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(Faculty Division of Natural Sciences Research Group of Environmental Sciences)｜Researchers' Profile Teacher performance management system

NOGUCHI Katsuyuki

Faculty Division of Natural Sciences Research Group of Environmental SciencesAssociate Professor
Last Updated :2026/04/14

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Profile Information

  • Name (Japanese)

    Noguchi

  • Name (Kana)

    Katsuyuki

Degree

  • Mar. 2004

Research Interests

  • Earth and Planetary Atmospheric Science
  • 惑星探査
  • 惑星大気
  • 火星大気
  • 金星大気
  • リモートセンシング
  • radio occultation measurement
  • 観測アルゴリズム
  • 人工衛星
  • CO2過飽和
  • CO2凝結
  • 二酸化炭素
  • 大気汚染
  • nitrogen dioxide
  • NO2

Research Areas

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

Research History

  • Apr. 2024 - Present, 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, Japan
  • Apr. 2023 - Present, 奈良女子大学研究院自然科学系准教授（現在）
  • Apr. 2012 - Mar. 2023, 奈良女子大学研究院自然科学系助教, Japan
  • 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
  • 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

Professional 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

Academic Activities

  • 第152回地球電磁気・地球惑星圏学会総会および講演会 学生発表賞 審査員, Review, 03 Nov. 2022 - 07 Nov. 2022
  • 第148回地球電磁気・地球惑星圏学会総会および講演会 学生発表賞 審査員, Review, 01 Nov. 2020 - 04 Nov. 2020
  • 第144回地球電磁気・地球惑星圏学会総会および講演会 学生発表賞 審査員, Review, 23 Nov. 2018 - 27 Nov. 2018

■Ⅱ．研究活動実績

Published Papers

  • Refereed, Journal of Geophysical Research: Planets, American Geophysical Union (AGU), A Study on CO2 Supersaturation in the Martian Southern Polar Night Using Mars Global Surveyor Radio Occultation Profiles Rederived With Mars Climate Sounder Temperature Climatology, Katsuyuki Noguchi; Armin Kleinböhl; Sylvain Piqueux, Abstract

    We investigate supersaturation in the Martian southern polar night using rederived vertical profiles from Mars Global Surveyor (MGS) radio occultation (RO) measurements. Supersaturation, which affects not only local condensation but also the polar and global atmospheric dynamics, occurs when temperatures fall below the saturation point. Conventional MGS‐RO retrievals suffer from uncertainties in atmospheric composition, as they do not account for depletion due to its condensation onto the seasonal polar ice caps, and from the use of fixed or empirically chosen uppermost temperatures. To address these limitations, we apply a revised retrieval scheme that incorporates a latitude‐ and season‐dependent estimate of the mixing ratio based on Mars Odyssey Gamma Ray Spectrometer argon data, along with a temperature climatology derived from Mars Climate Sounder (MCS) observations on board the Mars Reconnaissance Orbiter. We find that the original RO data underestimated supersaturation occurrence by 10%–20 % inside, and overestimated it by a similar fraction outside, the polar night. The updated profiles reveal that supersaturation commonly occurs up to 15 km altitude and S latitude, with seasonal and vertical variations peaking before the southern winter solstice. A comparison with MCS‐derived surface ice temperatures shows general consistency, although notable vertical gradients and near‐surface cold layers indicate complex boundary‐layer thermodynamics. These results demonstrate that reducing key assumptions in RO retrievals yields improved constraints on Martian polar processes, providing new insights into the spatial and temporal behavior of supersaturation during southern winter., 29 Jan. 2026, 131, 2, e2025JE009354, Scientific journal, 10.1029/2025je009354
    URLDOI URL
  • Refereed, Journal of Geophysical Research: Planets, American Geophysical Union (AGU), Dust and Cloud Transport by Traveling Waves in the Martian Atmosphere Studied With Mars Climate Sounder, Nozomi Kakinuma; Shohei Aoki; Takeshi Imamura; Katsuyuki Noguchi; Armin Kleinböhl, Abstract

    Traveling waves in the Martian atmospheres play a crucial role in determining the weather and climate, particularly at mid‐to‐high latitudes. Previous observations have shown that these waves become prominent from early autumn to late winter in the northern hemisphere, influencing the dust cycle. However, their impact on the transport of dust and water ice clouds has not been studied quantitatively. Investigating the interaction between traveling waves and transport of such substances provides deeper insights into the climatology of Mars. In this study, we utilize data taken by the Mars Climate Sounder (MCS) onboard the Mars Reconnaissance Orbiter. Observations reveal eastward‐propagating waves during the northern autumn and winter, identified as Rossby waves. The results show that waves with a zonal wavenumber of 1 become prominent during this period and in this region. Moreover, there is a correlation among the periodic variations in temperature, dust, and water ice. The amplitudes of the temperature, dust, and water ice variations are roughly consistent with each other, suggesting that the variations are all driven by the meridional advection associated with the traveling waves. These findings suggest that traveling waves play a significant role in the transport of dust and water ice clouds on Mars., 24 Jan. 2026, 131, 1, e2025JE009387, Scientific journal, 10.1029/2025je009387
    URLDOI URL
  • Refereed, Journal of Geophysical Research: Planets, American Geophysical Union (AGU), Long‐Term Variability of the Thermal Structure in Venus's Low‐Latitude Atmosphere Investigated Using Venus Express and Akatsuki Radio Occultations, Hiroki Ando; Katsuyuki Noguchi; Takeshi Imamura; Masahiro Takagi; Hideo Sagawa; Atsushi Yamazaki; Janusz Oschlisniok; Silvia Tellmann; Martin Pätzold; Bernd Häusler; Yeon Joo Lee; Raj Kumar Choudhary; Maria Antonita, Abstract

    Despite decades of exploration, Venus's climate system governing the atmosphere beneath the cloud top (70 km altitude) remains poorly understood due to the persistent thick cloud cover. Here, we present the first detailed characterization of temporal variability in the thermal structure of Venus's low‐latitude atmosphere from the sub‐cloud region to the mesosphere (45–80 km), using 257 vertical temperature profiles obtained from Venus Express and Akatsuki radio occultation measurements in 2006–2024. Remarkable decadal temperature variations of 10 K were observed below 55 km, far exceeding those of 2 K seen at comparable pressure levels in Earth's tropics. In terms of the relative variation, the change on Venus over a decade is 1.4%, which is larger than the corresponding value of 0.6% in Earth's tropical region, indicating that the variability on Venus is more pronounced. The variation in temperature partly correlates with that in the ultraviolet albedo of Venus's cloud, suggesting potential links to the solar heating, cloud physics, and photochemistry. Furthermore, the variations in temperature and geopotential height are nearly in phase with those in zonal wind speed at the cloud top, indicating a strong coupling between the atmospheric dynamics in the upper cloud and the underlying thermal structure. While the mechanisms behind the observed variations remain elusive, our findings reveal that Venus has a more pronounced intrinsic climate variability than Earth. To elucidate Venus's climate system, we need long‐term and continuous observations by successive future missions., 08 Nov. 2025, 130, 11, e2025JE009218, Scientific journal, 10.1029/2025je009218
    URLDOI URL
  • Refereed, Journal of Geophysical Research: Planets, American Geophysical Union (AGU), Radio Scintillation and Gravity Wave Characteristics in the Venusian Atmosphere: Insights From Akatsuki Radio Occultation, Katsuyuki Noguchi; Aika Hagino; Hiroki Ando; Takeshi Imamura; Silvia Tellmann; Martin Pätzold, Abstract

