial regions such as Central East China (CEC), a major part of Korea, Hong Kong, and central and western Japan. The most probable reasons for the underestimation typically over the CEC are accuracy of the basic energy statistic data, emission factors, and socio-economic data used for construction of emission inventory. For the Japan region, GOME and CMAQ NO2 data show reasonable agreement with respect to interannual variation and show no clear increasing trend. For CEC, GOME and CMAQ NO2 data indicate a very rapid increasing trend from 2000. Analyses of the seasonal cycle of NO2 VCDs show that GOME data have larger dips than CMAQ NO2 during February-April and September-November. Sensitivity experiments with fixed emission intensity reveal that the detection of emission trends from satellite in fall or winter has a larger error caused by the variability of meteorology. Examination during summer time and annual averaged NO2 VCDs are robust with respect to variability of meteorology and are therefore more suitable for analyses of emission trends. Analysis of recent trends of annual emissions in China shows that the increasing trends of 1996-1998 and 2000-2002 for GOME and CMAQ/REAS show good agreement, but the rate of increase by GOME is approximately 10-11% yr(-1) after 2000; it is slightly steeper than CMAQ/REAS (8-9% yr(-1)). The greatest difference was apparent between the years 1998 and 2000: CMAQ/REAS only shows a few percentage points of increase, whereas GOME gives a greater than 8% yr(-1) increase. The exact reason remains unclear, but the most likely explanation is that the emission trend based on the Chinese emission related statistics underestimates the rapid growth of emissions., COPERNICUS GESELLSCHAFT MBH, 2007, ATMOSPHERIC CHEMISTRY AND PHYSICS, 7 (6), 1671 - 1681, web_of_science

    Scientific journal

  • A global statistical study on the origin of small-scale ozone vertical structures in the lower stratosphere

    K. Noguchi; T. Imamura; K. -I. Oyama; G. E. Bodeker

    [1] We investigated meridional and seasonal variations in small-vertical-scale (wavelengths 0.5 - 3 km) fluctuations of the ozone mixing ratio in the lower stratosphere using ozonesonde data covering wide longitudinal and latitudinal regions in all seasons. The generation of mixing ratio fluctuation is attributed to vertical advection and/or horizontal advection; the former was estimated from the potential temperature fluctuation and the vertical gradient of background mixing ratio, while the latter was obtained by subtracting the vertical advection component from the observed value. The results show that horizontal advection is always the major source of the mixing ratio fluctuation above the potential temperature of 700 K ( similar to 27 km altitude). Below 700 K, the source of the mixing ratio fluctuation depends on latitude; horizontal advection governs the mixing ratio fluctuations at high latitudes, vertical advection dominates at low latitudes, and horizontal advection is relatively dominant in winter - spring, while vertical advection is dominant in summer - autumn in the midlatitudes. These tendencies were confirmed by analyzing the correlation between the small-scale structures of the mixing ratio and the potential temperature. The synthetic distribution of the horizontal advection activity due to synoptic-scale motions calculated from assimilated meteorological data reproduced the seasonal, meridional, and altitudinal tendencies of the observed small-scale fluctuations, suggesting the major contribution of differential advection via large-scale winds., AMER GEOPHYSICAL UNION, Dec. 2006, JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 111 (D23), D23105, doi:10.1029/2006JD007232, doi;web_of_science

    Scientific journal

  • Phase scintillation observation during coronal sounding experiments with NOZOMI spacecraft

    T Imamura; K Noguchi; A Nabatov; KI Oyama; Z Yamamoto; M Tokumaru

    Radio occultation observations of the solar corona at solar offset distances of 12.8-36.9 R-S were performed from December of 2000 to January of 2001, using the Nozomi spacecraft (Planet-B) of Japan. Phase scintillation spectra up to the frequency of similar to 10 Hz were obtained in two-way mode with S-band uplink and X-band downlink. The spectra cannot be represented by a single power law especially for small offset distances. That is, at low frequencies (large scales) the spectra show slopes indicative of Kolmogorov, a local flattening occurs from similar to 0.5 Hz (scale similar to 600 km) to similar to 3 Hz (similar to 100 km), and a steepening occurs again at higher frequencies. This three-component nature of the spectrum was observed with a single method for the first time, although the spectral shape is variable and the three-component feature is not always evident., EDP SCIENCES S A, Sep. 2005, ASTRONOMY & ASTROPHYSICS, 439 (3), 1165 - 1169, doi;web_of_science

    Scientific journal

  • Detectability of lunar plasma clouds from SELENE radio occultations

    AS Nabatov; T Imamura; NA Savich; KI Oyama; K Noguchi

    The SELENE mission includes a dual frequency S- and X-band occultation experiment for the exploration of plasma clouds above the lunar surface. The accuracy of the measurement is mainly limited by the influence of the turbulent media of the Earth's ionosphere and the solar wind plasma. The mission scenario will make accessible only the region along the lunar limb. Still, the radio communication system of the SELENE mission, which consists of three orbiters, is able to provide other occultation configuration. The proposed types of radio occultation will allow exclusion of the effect of the Earth's ionosphere and the solar wind plasma and occultation on both sides of the Moon. The sensitivity is expected to be better than 10(14) el/m(2). The occultation measurement together with the other SELENE mission experiments can present new information on the existence and the origin of the plasma clouds and the interaction of the solar wind with magnetic field anomalies on the surface of the Moon. (C) 2003 COSPAR. Published by Elsevier Ltd. All rights reserved., PERGAMON-ELSEVIER SCIENCE LTD, 2003, MOON: SCIENCE, EXPLORATION AND UTILISATION, 31 (11), 2369 - 2375, doi;web_of_science

    Scientific journal

  • Cislunar plasma exploration with the SELENE radio science system

    KI Oyama; AS Nabatov; NA Savich; T Imamura; Z Yamamoto; K Noguchi

    The SELENE Project of Japan includes three spacecraft: a main orbiting, satellite and two subsatellites. Among many scientific objectives of the Project is the exploration of plasma formations above the lunar surface. The thin plasma layer above the area of the Moon, presented to the Sun, was first detected in radio occultation experiments conducted during 1972 with the Soviet lunar satellite "Luna-19". The SELENE Project radio science experiment will be realized by means of a dual S- and X- band transmitter installed onboard the orbiter and Earth based antennas. The effect of the thin plasma layer near the Luna can be hidden by the fluctuations of the total electron content of the Earth's ionosphere. Dual spacecraft occultation configurations can remove partially the influence of the Earth's ionosphere. Several dual spacecraft configurations are discussed and upper error limits of total electron content measurements are estimated. (C) 2002 COSPAR. Published-by Elsevier Science Ltd. All rights reserved., PERGAMON-ELSEVIER SCIENCE LTD, 2002, LUNAR EXPLORATION 2000, 30 (8), 1915 - 1919, doi;web_of_science

    Scientific journal

  • Radio occultation projects in space programs of Japan

    NOGUCHI Katsuyuki; Noguchi, K; T. Imamura; K.-I. Oyama; A. S. Nabatov

    2002, Radio Science Bulletin, 303, 27 - 31

  • Application of the GPS network to estimate the effect of the terrestrial ionosphere on the radio occultation measurements of planetary ionospheres