    We investigated the relationship between radio scintillations—short‐term fluctuations in radio signal intensity—and temperature fluctuations, both observed in vertical profiles from JAXA's Akatsuki radio occultation. Our results indicate that the radio scintillations and the temperature fluctuations are each strongly related to static stability: both are weaker in the low‐stability layer at 50–55 km and stronger in the adjacent highly stable layers. Consistent negative phase correlations above 60 km were found between the radio scintillations and the temperature fluctuations, and both quantities exhibited similar altitude‐dependent attenuation trends. Assuming that the observed temperature fluctuations were generated by atmospheric gravity waves, these findings suggest that radio scintillations are likewise modulated by the same underlying gravity waves, which are likely subject to radiative damping. Using the observed temperature fluctuations, we further estimated key wave parameters, including the intrinsic frequency and the horizontal wavelength, based on the linear wave theory. The estimated horizontal wavelengths of 100–300 km are consistent with previous radio occultation measurements. While optical observations by previous missions have detected similar or shorter‐scale horizontal wavy structures at the upper cloud level (60–70 km), their vertical wavelengths are longer than those derived in this study, suggesting that radio occultation and optical measurements capture waves with different scales. Additionally, the estimated parameters exhibit no strong dependence on local time, longitude, or latitude, and show no clear long‐term variation. These results help constrain gravity wave characteristics in the Venusian atmosphere and may provide useful insights into future atmospheric modeling and communication systems for entry probes., 14 Oct. 2025, 130, 10, e2025JE009149, Scientific journal, 10.1029/2025je009149
    URLDOI URL
  • Refereed, Journal of Geophysical Research: Planets, American Geophysical Union (AGU), Vertical Propagation of Venusian Thermal Tides Above and Below Clouds Revealed by Akatsuki Radio Occultation, Hiroki Ando; Katsuyuki Noguchi; Takeshi Imamura; Masahiro Takagi; Norihiko Sugimoto; Yoshihisa Matsuda; Silvia Tellmann; Martin Pätzold; Bernd Häusler; Raj Kumar Choudhary; Maria Antonita, Abstract