    K Noguchi; T Imamura; KI Oyama; A Saito

    A feasibility study to observe the low-density Martian nightside ionosphere and the cislunar electron layer by radio occultation technique is presented. Since the total electron contents (TECs) along the ray paths of radio occultation in the ionospheres of Mars and the Moon are comparable to the fluctuation of the TEC of the terrestrial ionosphere, the distortions of radio occultation data by the terrestrial ionosphere should be taken into account. Local time and seasonal dependences of the terrestrial TEC fluctuations are investigated using the GPS receiver network, showing that the terrestrial ionosphere is calm at night in winter and that this period is suitable for the radio occultation measurements of the planetary ionospheres. A method is also developed to estimate the terrestrial TEC fluctuation along the ray path of radio occultation from GPS TEC data., AMER GEOPHYSICAL UNION, Nov. 2001, RADIO SCIENCE, 36 (6), 1607 - 1613, doi;web_of_science

    Scientific journal

  • First test of the NOZOMI Radio Science System in actual space flight

    KI Oyama; AS Nabatov; NA Savich; Z Yamamoto; T Imamura; T Ichikawa; K Noguchi

    The Japanese NOZOMI spacecraft (S/C) launched on the 4(th) of July, 1998 was equipped with a coherent dual frequency Radio Science System (RSS) to explore the Martian atmosphere and the solar wind plasma by the radio sounding method. Several communication operations were performed in order to test and calibrate the RSS during the cruise phase of the flight to Mars. S- and X- band signals emitted by the S/C were received and recorded at the Usuda tracking station (Japan). Analysis of the data processing results revealed the influence of the S/C spin on all signal parameters. In particular the S/C spin shifted the frequencies of both the S- and X- band signals, destroying their coherency. It was shown that the effect of the spin stabilizing system can be removed from the final occultation results and the Nozomi S/C can be successfully used in radio occultation experiments. (C) 2001 COSPAR. Published by Elsevier Science Ltd. All rights reserved., ELSEVIER SCIENCE BV, 2001, PLANETARY IONOSPHERES, 27 (11), 1847 - 1850, doi;web_of_science

    Scientific journal

  • Efficiency of a Group Consisted of Robots with Heterogeneous Motion Algorithms

    NOGUCHI Katsuyuki; Kurabayashi, D; J. Ota; T. Arai; K. Noguchi

    1999, Journal of the Society of Instrument and Control Engineers, 35 (11), 1377 - 1384, doi

  • Profile retrieval of the stratospheric ozone and nitrogen dioxide with spectrometer type balloon-borne optical ozone sensor

    MURATA Isao; NOGUCHI Katsuyuki

    Jan. 2020, JAXA Research and Development Report, JAXA-RR-19 (002)

    Research society

  • Concept of small satellite UV/visible imaging spectrometer optimized for tropospheric NO2 measurements in air quality monitoring

    Tamaki Fujinawa; Katsuyuki Noguchi; Akihiko Kuze; Andreas Richter; John P. Burrows; Andreas C. Meier; Tomohiro O. Sato; Takeshi Kuroda; Naohiro Yoshida; Yasko Kasai

    © 2019 IAA Satellite observations at nadir can potentially facilitate a better understanding of the emissions and distribution of tropospheric nitrogen dioxide, NO2, which is a well-known pollutant. The identification of emissions requires adequate spatiotemporal resolution measurements of the total column amounts of NO2. The spatial resolution of previous and current observations is insufficient for the identification of NO2 hot-spots. Switching to a spatial resolution of ∼ 1 km × ∼ 1 km can improve the identification of local sources of NO2 and their emissions. To investigate the feasibility of observations with such a high spatial resolution, we simulated radiance spectra for different cases under varying parameters, such as area, season, satellite altitude, and surface reflectance by using the radiative transfer model SCIATRAN. We subsequently retrieved NO2 slant column densities (SCDs)using the differential optical absorption spectroscopy (DOAS)technique with several fit windows. For test cases associated with polluted conditions, we found that the conceptual nadir-observing instrument on a satellite at an altitude of ∼ 300 km involved the lowest retrieval errors for signal-to-noise ratios of around 1000 with accuracy better than the required 5% for tropospheric NO2 SCD and that the fit window of 425–497 nm met the scientific requirements for both surface reflectance cases., Jul. 2019, Acta Astronautica, 160, 421 - 432, doi;scopus;scopus_citedby

    Scientific journal

  • Local Time Dependence of the Thermal Structure in the Venusian Equatorial Upper Atmosphere: Comparison of Akatsuki Radio Occultation Measurements and GCM Results

    Hiroki Ando; Masahiro Takagi; Tetsuya Fukuhara; Takeshi Imamura; Norihiko Sugimoto; Hideo Sagawa; Katsuyuki Noguchi; Silvia Tellmann; Martin Pätzold; Bernd Häusler; Yasuhiro Murata; Hiroshi Takeuchi; Atsushi Yamazaki; Tomoaki Toda; Atsushi Tomiki; Rajkumar Choudhary; Kishore Kumar; Geetha Ramkumar; Maria Antonita

    ©2018. American Geophysical Union. All Rights Reserved. Temperature profiles of the Venus atmosphere obtained by the Akatsuki radio occultation measurements showed a prominent local time dependence above 65-km altitude at low latitudes equatorward of 35°. A zonal wavenumber 2 component is predominant in the temperature field, and its phase (i.e., isothermal) surfaces descend with local time, suggesting its downward phase propagation. A general circulation model (GCM) for the Venus atmosphere, AFES-Venus, reproduced the local time-dependent thermal structure qualitatively consistent with the radio occultation measurements. Based on a comparison between the radio occultation measurements and the GCM results, the observed zonal wavenumber 2 structure is attributed to the semidiurnal tide. Applying the dispersion relationship for internal gravity waves to the observed wave structure, the zonally averaged zonal wind speed at 75- to 85-km altitudes was found to be significantly smaller than that at the cloud top. The decrease of the zonal wind speed with altitude is attributed to the momentum deposition by the upwardly propagating semidiurnal tide excited in the cloud layer., Sep. 2018, Journal of Geophysical Research: Planets, 123 (9), 2270 - 2280, doi;scopus;scopus_citedby

    Scientific journal

  • Properties of the turbulence of the solar wind from radio-eclipse experiments with the NOZOMI spacecraft

    Efimov, I; T. Imamura; K.-I. Oyama; K. Noguchi; L. N. Samoznaev; A. S. Nabatov; M. K. Bird; I. V. Chashei

    2010, Astronomy Reports, 54, 1031 - 1041

    Scientific journal

  • Development of an interactive visual data mining system for atmospheric science

    Chiemi Watanabe; Eriko Touma; Kazuko Yamauchi; Katsuyuki Noguchi; Sachiko Hayashida; Kazuki Joe

    In atmospheric science, 3D visualization techniques have been mainly used to create impressive presentation in recent decades. However, from the viewpoint of utilize for visual data mining, 3D visualization methodology has difficulties in becoming wide spread because most conventional and established way is to make 2D diagrams consisting of two dimensions of a temporal transitional 3D grid. From these observations, we have been developing a quick look tool of atmospheric science data for 3d visual data mining. We expect that scientists can utilize this tool for finding out 2D diagrams from the data by using various 2D or 3D visualization methods, and become accustomed themselves to 3D visualization methods., SPRINGER-VERLAG BERLIN, 2008, HIGH-PERFORMANCE COMPUTING, 4759, 279 - +, web_of_science