    The vertical structure of the thermal tide in the Venusian low‐latitude region (0–30 latitudes) was investigated by the Akatsuki radio occultation measurements. The result shows that the phase of the diurnal tide little varies in the vertical direction, while that of the semidiurnal tide tilts toward earlier local times with increasing altitude above 65 km and tilts in the same direction with decreasing altitude below 50 km. This indicates that the semidiurnal tide is excited between 50 and 65 km altitudes and propagates upward above these heights and downward below. The vertical momentum flux associated with the semidiurnal tide in low latitudes was calculated above 58 km, and the associated acceleration rate was estimated to be 0.30 m   near the cloud top, which is comparable to those expected in the previous numerical studies. Our results observationally confirmed the simultaneous upward and downward propagations of the thermal tide, which can account for the vertical shear of the Venusian atmospheric superrotation in low latitudes, supporting the previous theoretical predictions., 08 Sep. 2025, 130, 9, e2025JE009165, Scientific journal, 10.1029/2025je009165
    URLDOI URL
  • Refereed, Icarus, Elsevier BV, X-band scintillations in Venus radio occultations observed by Akatsuki, Ralph D. Lorenz; Takeshi Imamura; Hiroki Ando; Katsuyuki Noguchi, Sep. 2024, 420, 116193, 116193, Scientific journal, 10.1016/j.icarus.2024.116193
    DOI URL
  • Refereed, Nature Communications, Springer Science and Business Media LLC, 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, Jun. 2021, 12, 3682, Scientific journal, 10.1038/s41467-021-24002-1
    DOI URLScopus URLScopus Citedby URL
  • Refereed, Astrobiology, SAGE Publications, Potential for Aerobic Methanotrophic Metabolism on Mars, Mayumi Seto; Katsuyuki Noguchi; Philippe Van Cappellen, 01 Oct. 2019, 19, 10, 1187, 1195, Scientific journal, 10.1089/ast.2018.1943
    URLDOI URL
  • Refereed, International Journal of Electronics and Applied Research, Electronic Scientists and Engineers Society, Local time, annual, latitude, and seasonal variations of total electron content over Japan, K.-I. Oyama; K. Noguchi, 22 Aug. 2019, 06, 02, 87, 97, Scientific journal, 10.33665/ijear.2019.v06i02.002
    URLDOI URL
  • Refereed, Acta Astronautica, Elsevier BV, 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, Jul. 2019, 160, 421, 432, Scientific journal, 10.1016/j.actaastro.2019.03.081
    DOI URLScopus URLScopus Citedby URL
  • Refereed, Journal of Geophysical Research: Atmospheres, American Geophysical Union (AGU), Characteristics of Atmospheric Wave‐Induced Laminae Observed by Ozonesondes at the Southern Tip of South America, H. Ohyama; A. Mizuno; F. Zamorano; T. Sugita; H. Akiyoshi; K. Noguchi; E. Wolfram; J. Salvador; G. C. Benitez, 06 Nov. 2018, 123, 21, 11,811, 11,829, Scientific journal, 10.1029/2018jd028707
    URLDOI URL
  • Refereed, Journal of Geophysical Research: Planets, American Geophysical Union (AGU), 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, 06 Sep. 2018, 123, 9, 2270, 2280, Scientific journal, 10.1029/2018je005640
    URLDOI URLScopus URLScopus Citedby URL
  • Refereed, Atmospheric Measurement Techniques, Copernicus GmbH, 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, 26 Mar. 2018, 11, 3, 1653, 1668, Scientific journal, 10.5194/amt-11-1653-2018
    URLDOI URL
  • Refereed, Earth, Planets and Space, Initial performance of the radio occultation experiment in the Venus orbiter mission Akatsuki, Takeshi Imamura; Hiroki Ando; Silvia Tellmann; Martin Pätzold; Bernd 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, 03 Oct. 2017, 69, 137, Scientific journal, 10.1186/s40623-017-0722-3
    DOI URL
  • Refereed, Progress in Earth and Planetary Science, 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, 21 Jun. 2017, 4, 16, Scientific journal, 10.1186/s40645-017-0131-z
    DOI URL
  • Refereed, Journal of Geophysical Research: Planets, 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. Pätzold, 21 May 2017, 122, 5, 912, 926, Scientific journal, 10.1002/2016je005142
    DOI URL
  • Refereed, Journal of Space Science Informatics Japan, Conversion of the MRO/MCS data into netCDF format and gridding of them for analysis and visualization by the use of GrADS, NOGUCHI Katsuyuki; Hiroo Hayashi, Apr. 2017, 6, 109, 116, Scientific journal, 10.20637/JAXA-RR-16-007/0010
    DOI URL
  • Refereed, Journal of Space Science Informatics Japan, A method of visualization of three-dimensional data by "gnuplot", Katsuyuki Noguchi, Mar. 2016, 5, 123, 131, Scientific journal
  • Refereed, Journal of Geophysical Research: Planets, 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. Pätzold, 05 Dec. 2014, 119, 12, 2510, 2521, Scientific journal, 10.1002/2014je004629
    DOI URL
  • Refereed, Atmospheric Measurement Techniques, Effect of surface BRDF of various land cover types on geostationary observations of tropospheric NO 2, K. Noguchi; A. Richter; V. Rozanov; A. Rozanov; J. P. Burrows; H. Irie; K. Kita, 10 Oct. 2014, 7, 10, 3497, 3508, Scientific journal, 10.5194/amt-7-3497-2014
    DOI URL
  • Refereed, Advances in Space Research, 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, Jun. 2012, 49, 12, 1743, 1749, Scientific journal, 10.1016/j.asr.2012.03.012
    DOI URL
  • Refereed, Advances in Space Research, 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, Nov. 2011, 48, 9, 1551, 1564, Scientific journal, 10.1016/j.asr.2011.06.029
    DOI URL
  • Refereed, Astronomy Reports, Pleiades Publishing Ltd, 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, 12 Nov. 2010, 54, 11, 1032, 1041, Scientific journal, 10.1134/s1063772910110089
    URLDOI URL
  • Refereed, Journal of the Remote Sensing Society of Japan, The Remote Sensing Society of Japan, Comparison of Tropospheric NO2 Observations by GOME and the Air-quality Monitoring Network Around Tokyo, Japan, NOGUCHI Katsuyuki; ITOH Haruna; SHIBASAKI Tokiko; HAYASHIDA Sachiko; UNO Itsushi; OHARA Toshimasa; RICHTER Andreas; BURROWS John P., We compared satellite and ground-based observations of tropospheric NO2 to test whether satellite observations could successfully detect the behavior of tropospheric NO2. The satellite data were tropospheric NO2 vertical column density (VCD) derived from Global Ozone Monitoring Experiment (GOME) spectrometer measurements (hereafter GOME-NO2), and the ground-based data were surface NO2 volume mixing ratio (VMR) observed by the network of air-quality monitoring stations in Japan. The analysis was performed in the Tokyo region (the Kanto Plain) from January 1996 to June 2003. A strong correlation between GOME-NO2 and the surface VMR was observed, with the two quantities showing similar seasonal variation of maximum in winter, minimum in summer. This provided initial evidence that GOME was successful in observing the behavior of NO2 near the surface level in the Tokyo region. We performed a more rigorous comparison in which the surface NO2 VMR was scaled to the tropospheric VCD using vertical NO2 VMR profiles, which were calculated using the chemical transport model CMAQ/REAS. This second comparison indicated that the GOME observations represent the behavior of NO2 more closely at the relatively unpolluted stations than at the highly polluted stations in the network of air-quality monitoring. This tendency was thought to result from the horizontal heterogeneity within a GOME footprint. Comparison with a previous study in northern Italy showed that the GOME-NO2 measurements over Tokyo tended to be smaller than those over northern Italy. Because Tokyo is located in a coastal land region with a gulf, areas of ocean intruding into the GOME pixels could lower the observed GOME-NO2. The pollution in Tokyo is so spatially concentrated that the rural regions contaminating GOME pixels could also reduce the observed NO2 concentration from its true spatially resolved value., 2009, 29, 2, 398, 409, Scientific journal, 10.11440/rssj.29.398
    DOI URL
  • Refereed, Tenki, On Global Methane Observation from Space by SCIAMACHY, Ariyama, Y.; S. Etoh; K. Noguchi; S. Hayashida, 2009, 56, 8, 603, 611, Scientific journal
  • Refereed, SOLA, Spatiotemporal Variation in Tropospheric Column Ozone over East Asia Observed by GOME and Ozonesondes, S. Hayashida; N. Urita; K. Noguchi; X. Liu; K. Chance, 2008, 4, 117, 120, Scientific journal, 10.2151/sola.2008-030
    DOI URL
  • Refereed, Atmospheric Chemistry and Physics, Systematic analysis of interannual and seasonal variations of model-simulated tropospheric NO 2 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, 27 Mar. 2007, 7, 6, 1671, 1681, Scientific journal, 10.5194/acp-7-1671-2007
    DOI URL
  • Refereed, SOLA, 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, Mar. 2007, 3, 41, 44, Scientific journal, 10.2151/sola.2007-011
    DOI URL
  • Refereed, Journal of Geophysical Research: Atmospheres, Blackwell Publishing Ltd, 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, 16 Dec. 2006, 111, 23, D23105, Scientific journal, 10.1029/2006JD007232
    DOI URL
  • Refereed, Astronomy & Astrophysics, Phase scintillation observation during coronal sounding experiments with NOZOMI spacecraft, T. Imamura; K. Noguchi; A. Nabatov; K.-I. Oyama; Z. Yamamoto; M. Tokumaru, 12 Aug. 2005, 439, 3, 1165, 1169, Scientific journal, 10.1051/0004-6361:20042614
    DOI URL
  • Refereed, Advances in Space Research, Detectability of lunar plasma clouds from SELENE radio occultations, A. S. Nabatov; T. Imamura; N. A. Savich; K.-I. Oyama; K. Noguchi, Jun. 2003, 31, 11, 2369, 2375, Scientific journal, 10.1016/S0273-1177(03)00548-9
    DOI URL
  • Refereed, Radio Science Bulletin, Radio occultation projects in space programs of Japan, Noguchi, K.; T. Imamura; K.-I. Oyama; A. S. Nabatov, Dec. 2002, 303, 27, 31, Scientific journal
  • Refereed, Advances in Space Research, Cislunar plasma exploration with the SELENE radio science system, K.-I. Oyama; A. S. Nabatov; N. A. Savich; T. Imamura; Z. Yamamoto; K. Noguchi, Oct. 2002, 30, 8, 1915, 1919, Scientific journal, 10.1016/S0273-1177(02)00488-X
    DOI URL
  • Refereed, Radio Science, 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, Nov. 2001, 36, 6, 1607, 1613, Scientific journal, 10.1029/2000RS002591
    DOI URL
  • Not Refereed, Advances in Space Research, First test of the NOZOMI Radio Science System in actual space flight, K.-I. Oyama; A. S. Nabatov; N. A. Savich; Z. Yamamoto; T. Imamura; T. Ichikawa; K. Noguchi, Nov. 2001, 27, 11, 1847, 1850, Scientific journal, 10.1016/S0273-1177(01)00307-6
    DOI URL
  • Refereed, Journal of the Society of Instrument and Control Engineers, Efficiency of a Group Consisted of Robots with Heterogeneous Motion Algorithms, Kurabayashi, D.; J. Ota; T. Arai; K. Noguchi, Nov. 1999, 35, 11, 1377, 1384, Scientific journal, 10.9746/sicetr1965.35.1377
    DOI URL

MISC

  • Not Refereed, 25 Dec. 2024, 33, 4, 463, 464, Introduction scientific journal, 10.14909/yuseijin.33.4_463
    DOI URL
  • Not Refereed, 25 Dec. 2023, 32, 4, 313, 315, Introduction scientific journal, 10.14909/yuseijin.32.4_313
    DOI URL
  • Refereed, JAXA Research and Development Report, Profile retrieval of the stratospheric ozone and nitrogen dioxide with spectrometer type balloon-borne optical ozone sensor, MURATA Isao; NOGUCHI Katsuyuki, Jan. 2020, JAXA-RR-19, 002, Introduction research institution, 10.20637/JAXA-RR-19-002/0001
    DOI URL
  • Not Refereed, 25 Jun. 2019, 28, 2, 153, 156, Meeting report, 10.14909/yuseijin.28.2_153
    DOI URL
  • Not Refereed, 2017, 157, 160, Introduction research institution
  • Not Refereed, 2015, 24, 3, 292, 293, Meeting report, 10.14909/yuseijin.24.3_292
    DOI URL
  • Refereed, SPIE Proceedings, 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, 21 Nov. 2012, 8524, 85242D, Summary international conference, 10.1117/12.974818
    DOI URL
  • Refereed, High-Performance Computing, Development of an interactive visual data mining system for atmospheric science, Chiemi Watanabe; Eriko Touma; Kazuko Yamauchi; Katsuyuki Noguchi; Sachiko Hayashida; Kazuki Joe, 2008, 4759, 279, 286
  • Refereed, The 2007 International Conference on Parallel and Distributed Processing Techniques and Applications, 3D Visualization System Gateau for Atmospheric Science: Design Concept and Practical Evaluation, Touma, E.; K. Noguchi; M. Takata; H. Kamo; N. Nide; K. Joe, 2007, 2, 766, 772, Summary international conference
  • Refereed, 2005, 13, 4, 6, Introduction other
  • Not Refereed, ISAS Research Note, Climatology and origin of small-scale vertical structures in stratospheric ozone, NOGUCHI Katsuyuki, 2004, 775, Report research institution
  • Refereed, 2000 International Symposium on Antennas and Propagation (Fukuoka), A study on the fluctuation of the terrestrial ionosphere for the radio occultation measurements of planetary ionospheres, Noguchi, K.; T. Imamura; K.-I. Oyama, Aug. 2000, Summary international conference
  • Not Refereed, The Institute of Space and Astronautical Science Report, Japan Aerospace Exploration Agency, A Feasibility Study for Observing Small Lunar and Martian Ionospheres by Radio Occultation Technique, NOGUCHI Katsuyuki; Noguchi, K; T. Imamura; K.-I. Oyama, The fluctuation of the terrestrial ionosphere, which is a serious error source when we try to obtain the information on planetary ionospheres by the radio occultation measurement, is focused on in this study. We are preparing for the radio occultation measurements of the Martian atmosphere and the lunar ionosphere by using the spacecrafts Nozomi and Selene, respectively. By using the radio occultation method, we can measure the electron densities in planetary ionospheres. The phase of the radio wave transmitted from the spacecraft to the Earth is per-turbed when the radio wave passes through the planetary ionosphere. The electron density profile can be derived from the phase perturbation.The inforrnation on the nightside ionosphere of Mars is based on the observations by the Mars 4 and 5 and the Viking orbiter. The detection of the lunar ionosphere by radio occultation technique was reported in the Luna 22 mission. Since the phase shift caused by the fluctuation of the terrestrial ionosphere is comparable to those by the Martian nightside ionosphere and the lunar ionosphere, the detection of these ionospheres is difficult in general. The fluctuation of the terrestrial Total Electron Content (TEC) along the ray path between the spacecraft and the receiv-ing station is estimated from two coherent signals transmitted from several Global Positioning System (GPS) satel-lites. We can obtain the TEC information over Japan from the GPS network of the Geographical Survey Institute (GSI) in Japan, GPS Earth Observation Network (GEONET). The possibility of the detection of the Martian nightside ionosphere and the lunar ionosphere at each local time is investigated for the summer and winter cases by using the TEC data obtained by the GPS network. The result indi-cates that the Martian nightside ionosphere and the lunar ionosphere can be measured if we choose suitable condi-tions of the terrestrial ionosphere for the measurement and monitor the fluctuation of the terrestrial ionosphere along the ray path of the radio occultation by using the GPS network. There are several ways to estimate the TEC fluctuation of the terrestrial ionosphere by using the GPS network. In general, it is difficult to find a GPS satellite-ground receiver pair whose ray path is close to the ray path of the radio occultation measurement of the planetary atmosphere. Therefore, we develop a method to estimate the TEC fluctua-tion of the terrestrial ionosphere along the ray path of the radio occultation by many GPS satellite-ground receiver pairs. The feasibility of this method is tested by regarding one GPS satellite as the Nozomi or Selene spacecraft. A qualitatively good agreement between the true TEC and the estimated TEC was obtained by this method., 2000, 678, 1, 30, Report research institution