    International conference proceedings

  • A global statistical study on the origin of small-scale ozone vertical structures in the lower stratosphere

    K. Noguchi; T. Imamura; K. I. Oyama; G. E. Bodeker

    We investigated meridional and seasonal variations in small-vertical-scale (wavelengths 0.5-3 km) fluctuations of the ozone mixing ratio in the lower stratosphere using ozonesonde data covering wide longitudinal and latitudinal regions in all seasons. The generation of mixing ratio fluctuation is attributed to vertical advection and/or horizontal advection the former was estimated from the potential temperature fluctuation and the vertical gradient of background mixing ratio, while the latter was obtained by subtracting the vertical advection component from the observed value. The results show that horizontal advection is always the major source of the mixing ratio fluctuation above the potential temperature of 700 K (∼27 km altitude). Below 700 K, the source of the mixing ratio fluctuation depends on latitude horizontal advection governs the mixing ratio fluctuations at high latitudes, vertical advection dominates at low latitudes, and horizontal advection is relatively dominant in winter-spring, while vertical advection is dominant in summer-autumn in the midlatitudes. These tendencies were confirmed by analyzing the correlation between the small-scale structures of the mixing ratio and the potential temperature. The synthetic distribution of the horizontal advection activity due to synoptic-scale motions calculated from assimilated meteorological data reproduced the seasonal, meridional, and altitudinal tendencies of the observed small-scale fluctuations, suggesting the major contribution of differential advection via large-scale winds. Copyright 2006 by the American Geophysical Union., Blackwell Publishing Ltd, 16 Dec. 2006, Journal of Geophysical Research Atmospheres, 111 (23), doi

    Scientific journal

  • Initial performance of the radio occultation experiment in the Venus orbiter mission Akatsuki Akatsuki at Venus: The First Year of Scientific Operation Masato Nakamura, Dmitri Titov, Kevin McGouldrick, Pierre Drossart, Jean-Loup Bertaux and Huixin Liu 7.

    Takeshi Imamura; Hiroki Ando; Silvia Tellmann; Martin; Pätzold, Ber; Häusler; Atsushi Yamazaki; Takao M. Sato; Katsuyuki Noguchi; Yoshifumi Futaana; Janusz Oschlisniok; Sanjay Limaye; R. K. Choudhary; Yasuhiro Murata; Hiroshi Takeuchi; Chikako Hirose; Tsutomu Ichikawa; Tomoaki Toda; Atsushi Tomiki; Takumi Abe; Zen Ichi Yamamoto; Hirotomo Noda; Takahiro Iwata; Shin Ya Murakami; Takehiko Satoh; Tetsuya Fukuhara; Kazunori Ogohara; Ko Ichiro Sugiyama; Hiroki Kashimura; Shoko Ohtsuki; Seiko Takagi; Yukio Yamamoto; Naru Hirata; George L. Hashimoto; Manabu Yamada; Makoto Suzuki; Nobuaki Ishii; Tomoko Hayashiyama; Yeon Joo Lee; Masato Nakamura

    © 2017 The Author(s). After the arrival of Akatsuki spacecraft of Japan Aerospace Exploration Agency at Venus in December 2015, the radio occultation experiment, termed RS (Radio Science), obtained 19 vertical profiles of the Venusian atmosphere by April 2017. An onboard ultra-stable oscillator is used to generate stable X-band downlink signals needed for the experiment. The quantities to be retrieved are the atmospheric pressure, the temperature, the sulfuric acid vapor mixing ratio, and the electron density. Temperature profiles were successfully obtained down to ~ 38 km altitude and show distinct atmospheric structures depending on the altitude. The overall structure is close to the previous observations, suggesting a remarkable stability of the thermal structure. Local time-dependent features are seen within and above the clouds, which is located around 48-70 km altitude. The H2SO4vapor density roughly follows the saturation curve at cloud heights, suggesting equilibrium with cloud particles. The ionospheric electron density profiles are also successfully retrieved, showing distinct local time dependence. Akatsuki RS mainly probes the low and middle latitude regions thanks to the near-equatorial orbit in contrast to the previous radio occultation experiments using polar orbiters. Studies based on combined analyses of RS and optical imaging data are ongoing.[Figure not available: see fulltext.], 01 Dec. 2017, Earth, Planets and Space, 69, doi;url

  • A method of visualization of three-dimensional data by "gnuplot"

    NOGUCHI Katsuyuki

    2016, Journal of Space Science Informatics Japan, 5, 123 - 131

  • On Global Methane Observation from Space by SCIAMACHY

    NOGUCHI Katsuyuki; Ariyama, Y; S. Etoh; K. Noguchi; S. Hayashida

    2009, Tenki, 56 (8), 603 - 611

  • Application of the GPS network to estimate the effect of the terrestrial ionosphere on the radio occultation measurements of planetary ionospheres (vol 36, pg 1607, 2001)

    K Noguchi; T Imamura; KI Oyama; A Saito

    AMER GEOPHYSICAL UNION, Dec. 2002, RADIO SCIENCE, 37 (6), doi;web_of_science

  • Generation of gravity waves from thermal tides in the Venus atmosphere

    Norihiko Sugimoto; Yukiko Fujisawa; Hiroki Kashimura; Katsuyuki Noguchi; Takeshi Kuroda; Masahiro Takagi; Yoshi-Yuki Hayashi

    AbstractGravity waves play essential roles in the terrestrial atmosphere because they propagate far from source regions and transport momentum and energy globally. Gravity waves are also observed in the Venus atmosphere, but their characteristics have been poorly understood. Here we demonstrate activities of small-scale gravity waves using a high-resolution Venus general circulation model with less than 20 and 0.25 km in the horizontal and vertical grid intervals, respectively. We find spontaneous gravity wave radiation from nearly balanced flows. In the upper cloud layer (~70 km), the thermal tides in the super-rotation are primary sources of small-scale gravity waves in the low-latitudes. Baroclinic/barotropic waves are also essential sources in the mid- and high-latitudes. The small-scale gravity waves affect the three-dimensional structure of the super-rotation and contribute to material mixing through their breaking processes. They propagate vertically and transport momentum globally, which decelerates the super-rotation in the upper cloud layer (~70 km) and accelerates it above ~80 km., Springer Science and Business Media LLC, Jun. 2021, Nature Communications, 12 (3682), doi;url;url

    Scientific journal

MISC

  • 第287回生存圏シンポジウム「電波を用いた観測が切り拓く地球および惑星大気科学」開催報告

    野口 克行

    2015, 日本惑星科学会誌, 24 (3), 292 - 293

    Meeting report

  • 成層圏の微細な流れを探る〜オゾンの薄層構造の研究

    野口 克行

    2005, 大気化学研究会ニュースレター, 13, 4 - 6

    Introduction other

  • Climatology and origin of small-scale vertical structures in stratospheric ozone

    NOGUCHI Katsuyuki

    2004, ISAS Research Note, 775

    Report research institution

  • A Feasibility Study for Observing Small Lunar and Martian Ionospheres by Radio Occultation Technique

    NOGUCHI Katsuyuki; Noguchi, K; T. Imamura; K.-I. Oyama

    2000, The Institute of Space and Astronautical Science Report, 678

    Report research institution

  • スペクトル取得型光学オゾンゾンデ観測からの成層圏オゾン、二酸化窒素高度分布導出

    村田 功; 野口 克行; dreas Richter; Alexei Rozanov; John; P. Burrows

    筆頭, Nov. 2017, 平成29年度大気球シンポジウム集録, isas17-sbs-005, url

    Introduction research institution

  • スペクトル取得型光学オゾンゾンデによる成層圏オゾン、二酸化窒素の観測

    村田 功; 野口 克行; dreas Richter; Alexei Rozanov; John; P. Burrows

    筆頭, Oct. 2017, 第23回大気化学討論会講演要旨集, 38 - 38

    Introduction research institution

Presentations

  • 探査機リモートセンシングデータを用いた火星大気環境の研究

    第20回環境リモートセンシングシンポジウム, 2018

  • CO2 SUPERSATURATION BY ATMOSPHERIC WAVES IN THE MARTIAN POLAR NIGHTS

    the 6th International Workshop on the Mars Atmosphere: Modelling and Observations, 2017

  • 探査機リモートセンシングデータを用いた火星大気環境の研究

    第19回環境リモートセンシングシンポジウム, 2017

  • 4D Gridding of MRO-MCS Data for Easier Analysis and Visualization

    Asia Oceania Geosciences Society (AOGS) 14th Annual Meeting, 2017

  • Feasibility Study for the Observation for NO2 Air Pollution Using High Spatial Resolution Mini-satellites

    The 8th International DOAS Workshop, 2017

  • Measurements of stratospheric ozone and nitrogen dioxide with spectrometer type balloon-borne optical ozone sensor

    The 8th International DOAS Workshop, 2017

  • Atmospheric CO2 supersaturation in the Martian polar nights: Role of large-scale atmospheric waves

    European Planetary Science Congress (EPSC) 2017, 2017

  • Initial results of the radio occultation experiment in the Venus orbiter mission Akatsuki

    European Planetary Science Congress (EPSC) 2017, 2017

  • スペクトル取得型光学オゾンゾンデによる成層圏オゾン、二酸化窒素の観測

    第23回大気化学討論会, 2017

  • 火星大気熱赤外センサデータの4次元格子化による解析と可視化の環境整備

    第142回地球電磁気・地球惑星圏学会総会・講演会, 2017

  • 火星極夜でのCO2過飽和に対する大気波動の影響

    第142回地球電磁気・地球惑星圏学会総会・講演会, 2017

  • あかつき電波掩蔽観測の初期成果

    第142回地球電磁気・地球惑星圏学会総会・講演会, 2017

  • あかつき電波掩蔽観測の初期成果

    日本気象学会2017年度秋季大会, 2017

  • 火星極夜での大気CO2過飽和に対する大気波動の影響

    日本気象学会2017年度秋季大会, 2017

  • CO2 SUPERSATURATION BY ATMOSPHERIC WAVES IN THE MARTIAN POLAR NIGHTS

    the 6th International Workshop on the Mars Atmosphere: Modelling and Observations, 2017

  • 4D Gridding of MRO-MCS Data for Easier Analysis and Visualization

    Asia Oceania Geosciences Society (AOGS) 14th Annual Meeting, 2017

  • Feasibility Study for the Observation for NO2 Air Pollution Using High Spatial Resolution Mini-satellites

    The 8th International DOAS Workshop, 2017

  • Measurements of stratospheric ozone and nitrogen dioxide with spectrometer type balloon-borne optical ozone sensor

    The 8th International DOAS Workshop, 2017

  • Atmospheric CO2 supersaturation in the Martian polar nights: Role of large-scale atmospheric waves

    European Planetary Science Congress (EPSC) 2017, 2017

  • Initial results of the radio occultation experiment in the Venus orbiter mission Akatsuki

    European Planetary Science Congress (EPSC) 2017, 2017

  • 火星大気におけるCO2過飽和に対する大気波動の役割

    第29回大気圏シンポジウム, 2016

  • 火星大気北半球冬季におけるCO2過飽和の経度依存性

    日本地球惑星科学連合2016年大会, 2016

  • Atmospheric CO2 supersaturation observed in the Martian polar nights

    Sixth International Conference on Mars Polar Science and Exploration, 2016

  • A concept of mini-satellite of air quality observation -a possibility after the GEMS satellite-

    the 6th Geostationary Environmental Monitoring Spectrometer Science Team Meeting (GEMS-STM-6), 2016

  • 改良されたスペクトル取得型光学オゾンゾンデによる成層圏オゾン、二酸化窒素の観測

    大気球シンポジウム, 2016

  • 火星大気におけるCO2過飽和に対する定常波と非定常波の役割

    第30回大気圏シンポジウム, 2016

  • 電波掩蔽観測データを用いた火星大気極夜のCO2過飽和現象に関する研究

    宇宙物理学・気象セミナー, 2016

  • 探査機データを用いた惑星大気の研究

    2016年度数学・物理・情報科学の研究交流シンポジウム, 2016

  • Longitudinal dependence of CO2 supersaturation during northern winter in the Martian atmosphere

    Japan Geoscience Union Meeting 2016, 2016

  • Atmospheric CO2 supersaturation observed in the Martian polar nights

    Sixth International Conference on Mars Polar Science and Exploration, 2016

  • A concept of mini-satellite of air quality observation -a possibility after the GEMS satellite-

    the 6th Geostationary Environmental Monitoring Spectrometer Science Team Meeting (GEMS-STM-6), 2016

  • 着陸機による火星ダストおよび関連現象の観測

    宇宙科学シンポジウム, 2015

  • 教育用計算機の利用を想定した3次元データコンター図の簡便なプロット手法の提案

    宇宙科学情報解析シンポジウム, 2015

  • 火星ダスト類似エアロゾルの物理・光学特性測定

    第17回環境リモートセンシングシンポジウム, 2015

  • 対流圏オゾンおよび微量成分観測における短波長域地表面アルベドの影響評価

    第17回環境リモートセンシングシンポジウム, 2015

  • 人工衛星による大気汚染物質濃度監視の精度向上

    第40回岩谷科学技術研究助成金 研究成果発表会, 2015

  • タイタンにおける生命存在の可能性-アセチレンを用いた代謝経路を持つ微生物の生存条件

    日本地球惑星科学連合2015年大会, 2015

  • 火星探査機MRO搭載MCSにより観測された火星大気ダスト、水氷雲および気温の経度分布の複数年解析

    日本地球惑星科学連合2015年大会, 2015

  • 電波掩蔽観測による火星大気主成分CO2の凝結に関する研究

    第287回生存圏シンポジウム「電波を用いた観測が切り拓く地球および惑星大気科学」, 2015

  • 多波長カメラを用いた火星ダスト特性・水蒸気カラム量の測定

    日本リモートセンシング学会第58回(平成27年度春季)学術講演会, 2015

  • 高時間分解能観測がひらく火星ダスト・水循環の科学

    第6回CPS月惑星探査研究会・大学共同利用連携拠点キックオフワークショップ, 2015

  • 火星衛星サンプルリターン機による火星大気観測の可能性

    第138回地球電磁気・地球惑星圏学会総会および講演会, 2015

  • MRO-MCSデータを利用した火星大気のダスト、気温、水氷雲の間に見られる関係の解析

    第138回地球電磁気・地球惑星圏学会総会および講演会, 2015

  • 二酸化窒素観測に向けたスペクトル取得型光学オゾンゾンデの改良

    大気球シンポジウム, 2015

  • A study on the relationships among water ice clouds, dust and temperature in the Martian atmosphere by using MRO-MCS data