Presentations

  • Martin Paetzold; Tom Ander; Silvia Tellmann; Dirk Plettemeier; Jan Budrowei; Takeshi Imamura; Hiroki Ando; Antonio Genova; Matthias Hahn; Katsuyuki Noguchi; Janusz Oschlisniok; Kerstin Peter; Wolfgang Schaefer; Beatriz Sanchez-Cano; Francois Leblanc, American Geophysical Union Annual Meeting 2025 (AGU25), The Radio Crosslink Instrument MaCro Aboard M-MATISSE, Oral presentation, 18 Dec. 2025
  • Chikako Hashimoto; Katsuyuki Noguchi; Hitoshi Irie, The 30th CEReS International Symposium & The 28th CEReS Environmental Remote Sensing Symposium, Application and Improvement of Gravity Wave Analysis Techniques, Established for the Earth's Atmosphere, to the Martian Atmosphere, Oral presentation, 01 Dec. 2025
  • Moe Oka; Katsuyuki Noguchi; Hitoshi Irie, The 30th CEReS International Symposium & The 28th CEReS Environmental Remote Sensing Symposium, A study on the aerosol transport in the Martian atmosphere using remote sensing data, Oral presentation, 01 Dec. 2025
  • Katsuyuki Noguchi; Hitoshi Irie, The 30th CEReS International Symposium & The 28th CEReS Environmental Remote Sensing Symposium, A study on the spaceborne remote sensing for the observations of Earth and planetary atmospheric environments, Oral presentation, 01 Dec. 2025
  • Poster presentation, 26 Nov. 2025
  • Oral presentation, 25 Nov. 2025
  • Oral presentation, 25 Nov. 2025
  • Aerosol transport by traveling waves in the Martian atmosphere studied with MRO/MCS data, Oral presentation, 25 Nov. 2025
  • Poster presentation, 06 Nov. 2025
  • Katsuyuki Noguchi, COSPAR 2025 Scientific Symposium, Observations of the Freezing Martian Atmosphere, Poster presentation, 03 Nov. 2025
  • Noguchi, K.; A. Kleinbohl; S. Piqueux, Mars Through Time International Conference, A study on CO2 supersaturation in the Martian southern polar night using MGS radio occultation profiles rederived with MCS temperature climatology, Poster presentation, 13 Oct. 2025
  • Martin Paetzold; Tom Ander; Tobias Vorderobermeier; Silvia Tellmann; Dirk Plettemeier; Jan Budrowei; Takeshi Imamura; Hiroki Ando; Antonio Genova; Matthias Hahn; Katsuyuki Noguchi; Janusz Oschlisniok; Kerstin Peter; Wolfgang Schaefer; Beatriz Sanchez-Cano; Francois Leblanc, EPSC-DPS Joint Meeting 2025, The MaCro Instrument Aboard M-MATISSE: Scientific Objectives and Operational Concepts, Oral presentation, 07 Sep. 2025
  • Hiroki Ando; Katsuyuki Noguchi; Takeshi Imamura; Masahiro Takagi; Norihiko Sugimoto; Yoshihisa Matsuda; Silvia Tellmann; Martin Paetzold; Bernd Haeusler; Raj Choudhary; Maria Antonita, EPSC-DPS Joint Meeting 2025, Vertical propagation of Venusian thermal tides above and below clouds investigated by Akatsuki radio occultation, Oral presentation, 07 Sep. 2025
  • Tom Ander; Martin Paetzold; Tobias Vorderobermeier; Silvia Tellmann; Dirk Plettemeier; Jan Budrowei; Takeshi Imamura; Hiroki Ando; Antonio Genova; Matthias Hahn; Katsuyuki Noguchi; Janusz Oschlisniok; Kerstin Peter; Wolfgang Schaefer; Beatriz Sanchez-Cano; Francois Leblanc, EPSC-DPS Joint Meeting 2025, The MaCro Instrument Concept for Dual-Frequency Crosslink Occultations at Mars, Poster presentation, 07 Sep. 2025
  • Poster presentation, 03 Sep. 2025
  • Martin Paetzold, Tom Andert, Silvia Tellmann, Tobias Vorderobermeier, Hiroki Ando, an Budrwweit, Antonio Genova, Matthias Hahn, Takeshi Imamura, Francois Leblanc, Katsuyuki Noguchi, Janusz Oschlisniok, Kerstin Peter, Dirk Plettemeier, Beatriz Sanchez-Cano, Wolfgang Schaefer, Asia Oceania Geosciences Society (AOGS) 22nd Annual Meeting, Science Objectives and Operations of the M-matisse Crosslink Occultation Instrument Macro, Invited oral presentation, 01 Aug. 2025
  • Hiroki Ando; Katsuyuki Noguchi; Takeshi Imamura; Masahiro Takagi; Norihiko Sugimoto; Yoshihisa Matsuda; Silvia Tellmann; Martin Paetzold, Bernd Haeusler; Raj Choudhary; Maria Antonita, Asia Oceania Geosciences Society (AOGS) 22nd Annual Meeting, Long-term Variation of the Venusian Low-latitude Atmospheric Temperature Obtained by Venus Express and Akatsuki Radio Occultations,, Poster presentation, 29 Jul. 2025
  • Moe Oka; Katsuyuki Noguchi; Armin Kleinboehl; David Kass; Hiroo Hayashi, Characteristics of dust plumes detected during Martian regional dust storms by MRO-MCS observations, Poster presentation, 27 May 2025
  • Tobias Vorderobermeier; Tom Ander; Martin Paetzold; Silvia Tellmann; Dirk Plettemeier; Jan Budrowei; Takeshi Imamura; Hiroki Ando; Antonio Genova; Matthias Hahn; Katsuyuki Noguchi; Janusz Oschlisniok; Kerstin Peter; Wolfgang Schaefer; Beatriz Sanchez-Cano; Francois Leblanc, European Geosciences Union (EGU) General Assembly 2025, The M-MATISSE Crosslink Occultation Instrument MaCro, Oral presentation, 27 Apr. 2025
  • Poster presentation, 20 Feb. 2025
  • Poster presentation, 26 Nov. 2024
  • Hiroki Ando; Katsuyuki Noguchi; Takeshi Imamura; Hideo Sagawa; Janusz Oschlisniok; Silvia Tellmann; Martin Paetzold, Europlanet Science Congress (EPSC) 2024, Long-term variations of temperature and H2SO4 gas mixing ratio in the Venusian atmosphere studied with Venus Express and Akatsuki radio occultation measurements, Oral presentation, 08 Sep. 2024
  • Noguchi, K.; M. Shimomura; N. Takahashi; C. Hashimoto; A. Kleinboehl; D. Kass; S. Piqueux, MCS extended Science Team Meeting 2024, CO2 supersaturation in polar night by MGS radio science with MCS temperature climatology, Oral presentation, 20 Jul. 2024
  • Hiroki Ando; Katsuyuki Noguchi; Takeshi Imamura; Masahiro Takagi; Norihiko Sugimoto; Yoshihisa Matsuda, 45th COSPAR Scientific Assembly, Propagation of Venusian thermal tides both upward and downward from the cloud top revealed by the Akatsuki radio occultation, Oral presentation, 18 Jul. 2024
  • Noguchi, K.; M. Shimomura; N. Takahashi; C. Hashimoto; A. Kleinboehl; D. Kass; S. Piqueux, 8th International Conference on Mars Polar Science and Exploration, A Study on CO2 Supersaturation in the Martian Southern Polar Night by MGS Radio Occultation Profiles Rederived with MCS Temperature Climatology, Poster presentation, 08 Jul. 2024
  • Yuna Katsuyama; Nonoka Takahashi; Katsuyuki Noguchi; Takeshi Imamura; Ryutaro Sakurai, Vertical profiles of temperature in the polar night regions of the Martian atmosphere observed by MGS radio occultation measurements using the FSI method, Poster presentation, 30 May 2024
  • Hiroki Ando; Katsuyuki Noguchi; Takeshi Imamura, Workshop on Venus and other related atmospheres, Long-term variation of temperature and H2SO4 gas mixing ratio by the Venus Express and Akatsuki radio occultation measurements, Oral presentation, 26 Mar. 2024
  • Katsuyuki Noguchi; Hinako Onuma; Hiroki Ando; Takeshi Imamura; Hideo Sagawa, Workshop on Venus and other related atmospheres, Derivation of vertical profiles of sulfur dioxide (SO2) in the Venus cloud layer by the Akatsuki radio occultation measurements, Oral presentation, 26 Mar. 2024
  • M. Paetzold; T. Ander; T. Imamura; H. Ando; A. Genova; M. Hahn; K. Noguchi; J. Oschlisniok; K. Peter; S. Tellmann, EGU General Assembly 2024, M-Matisse Crosslink experiment MaCro: an intersatellite radio link for the sounding of the Martian atmosphere, Oral presentation, 11 Mar. 2024
  • Oral presentation, 23 Oct. 2023
  • Oral presentation, 23 Oct. 2023
  • Poster presentation, 11 Oct. 2023
  • Silvia Tellmann; Ber; d Haeusler; Martin Paetzold; Hiroki Ando; Takeshi Imamura; Katsuyuki Noguchi; Janusz Oschlisniok; Kerstin Peter; Caroline Dumoulin; Pascal Rosenbla, 55th Annual Meeting of the Division for Planetary Sciences, Long-term Studies of the Venusian atmosphere with the Radio Occultation Experiment VeRa on Venus Express, Oral presentation, 06 Oct. 2023
  • Silvia TELLMANN; Martin PAETZOLD, Be; HAEUSLER; Hiroki ANDO; Takeshi IMAMURA; Katsuyuki NOGUCHI; Janusz OSCHLISNIOK; Kerstin Peter, Asia Oceania Geosciences Society (AOGS) 20th Annual Meeting, Long-Term Studies of the Venusian Atmosphere by the radio occultation experiments on Venus Express and PVO, Oral presentation, 30 Jul. 2023
  • Oral presentation, 24 May 2023
  • Nozomi Kakinuma; Takeshi Imamura; Shohei Aoki; Katsuyuki Noguchi; Armin Kleinboehl, Mid-latitude disturbances in the Martian atmosphere studied with MRO MCS data, Poster presentation, 23 May 2023
  • Nonoka Takahashi; Katsuyuki Noguchi; Takeshi Imamura, A study on the vertical structures of the Martian atmosphere in the radio occultation measurements with Full Spectrum Inversion, Poster presentation, 23 May 2023
  • Hiroki Ando; Takeshi Imamura; Katsuyuki Noguchi; Silvia Tellmann; Martin Paetzold; Bernd Haeusler; Sanjay Limaye; Raj Kumar Choudhary; Maria Antonita, 2023 EnVision International Venus Science Workshop, Venusian atmospheric structure revealed by Venus Express and Akatsuki radio occultation measurements, Oral presentation, 11 May 2023
  • Katsuyuki Noguchi; Hinako Onuma; Hiroki Ando; Takeshi Imamura; Hideo Sagawa, 2023 EnVision International Venus Science Workshop, Vertical profiles of sulfuric acid vapor (H2SO4) and sulfur dioxide (SO2) in the Venus atmosphere obtained by the Akatsuki radio occultation measurements, Oral presentation, 11 May 2023
  • Katsuyuki Noguchi; Hinako Onuma; Hiroki Ando; Takeshi Imamura; Hideo Sagawa, Workshop for Venus modelling and observations 2023 (Lisbon), SO2 estimations in the Venusian atmosphere observed by spacecrafts, Oral presentation, 22 Mar. 2023
  • Katsuyuki Noguchi; Aika Hagino; Chihiro Idehara; Hiroki Ando; Takeshi Imamura, Workshop for Venus modelling and observations 2023 (Lisbon), Temperature perturbations in the Venusian atmosphere observed by spacecrafts, Oral presentation, 22 Mar. 2023
  • Onuma, H; K. Noguchi; H. Ando; T. Imamura; H. Sagawa, The 54th Lunar and Planetary Science Conference, Derivation of Vertical Profiles of SO2 in the Venus Cloud Layer by the Akatsuki Radio Occultation Measurements, Poster presentation, 14 Mar. 2023
  • Katsuyuki Noguchi; Aika Hagino; Chihiro Idehara; Hiroki Ando; Takeshi Imamura, Workshop for Venus modelling and observations 2023 (Paris), Temperature perturbations in the Venusian atmosphere observed by spacecrafts, Oral presentation, 14 Mar. 2023
  • Oral presentation, 16 Feb. 2023, 16 Feb. 2023 - 16 Feb. 2023
  • Ando, H; T. Imamura; K. Nogouchi; S. Tellmann; M. Paetzold; B. Haeusler; R. K. Choudhary; M. Antonita, Venus Surface and Atmosphere, Venusian Atmospheric Structures Revealed by Akatsuki Radio Occultation Measurements, Oral presentation, 31 Jan. 2023
  • Hiroki Ando; Katsuyuki Noguchi; Takeshi Imamura; Masahiro Takagi; Norihiko Sugimoto; Yoshihisa Matsuda; Silvia Tellmann; Martin Paetzold; Bernd Haeusler; Sanjay S Limaye; R. K. Choudhary; Maria Antonita, American Geophysical Union Fall Meeting 2022, Vertical structure of the thermal tides in the Venusian equatorial region clarified by Akatsuki radio occultation measurements, Oral presentation, 15 Dec. 2022
  • Poster presentation, 05 Nov. 2022
  • Poster presentation, 05 Nov. 2022
  • Oral presentation, 24 Oct. 2022
  • Takeshi Imamura; Hiroki Ando; Katsuyuki Noguchi; R. K. Choudhary; Bernd Haeusler; Martin Paetzold; Silvia Tellmann, Venus Science Conference 2022, Recent results on the Venusian atmosphere from Akatsuki radio occultation, Oral presentation, 29 Sep. 2022
  • Ando, H; K. Noguchi; T. Imamura; M. Takagi; N. Sugimoto; Y. Matsuda; S. Tellmann; M. Paetzold; B. Haeusler; S. S. Limaye; R. Kumar Choudhary; M. Antonita, Asia Oceania Geosciences Society (AOGS) 19th Annual Meeting, Vertical Structure of Thermal Tides in the Venus Equatorial Region Revealed by Akatsuki Radio Occultation Measurements, Oral presentation, 01 Aug. 2022
  • Ando, Hiroki; Katsuyuki Noguchi; Takeshi Imamura; Hinako Onuma; Hideo Sagawa, 44th COSPAR Scientific Assembly, H2SO4 and SO2 abundances in the Venus equatorial region measured by Akatsuki radio occultation, Poster presentation, 16 Jul. 2022
  • Noguchi, K; M. Shimomura; A. Kleinboehl; D. Kass; S. Piqueux, Seventh International Workshop on the Mars Atmosphere: Modelling and Observations, Rederivation of the MGS Radio Occultation Measurements in the Martian South Polar Winter Regions Using MRO-MCS Temperature Climatology, Poster presentation, 14 Jun. 2022
  • Poster presentation, 02 Jun. 2022
  • Oral presentation, 23 May 2022
  • Oral presentation, 17 Feb. 2022
  • Oral presentation, 06 Dec. 2021