    2nd COSPAR Symposium, 2015

  • A study on the Martian atmospheric environment using remote sensing data obtained by Mars orbiter missions

    The 23rd CEReS International Symposium, 2015

  • New numerical model on the radiative field of Martian atmosphere and strategy of radiative field observation in Mars landing mission in the future

    The 23rd CEReS International Symposium, 2015

  • The possibilities for life on Titan - the constraints for methanogenic bacteria with acetylene-based metabolic pathways

    Japan Geoscience Union Meeting 2015, 2015

  • Interannual analyses of the longitudinal distributions of Martian water ice clouds, dust and temperature by MRO-MCS

    Japan Geoscience Union Meeting 2015, 2015

  • A study on the CO2 condensation in the Martian atmosphere by radio occultation

    Radio Science Symposium on Earth and Planetary Atmospheres, 2015

  • A study on the relationships among water ice clouds, dust and temperature in the Martian atmosphere by using MRO-MCS data

    2nd COSPAR Symposium, 2015

  • A study on the Martian atmospheric environment using remote sensing data obtained by Mars orbiter missions

    The 23rd CEReS International Symposium, 2015

  • New numerical model on the radiative field of Martian atmosphere and strategy of radiative field observation in Mars landing mission in the future

    The 23rd CEReS International Symposium, 2015

  • 可視紫外波長域を用いた対流圏微量成分観測における土地被覆分類データの応用

    第16回環境リモートセンシングシンポジウム, 2014

  • 静止衛星及び低軌道衛星による対流圏NO2観測を想定した地表面BRDFの影響に関する研究

    日本地球惑星科学連合2014年大会, 2014

  • 火星探査機MRO搭載MCSにより観測された火星大気ダストと水氷雲の子午面分布の複数年解析

    日本地球惑星科学連合2014年大会, 2014

  • 火星の大気主成分凝結を考慮したMGS電波掩蔽観測データの再導出とその応用

    日本地球惑星科学連合2014年大会, 2014

  • 火星探査 MELOS 計画のためのエアロゾル・水蒸気観測用環境監視カメラの提案

    日本地球惑星科学連合2014年大会, 2014

  • Rederivation of MGS radio occultation measurements in the polar nights region in consideration of CO2 condensation

    Mars Express MaRS / Venus Express VeRa / Rosetta RSI Radio Science Team Meeting, 2014

  • Proposal of the Environment Camera System Monitoring the Martian Aerosols and Water Vapor Column Density for the Japanese Mars Rover Proposal for MELOS Program

    Asia Oceania Geosciences Society (AOGS) 11th Annual Meeting, 2014

  • Effect of Atmospheric Waves on CO2 Saturation in the Martian Atmosphere

    Asia Oceania Geosciences Society (AOGS) 11th Annual Meeting, 2014

  • A Sensitivity Study of UV Surface Albedo for Spaceborne Tropospheric Ozone Measurements Over China

    Asia Oceania Geosciences Society (AOGS) 11th Annual Meeting, 2014

  • 火星大気CO2凝結を考慮した電波掩蔽観測データの再導出

    日本気象学会2014年度秋季大会, 2014

  • 静止衛星を用いた対流圏NO2観測における地表面BRDFの影響 -鉛直気柱量の評価-

    日本気象学会2014年度秋季大会, 2014

  • 大気組成の鉛直分布を考慮したMGS電波掩蔽観測データの気温再導出

    第136回地球電磁気・地球惑星圏学会講演会, 2014

  • Intercomparison of radiative transfer models for atmospheric composition measurements

    第136回地球電磁気・地球惑星圏学会講演会, 2014

  • 多成分観測用スペクトル取得型光学オゾンゾンデの開発

    大気球シンポジウム, 2014

  • スペクトル取得型光学オゾンゾンデによる成層圏オゾン高度分布観測

    第5回極域科学シンポジウム, 2014

  • 火星大気CO2凝結を考慮した電波掩蔽観測データの再導出

    第28回大気圏シンポジウム, 2014

  • 対流圏オゾンおよび微量成分観測における短波長域地表面アルベドの影響評価

    第28回大気圏シンポジウム, 2014

  • Interannual analyses of the meridional distributions of Martian dust and clouds obtained by MRO-MCS

    Japan Geoscience Union meeting 2014, 2014

  • Estimation of Martian atmospheric composition change caused by CO2 condensation and its application to radio occultation

    Japan Geoscience Union meeting 2014, 2014

  • Environmental monitoring camera system for the Martian aerosols and water vapor for the Japanese Mars rover, MELOS

    Japan Geoscience Union meeting 2014, 2014

  • Rederivation of MGS radio occultation measurements in the polar nights region in consideration of CO2 condensation

    Mars Express MaRS / Venus Express VeRa / Rosetta RSI Radio Science Team Meeting, 2014

  • Proposal of the Environment Camera System Monitoring the Martian Aerosols and Water Vapor Column Density for the Japanese Mars Rover Proposal for MELOS Program

    Asia Oceania Geosciences Society (AOGS) 11th Annual Meeting, 2014

  • Effect of Atmospheric Waves on CO2 Saturation in the Martian Atmosphere

    Asia Oceania Geosciences Society (AOGS) 11th Annual Meeting, 2014

  • A Sensitivity Study of UV Surface Albedo for Spaceborne Tropospheric Ozone Measurements Over China

    Asia Oceania Geosciences Society (AOGS) 11th Annual Meeting, 2014

  • Intercomparison of radiative transfer models for atmospheric composition measurements

    2014

  • 静止衛星・国際宇宙ステーション搭載紫外可視センサによる対流圏二酸化窒素の日内変動導出の検討

    第15回CEReS共同利用研究発表会, 2013

  • 衛星からのUV・Vis同 時分光観測による下部対流圏オゾン量導出シミュレーション~エアロゾル推定誤差が与えるAMF計算への影響~

    第15回CEReS共同利用研究発表会, 2013

  • リモートセンシングによる下部対流圏オゾン導出 ~アルベド推定~

    第15回CEReS共同利用研究発表会, 2013

  • MGS電波掩蔽観測による火星大気CO2凝結に関する研究~大気成分の変動に着目して

    第27回大気圏シンポジウム, 2013

  • 静止衛星及び低軌道衛星による大気観測に向けた地表面BRDF(二方向反射率分布関数)の影響評価~エアマスファクターによる検討

    第27回大気圏シンポジウム, 2013

  • 多波長観測による対流圏オゾンの導出手法と感度研究

    第27回大気圏シンポジウム, 2013

  • リモートセンシングによる下部対流圏オゾン量導出のための検証観測

    日本気象学会2013年度春季大会, 2013

  • 衛星からのUV・Vis同 時分光観測による下部対流圏オゾン量導出シミュレーション

    日本気象学会2013年度春季大会, 2013

  • 衛星からのUV・Vis同 時分光観測による下部対流圏オゾン量導出シミュレーション~エアロゾルによる影響

    日本地球惑星科学連合2013年大会, 2013

  • 紫外・熱赤外・マイクロ波を用いた対流圏オゾンのシナジーリトリーバルに関する研究

    日本地球惑星科学連合2013年大会, 2013

  • リモートセンシングによる下部対流圏オゾン導出~地表面アルベド推定

    日本地球惑星科学連合2013年大会, 2013

  • リモートセンシングによる下部対流圏オゾン量導出のための検証観測

    日本地球惑星科学連合2013年大会, 2013

  • JUICE/SWIミッション

    日本地球惑星科学連合2013年大会, 2013

  • Current Status of Air Quality Missions in Japan: APOLLO and GMAP-Asia

    Asia Oceania Geosciences Society (AOGS) Annual Meeting, 2013

  • The Effect of Surface BRDF of Various Land Cover Types on the Measurement of Tropospheric NO2 from a Geostationary Orbit

    Asia Oceania Geosciences Society (AOGS) Annual Meeting, 2013

  • Simulation study of synergetic retrieval for tropospheric ozone with UV, TIR, and MW measurements

    Asia Oceania Geosciences Society (AOGS) Annual Meeting, 2013

  • 火星のダストと雲に関するレビュー

    第57回惑星大気研究会オンラインセミナー, 2013

  • MELOS1ローバー搭載ナビゲーションカメラを用いた火星気象観測

    第46回月・惑星シンポジウム, 2013

  • MELOS1ローバー搭載用環境監視カメラの提案

    地球電磁気・地球惑星圏学会第134回講演会, 2013

  • MELOS-1火星表面ローバーへの環境監視カメラ提案

    第39回リモートセンシングシンポジウム, 2013

  • Current Status of Air Quality Missions in Japan: APOLLO and GMAP-Asia

    Asia Oceania Geosciences Society (AOGS) Annual Meeting, 2013

  • The Effect of Surface BRDF of Various Land Cover Types on the Measurement of Tropospheric NO2 from a Geostationary Orbit

    Asia Oceania Geosciences Society (AOGS) Annual Meeting, 2013

  • Simulation study of synergetic retrieval for tropospheric ozone with UV, TIR, and MW measurements

    Asia Oceania Geosciences Society (AOGS) Annual Meeting, 2013

  • 静止衛星及びAPOLLO 観測に向けた地表面BRDF(二方向反射率分布関数)の影響評価

    第26回大気圏シンポジウム, 2012

  • Current status of discussion on the UV/Visible instrumentation and preliminary feasibility study

    APOLLO team meeting, 2012

  • 静止軌道およびISSによる対流圏NO2観測における地表面BRDFの影響

    日本地球惑星科学連合2012年度大会, 2012

  • Statistical analysis of CO2 supersaturation in the Martian atmosphere observed by MGS radio occultation measurements

    European Planetary Science Congress (EPSC) 2012, 2012

  • 国際宇宙ステーションからの大気環境観測ミッションAPOLLO提案

    日本気象学会2012年度秋季大会, 2012

  • スペクトル取得型光学オゾンゾンデによる成層圏オゾン観測の検証

    平成24年度大気球シンポジウム, 2012

  • The effect of the surface BRDF on the measurement of tropospheric NO2 from ageostationary orbit and ISS: evaluation of AMF

    地球電磁気・地球惑星圏学会第132回総会及び講演会, 2012

  • CO2 supersaturation observed in the Martian atmosphere with the MGS radio occultation measurements

    地球電磁気・地球惑星圏学会第132回総会及び講演会, 2012

  • MGS電波掩蔽観測データを用いた火星大気CO2の過飽和現象に関する研究

    日本惑星科学会2013年度秋季講演会, 2012

  • Basic study of BRDF over Tokyo for the spaceborne measurements of atmospheric trace gases

    Land Surface Remote Sensing conference in SPIE Asia-Pacific Remote Sensing, 2012

  • リモートセンシングによる下部対流圏オゾン導出の試み~航空機からの検証実験

    第18回大気化学討論会, 2012

  • 大気汚染と気候変動ミッションAPOLLOによる対流圏オゾンのシナジー解析手法の検討

    第18回大気化学討論会, 2012

  • CO2 supersaturation observed in the Martian lower atmosphere with Mars orbiters

    American Geophysical Union (AGU) Fall Meeting 2012, 2012

  • Current status of discussion on the UV/Visible instrumentation and preliminary feasibility study

    APOLLO team meeting, 2012

  • The effect of the surface BRDF on the measurement of tropospheric NO2 from a geostationary orbit and ISS

    Japan Geoscience Union Meeting 2012, 2012

  • Statistical analysis of CO2 supersaturation in the Martian atmosphere observed by MGS radio occultation measurements

    European Planetary Science Congress (EPSC) 2012, 2012

  • The effect of the surface BRDF on the measurement of tropospheric NO2 from ageostationary orbit and ISS: evaluation of AMF

    2012

  • CO2 supersaturation observed in the Martian atmosphere with the MGS radio occultation measurements

    2012

  • Basic study of BRDF over Tokyo for the spaceborne measurements of atmospheric trace gases

    Land Surface Remote Sensing conference in SPIE Asia-Pacific Remote Sensing, 2012

  • CO2 supersaturation observed in the Martian lower atmosphere with Mars orbiters

    American Geophysical Union (AGU) Fall Meeting 2012, 2012

  • 人工衛星による対流圏NO2の観測

    第25回大気圏シンポジウム, 2011

  • 人工衛星により観測された中国大陸からの対流圏二酸化窒素輸送の事例解析

    日本地球惑星科学連合2011年大会, 2011

  • The effect of the surface BRDF on the measurement of tropospheric NO2 from a geostationary orbit

    The 5th International DOAS Workshop, 2011

  • Quantifying the relationship between the measurement precision and specifications of a UV/visible sensor on a geostationary satellite

    The 5th International DOAS Workshop, 2011

  • A feasibility study for GMAP-Asia and APOLLO UV-visible observations and its implications for GEMS

    GEMS workshop, 2011

  • A case study of the transport of tropospheric nitrogen dioxide from China observed from space

    Japan Geoscience Union Meeting 2011, 2011

  • The effect of the surface BRDF on the measurement of tropospheric NO2 from a geostationary orbit

    The 5th International DOAS Workshop, 2011

  • Quantifying the relationship between the measurement precision and specifications of a UV/visible sensor on a geostationary satellite

    The 5th International DOAS Workshop, 2011

  • A feasibility study for GMAP-Asia and APOLLO UV-visible observations and its implications for GEMS

    GEMS workshop, 2011

  • A feasibility study for the monitoring of diurnal variations of the tropospheric NO2 over Tokyo from a geostationary satellite