  • Takeshi Imamura; Hiroki Ando; Katsuyuki Noguchi; R. K. Choudhary; Bernd Haeusler; Martin Paetzold; Silvia Tellmann, Venus Science Conference 2021, Results from the Akatsuki radio occultation on Venus, Oral presentation, 23 Nov. 2021
  • Oral presentation, 01 Nov. 2021
  • Oral presentation, 11 Oct. 2021
  • Hiroki Ando; Takeshi Imamura; Katsuyuki Noguchi; Silvia Tellmann; Martin Paetzold; Bernd Haeusler; Sanjay Limaye; R.K. Choudhary, URSI GASS 2021, Atmospheric structure of Venus revealed by Akatsuki radio occultation measurements, Invited oral presentation, 02 Sep. 2021
  • Mao Shimomura; Katsuyuki Noguchi; Armin Kleinboehl; David Kass; Sylvain Piqueux, Mars Climate Sounder extended Science Team Meeting, CO2 supersaturation in the southern polar night, Oral presentation, 18 Aug. 2021
  • Katsuyuki Noguchi; Yuki Matsumoto; Reina Iwai; Nao Shimoji; Mayu Ueda; Armin Kleinboehl; David Kass, Mars Climate Sounder extended Science Team Meeting, Correlation among dust, ice clouds and temperature, and dust enhancement in the upper altitudes, Oral presentation, 18 Aug. 2021
  • Katsuyuki Noguchi; Hinako Onuma; Norihiko Sugimoto; Yukiko Fujisawa; Masahiro Takagi; Hiroki Ando; Takeshi Imamura, Asia Oceania Geosciences Society (AOGS) 18th Annual Meeting, Temperature fluctuations observed in the upper atmosphere of Venus, Oral presentation, 02 Aug. 2021
  • Oral presentation, 18 Feb. 2021, 18 Feb. 2021 - 18 Feb. 2021
  • Katsuyuki Noguchi; Armin Kleinboehl; David Kass; Sylvain Piqueux, 43rd COSPAR Scientific Assembly, Rederivation of the MGS radio occultation measurements in the Martian south polar winter regions using MRO-MCS temperature climatology, Oral presentation, 01 Feb. 2021, 28 Jan. 2021 - 04 Feb. 2021
  • Oral presentation, 01 Nov. 2020, 01 Nov. 2020 - 04 Nov. 2020
  • Poster presentation, 12 Jul. 2020, 12 Jul. 2020 - 16 Jul. 2020
  • 2018
  • 村田 功; 野口 克行; dreas Richter; Alexei Rozanov; John; P. Burrows, 平成29年度大気球シンポジウム集録, 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, Nov. 2017, Nov. 2017 - Nov. 2017, 筆頭
  • 2017
  • 2017
  • 2017
  • 2017
  • 2017
  • 2017
  • 2017
  • 2017
  • 2017
  • 2017
  • 2017
  • 2017
  • 2017
  • the 6th International Workshop on the Mars Atmosphere: Modelling and Observations, CO2 SUPERSATURATION BY ATMOSPHERIC WAVES IN THE MARTIAN POLAR NIGHTS, 2017
  • Asia Oceania Geosciences Society (AOGS) 14th Annual Meeting, 4D Gridding of MRO-MCS Data for Easier Analysis and Visualization, 2017
  • The 8th International DOAS Workshop, Feasibility Study for the Observation for NO2 Air Pollution Using High Spatial Resolution Mini-satellites, 2017
  • The 8th International DOAS Workshop, Measurements of stratospheric ozone and nitrogen dioxide with spectrometer type balloon-borne optical ozone sensor, 2017
  • European Planetary Science Congress (EPSC) 2017, Atmospheric CO2 supersaturation in the Martian polar nights: Role of large-scale atmospheric waves, 2017
  • European Planetary Science Congress (EPSC) 2017, Initial results of the radio occultation experiment in the Venus orbiter mission Akatsuki, 2017
  • Dec. 2016, Dec. 2016 - Dec. 2016
  • Dec. 2016, Dec. 2016 - Dec. 2016
  • 2016
  • 2016
  • 2016
  • 2016
  • 2016
  • 2016
  • 2016
  • 2016
  • Japan Geoscience Union Meeting 2016, Longitudinal dependence of CO2 supersaturation during northern winter in the Martian atmosphere, 2016
  • Sixth International Conference on Mars Polar Science and Exploration, Atmospheric CO2 supersaturation observed in the Martian polar nights, 2016
  • the 6th Geostationary Environmental Monitoring Spectrometer Science Team Meeting (GEMS-STM-6), A concept of mini-satellite of air quality observation -a possibility after the GEMS satellite-, 2016
  • 2015
  • 2015
  • 2015
  • 2015
  • 2015
  • 2015
  • 2015
  • 2015
  • 2015
  • 2015
  • 2015
  • 2015
  • 2015
  • 2015
  • 2015
  • 2015
  • Japan Geoscience Union Meeting 2015, The possibilities for life on Titan - the constraints for methanogenic bacteria with acetylene-based metabolic pathways, 2015
  • Japan Geoscience Union Meeting 2015, Interannual analyses of the longitudinal distributions of Martian water ice clouds, dust and temperature by MRO-MCS, 2015
  • Radio Science Symposium on Earth and Planetary Atmospheres, A study on the CO2 condensation in the Martian atmosphere by radio occultation, 2015
  • 2nd COSPAR Symposium, A study on the relationships among water ice clouds, dust and temperature in the Martian atmosphere by using MRO-MCS data, 2015
  • The 23rd CEReS International Symposium, A study on the Martian atmospheric environment using remote sensing data obtained by Mars orbiter missions, 2015
  • The 23rd CEReS International Symposium, New numerical model on the radiative field of Martian atmosphere and strategy of radiative field observation in Mars landing mission in the future, 2015
  • Proceedings of the ISAS Lunar and Planetary Symposium, Meteorological Observations with a Navigation Camera onboard the MELOS1 Rover, 05 Aug. 2014, 05 Aug. 2014 - 05 Aug. 2014, Institute of Space and Astronautical Science, JAXA ; [2006]-
  • 2014, 2014 - 2014
  • 2014
  • 2014
  • 2014
  • 2014
  • 2014
  • 2014
  • 2014
  • 2014
  • 2014
  • 2014
  • 2014
  • 2014
  • 2014
  • 2014
  • 2014
  • 2014
  • 2014
  • Japan Geoscience Union meeting 2014, Interannual analyses of the meridional distributions of Martian dust and clouds obtained by MRO-MCS, 2014
  • Japan Geoscience Union meeting 2014, Estimation of Martian atmospheric composition change caused by CO2 condensation and its application to radio occultation, 2014
  • Japan Geoscience Union meeting 2014, Environmental monitoring camera system for the Martian aerosols and water vapor for the Japanese Mars rover, MELOS, 2014
  • Mars Express MaRS / Venus Express VeRa / Rosetta RSI Radio Science Team Meeting, Rederivation of MGS radio occultation measurements in the polar nights region in consideration of CO2 condensation, 2014
  • Asia Oceania Geosciences Society (AOGS) 11th Annual Meeting, Proposal of the Environment Camera System Monitoring the Martian Aerosols and Water Vapor Column Density for the Japanese Mars Rover Proposal for MELOS Program, 2014