    European Geosciences Union (EGU) General Assembly 2010, 2010

  • A simulation for UV-VIS observations of tropospheric composition from a geostationary satellite over Asia

    38th COSPAR Scientific Assembly, 2010

  • A feasibility study for the monitoring of diurnal variations of the tropospheric NO2 over Tokyo from a geostationary satellite

    38th COSPAR Scientific Assembly, 2010

  • A simulation for UV-VIS observations of tropospheric composition from a geostationary satellite over Asia

    International GEMS Workshop: Requirements on Science and Instrument, 2010

  • 静止衛星を用いた大気汚染観測の将来計画

    2010年日本地球化学会第57回大会, 2010

  • A simulation for UV-VIS observations of tropospheric composition from a geostationary satellite over Asia

    The Korea/Japan collaborative meeting, 2010

  • A feasibility study for the monitoring of diurnal variations of the tropospheric NO2 over Tokyo from a geostationary satellite

    American Geophysical Union (AGU) Fall Meeting 2010, 2010

  • A feasibility study for the monitoring of diurnal variations of the tropospheric NO2 over Tokyo from a geostationary satellite

    European Geosciences Union (EGU) General Assembly 2010, 2010

  • A simulation for UV-VIS observations of tropospheric composition from a geostationary satellite over Asia

    38th COSPAR Scientific Assembly, 2010

  • A feasibility study for the monitoring of diurnal variations of the tropospheric NO2 over Tokyo from a geostationary satellite

    38th COSPAR Scientific Assembly, 2010

  • A simulation for UV-VIS observations of tropospheric composition from a geostationary satellite over Asia

    International GEMS Workshop: Requirements on Science and Instrument, 2010

  • A simulation for UV-VIS observations of tropospheric composition from a geostationary satellite over Asia

    The Korea/Japan collaborative meeting, 2010

  • A feasibility study for the monitoring of diurnal variations of the tropospheric NO2 over Tokyo from a geostationary satellite

    American Geophysical Union (AGU) Fall Meeting 2010, 2010

  • Comparison of tropospheric NO2 observations by GOME and ground stations over Tokyo, Japan

    European Geosciences Union (EGU) General Assembly 2009, 2009

  • Intercomparison of tropospheric NO2 concentration by GOME and the air-quality monitoring network in the Tokyo region, Japan

    2009 American Geophysical Union (AGU) Fall Meeting, 2009

  • Comparison of tropospheric NO2 observations by GOME and ground stations over Tokyo, Japan

    European Geosciences Union (EGU) General Assembly 2009, 2009

  • Intercomparison of tropospheric NO2 concentration by GOME and the air-quality monitoring network in the Tokyo region, Japan

    2009 American Geophysical Union (AGU) Fall Meeting, 2009

  • GOME/SCIAMACHY/OMIで観測された東アジア域における二酸化窒素の時空間分布

    第4回ゼヒュロスの会(対流圏微量成分衛星解析研究会), 2008

  • GOMEで観測された東アジア域対流圏オゾンの季節変動について

    第4回ゼヒュロスの会(対流圏微量成分衛星解析研究会), 2008

  • SCIAMACHY観測によるメタンデータの検証とアジアの水田からのメタン放出について

    第4回ゼヒュロスの会(対流圏微量成分衛星解析研究会), 2008

  • オゾンゾンデで観測された空気塊の起源と対流圏オゾンの季節変化の対応

    第4回ゼヒュロスの会(対流圏微量成分衛星解析研究会), 2008

  • 衛星観測データによる水田から放出されるメタンについての解析

    日本地球惑星科学連合2008年大会, 2008

  • Comparison of tropospheric NO2 from GOME and surface measurements in the Tokyo region, Japan

    IGAC 10th International Conference, 2008

  • オゾンゾンデと衛星観測から得られた対流圏オゾンの解析ー高度分布に着目した解析ー

    第14回大気化学討論会, 2008

  • OMIで観測されたNO2気柱量のパターンの変形について

    第14回大気化学討論会, 2008

  • OMI観測による対流圏NO2気柱量と大気環境常時監視測定による地表NO2混合比の比較

    第14回大気化学討論会, 2008

  • Comparison of tropospheric NO2 from GOME and surface measurements in the Tokyo region, Japan

    IGAC 10th International Conference, 2008

  • 3D Visualization System Gateau for Atmospheric Science: Design Concept and Practical Evaluation

    NOGUCHI Katsuyuki; Touma, E; K. Noguchi; M. Takata; H. Kamo; N. Nide; K. Joe

    The 2007 International Conference on Parallel and Distributed Processing Techniques and Applications, 2007

  • SCIAMACHYセンサによるメタンデータと地上観測データの比較解析

    第17回大気化学シンポジウム, 2007

  • Comparison between GOME and surface measurements of tropospheric NO2 over Japan

    European Geosciences Union (EGU) General Assembly 2007, 2007

  • SCIAMACHYセンサによるメタンデータと航空機観測・地上観測データの比較解析

    日本地球惑星科学連合2007年大会, 2007

  • Comparison between tropospheric NO2 vertical columns by GOME and surface NO2 mixing ratio by the air-monitoring network over Japan

    Tropospheric NO2 measured by satellites (ACCENT/TROPOSAT-2 workshop), 2007

  • オゾンゾンデ観測から得られた対流圏オゾンの解析ー空気塊分類に基づく解析結果ー

    日本気象学会2007年度秋季大会, 2007

  • 流跡線解析ツールSPIRALの開発と対流圏オゾン解析への応用

    日本気象学会2007年度秋季大会, 2007

  • OMIセンサで得られた対流圏NO2気柱量の初期解析結果

    日本気象学会2007年度秋季大会, 2007

  • 人工衛星による対流圏NO2観測と大気環境常時環視局による地表NO2観測との比較

    日本気象学会2007年度秋季大会, 2007

  • 東アジア域に着目した対流圏オゾンの解析 1.空気塊分類によるオゾンゾンデデータの解析

    第13回大気化学討論会, 2007

  • 東アジアに着目した対流圏オゾンの解析 2.衛星観測から得られた季節変化

    第13回大気化学討論会, 2007

  • Comparison between GOME and surface measurements of tropospheric NO2 over Japan

    European Geosciences Union (EGU) General Assembly 2007, 2007

  • Comparison between tropospheric NO2 vertical columns by GOME and surface NO2 mixing ratio by the air-monitoring network over Japan

    Tropospheric NO2 measured by satellites (ACCENT/TROPOSAT-2 workshop), 2007

  • 東アジア域の汚染源からの輸送に着目した対流圏NO2分布の解析

    第16回大気化学シンポジウム, 2006

  • GOMEセンサーで得られた対流圏オゾンの検証と初期解析結果

    第16回大気化学シンポジウム, 2006

  • 衛星観測から得られた対流圏オゾンデータの検証と短期変動解析

    地球惑星科学連合2006年大会, 2006

  • 南極成層圏で観測されたNAT粒子の気温履歴について

    地球惑星科学連合2006年大会, 2006

  • GOME/SCIAMACHYで観測された対流圏NO2とオゾン

    第3回ゼヒュロスの会(対流圏微量成分衛星解析研究会), 2006

  • 衛星観測データと化学気候モデルを用いた東アジア域からの窒素酸化物の長距離輸送の事例解析

    日本気象学会秋季大会, 2006

  • 衛星及び地表観測で得られた日本におけるNO2季節変化の数値モデルによる比較

    日本気象学会秋季大会, 2006

  • ILAS ver. 7を用いた極成層圏雲の組成解析

    地球惑星科学関連学会2005年合同大会, 2005

  • 衛星観測から得られた対流圏オゾンデータの初期解析結果について

    第11回大気化学討論会, 2005

  • 地球惑星科学研究支援のための3次元インタラクティブ可視化ツールの開発

    第11回大気化学討論会, 2005

  • 衛星観測から得られた対流圏オゾンデータの相互比較

    第 118回地球電磁気・地球惑星圏学会講演会, 2005

  • 衛星観測から得られた対流圏オゾン・二酸化窒素の時空間分布〜対流圏量導出手法による違いと地上観測との比較〜

    第2回ゼヒュロスの会(対流圏微量成分衛星解析研究会), 2005

  • 衛星観測から得られた対流圏オゾンデータの検証

    日本気象学会秋季大会, 2005

  • GOMEのデータを用いた対流圏NO2分布の解析-発生源からの輸送に着目して

    日本気象学会秋季大会, 2005

  • Intercomparison among tropospheric ozone and nitrogen dioxide data obtained by satellite- and ground-based measurements

    2005 American Geophysical Union (AGU) Fall Meeting, 2005

  • Intercomparison among tropospheric ozone and nitrogen dioxide data obtained by satellite- and ground-based measurements

    2005 American Geophysical Union (AGU) Fall Meeting, 2005

  • Irreversible vertical mixing of ozone caused by inertio-gravity wave breaking in the lower stratosphere

    Quadrennial Ozone Symposium 2004, 2004

  • Climatology and origin of small-scale vertical structures in stratospheric ozone

    Quadrennial Ozone Symposium 2004, 2004

  • Climatology and origin of small-scale vertical structures of ozone in the lower stratosphere

    2004 American Geophysical Union (AGU) Fall Meeting, 2004

  • Irreversible vertical mixing of ozone caused by inertio-gravity wave breaking in the lower stratosphere

    Quadrennial Ozone Symposium 2004, 2004

  • Climatology and origin of small-scale vertical structures in stratospheric ozone

    Quadrennial Ozone Symposium 2004, 2004

  • Climatology and origin of small-scale vertical structures of ozone in the lower stratosphere

    2004 American Geophysical Union (AGU) Fall Meeting, 2004

  • 宇宙からのリモートセンシングによる地球惑星大気環境の研究

    野口克行; 上田真由; 入江仁士; 林寛生

    第23回環境リモートセンシングシンポジウム, 18 Feb. 2021, 18 Feb. 2021, 18 Feb. 2021

  • Rederivation of the MGS radio occultation measurements in the Martian south polar winter regions using MRO-MCS temperature climatology

    Katsuyuki Noguchi; Armin Kleinboehl; David Kass; Sylvain Piqueux

    43rd COSPAR Scientific Assembly, 01 Feb. 2021, 28 Jan. 2021, 04 Feb. 2021

  • 金星の上層大気で観測された気温擾乱とAFES-Venusによる比較

    尾沼日奈子; 野口克行; 杉本憲彦; 高木征弘; 安藤紘基; 今村剛

    第148回地球電磁気・地球惑星圏学会総会・講演会, 01 Nov. 2020, 01 Nov. 2020, 04 Nov. 2020

  • 衛星間電波掩蔽による惑星大気探査

    今村剛、安藤紘基、杉本憲彦、佐川英夫、高木征弘、野口克行、小郷原一智、山崎敦、岩田隆浩、山本智貴、五十里哲、川端陽介、佐野翔子、藤澤由紀子、船瀬龍、森本睦子、阿部未来、細野朝子

    日本地球惑星科学連合2020年大会(JpGU - AGU Joint Meeting 2020), 12 Jul. 2020, 12 Jul. 2020, 16 Jul. 2020

Association Memberships

  • American Geophysical Union

  • 日本リモートセンシング学会

  • 日本惑星科学会

  • 日本気象学会

  • 地球電磁気・地球惑星圏学会

  • 大気化学研究会

  • 日本地球惑星科学連合

  • American Geophysical Union

Works

  • 探査機リモートセンシングデータを用いた火星大気環境の研究

    Apr. 2018, Mar. - 2019

  • A study on the Martian atmospheric environment using remote sensing data obtained by Mars orbiter missions

    Apr. 2018, Mar. - 2019

  • 探査機リモートセンシングデータを用いた火星大気環境の研究

    Apr. 2017, Mar. - 2018

  • A study on the Martian atmospheric environment using remote sensing data obtained by Mars orbiter missions

    Apr. 2017, Mar. - 2018

  • 探査機リモートセンシングデータを用いた火星大気環境の研究

    Apr. 2016, Mar. - 2017

  • A study on the Martian atmospheric environment using remote sensing data obtained by Mars orbiter missions

    Apr. 2016, Mar. - 2017

  • 電波掩蔽観測データを用いた火星大気熱構造に関する基礎的研究

    Sep. 2014, Mar. - 2017

  • 探査機リモートセンシングデータを用いた火星大気環境の研究

    Apr. 2015, Mar. - 2016

  • A study on the Martian atmospheric environment using remote sensing data obtained by Mars orbiter missions

    Apr. 2015, Mar. - 2016

  • 火星ダスト類似エアロゾルの物理・光学特性測定

    Apr. 2014, Mar. - 2015

  • 対流圏オゾンおよび微量成分観測における短波長域地表面アルベドの影響評価

    Apr. 2014, Mar. - 2015

  • 可視紫外波長域を用いた対流圏微量成分観測における土地被覆分類データの応用

    Apr. 2013, Mar. - 2014

  • Application of land cover type maps to the spaceborne measurements of tropospheric constituents

    Apr. 2013, Mar. - 2014

  • JAXA大気球搭載光学オゾンゾンデ観測

    May 2013, May - 2013

  • 静止衛星・国際宇宙ステーション搭載紫外可視センサによる対流圏二酸化窒素の日内変動導出の検討

    Apr. 2012, Mar. - 2013

  • 静止衛星からのUV-Vis-IR観測による対流圏オゾンリトリーバル手法の研究

    Apr. 2012, Mar. - 2013

  • Investigation of retrieval technique of tropospheric ozone from UV-Vis.-IR spectra measured from a geostationary satellite

    Apr. 2012, Mar. - 2013

  • 静止衛星からの UV-Vis-IR 観測による対流圏オゾンリトリーバル手法の研究

    Apr. 2011, Mar. - 2012

  • 地上観測ネットワークのための、対流圏オゾンリモートセンシングおよびエアロゾルの研究

    Apr. 2011, Mar. - 2012

  • Investigation of retrieval technique of tropospheric ozone from UV-Vis.-IR spectra measured from a geostationary satellite

    Apr. 2011, Mar. - 2012

  • Investigation of remote sensing technique of tropospheric ozone and aerosol radiation effect for the network observation

    Apr. 2011, Mar. - 2012



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