  • Asia Oceania Geosciences Society (AOGS) 11th Annual Meeting, Effect of Atmospheric Waves on CO2 Saturation in the Martian Atmosphere, 2014
  • Asia Oceania Geosciences Society (AOGS) 11th Annual Meeting, A Sensitivity Study of UV Surface Albedo for Spaceborne Tropospheric Ozone Measurements Over China, 2014
  • Intercomparison of radiative transfer models for atmospheric composition measurements, 2014
  • Abstracts Fall Meeting of the Japanese Society for Planetary Sciences, P1-24 Retrievals of temperature and pressure of the Martian atmosphere by the MGS radio occultation measurements considering mixing ratio changes, 20 Nov. 2013, 20 Nov. 2013 - 20 Nov. 2013, The Japanese Society for Planetary Sciences
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013
  • Asia Oceania Geosciences Society (AOGS) Annual Meeting, Current Status of Air Quality Missions in Japan: APOLLO and GMAP-Asia, 2013
  • Asia Oceania Geosciences Society (AOGS) Annual Meeting, The Effect of Surface BRDF of Various Land Cover Types on the Measurement of Tropospheric NO2 from a Geostationary Orbit, 2013
  • Asia Oceania Geosciences Society (AOGS) Annual Meeting, Simulation study of synergetic retrieval for tropospheric ozone with UV, TIR, and MW measurements, 2013
  • Abstracts Fall Meeting of the Japanese Society for Planetary Sciences, P1-14 CO2 supersaturation observed in the Martian atmosphere with the MGS radio occupation measurements, 24 Oct. 2012, 24 Oct. 2012 - 24 Oct. 2012, The Japanese Society for Planetary Sciences
  • 2012, 2012 - 2012
  • 2012
  • 2012
  • 2012
  • 2012
  • 2012
  • 2012
  • 2012
  • 2012
  • 2012
  • 2012
  • 2012
  • 2012
  • 2012
  • APOLLO team meeting, Current status of discussion on the UV/Visible instrumentation and preliminary feasibility study, 2012
  • Japan Geoscience Union Meeting 2012, The effect of the surface BRDF on the measurement of tropospheric NO2 from a geostationary orbit and ISS, 2012
  • European Planetary Science Congress (EPSC) 2012, Statistical analysis of CO2 supersaturation in the Martian atmosphere observed by MGS radio occultation measurements, 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
  • Land Surface Remote Sensing conference in SPIE Asia-Pacific Remote Sensing, Basic study of BRDF over Tokyo for the spaceborne measurements of atmospheric trace gases, 2012
  • American Geophysical Union (AGU) Fall Meeting 2012, CO2 supersaturation observed in the Martian lower atmosphere with Mars orbiters, 2012
  • 2011
  • 2011
  • 2011
  • 2011
  • 2011
  • Japan Geoscience Union Meeting 2011, A case study of the transport of tropospheric nitrogen dioxide from China observed from space, 2011
  • The 5th International DOAS Workshop, The effect of the surface BRDF on the measurement of tropospheric NO2 from a geostationary orbit, 2011
  • The 5th International DOAS Workshop, Quantifying the relationship between the measurement precision and specifications of a UV/visible sensor on a geostationary satellite, 2011
  • GEMS workshop, A feasibility study for GMAP-Asia and APOLLO UV-visible observations and its implications for GEMS, 2011
  • 2010
  • 2010
  • 2010
  • 2010
  • 2010
  • 2010
  • 2010
  • European Geosciences Union (EGU) General Assembly 2010, A feasibility study for the monitoring of diurnal variations of the tropospheric NO2 over Tokyo from a geostationary satellite, 2010
  • 38th COSPAR Scientific Assembly, A simulation for UV-VIS observations of tropospheric composition from a geostationary satellite over Asia, 2010
  • 38th COSPAR Scientific Assembly, A feasibility study for the monitoring of diurnal variations of the tropospheric NO2 over Tokyo from a geostationary satellite, 2010
  • International GEMS Workshop: Requirements on Science and Instrument, A simulation for UV-VIS observations of tropospheric composition from a geostationary satellite over Asia, 2010
  • The Korea/Japan collaborative meeting, A simulation for UV-VIS observations of tropospheric composition from a geostationary satellite over Asia, 2010
  • American Geophysical Union (AGU) Fall Meeting 2010, A feasibility study for the monitoring of diurnal variations of the tropospheric NO2 over Tokyo from a geostationary satellite, 2010
  • 2009
  • 2009
  • European Geosciences Union (EGU) General Assembly 2009, Comparison of tropospheric NO2 observations by GOME and ground stations over Tokyo, Japan, 2009
  • 2009 American Geophysical Union (AGU) Fall Meeting, Intercomparison of tropospheric NO2 concentration by GOME and the air-quality monitoring network in the Tokyo region, Japan, 2009
  • 2008, 2008 - 2008
  • 2008, 2008 - 2008
  • 2008, 2008 - 2008
  • 2008
  • 2008
  • 2008
  • 2008
  • 2008
  • 2008
  • 2008
  • 2008
  • 2008
  • IGAC 10th International Conference, Comparison of tropospheric NO2 from GOME and surface measurements in the Tokyo region, Japan, 2008
  • 2007, 2007 - 2007
  • 2007, 2007 - 2007
  • 2007, 2007 - 2007
  • 2007, 2007 - 2007
  • 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, 3D Visualization System Gateau for Atmospheric Science: Design Concept and Practical Evaluation, 2007
  • 2007
  • 2007
  • 2007
  • 2007
  • 2007
  • 2007
  • 2007
  • 2007
  • 2007
  • 2007
  • European Geosciences Union (EGU) General Assembly 2007, Comparison between GOME and surface measurements of tropospheric NO2 over Japan, 2007
  • Tropospheric NO2 measured by satellites (ACCENT/TROPOSAT-2 workshop), Comparison between tropospheric NO2 vertical columns by GOME and surface NO2 mixing ratio by the air-monitoring network over Japan, 2007
  • 2006, 2006 - 2006
  • 2006, 2006 - 2006
  • 2006
  • 2006
  • 2006
  • 2006
  • 2006
  • 2006
  • 2006
  • 2005, 2005 - 2005
  • 2005, 2005 - 2005
  • 2005
  • 2005
  • 2005
  • 2005
  • 2005
  • 2005
  • 2005
  • 2005
  • 2005 American Geophysical Union (AGU) Fall Meeting, Intercomparison among tropospheric ozone and nitrogen dioxide data obtained by satellite- and ground-based measurements, 2005
  • 2004, 2004 - 2004
  • 2004, 2004 - 2004
  • 2004, 2004 - 2004
  • 2004
  • 2004
  • 2004
  • Quadrennial Ozone Symposium 2004, Irreversible vertical mixing of ozone caused by inertio-gravity wave breaking in the lower stratosphere, 2004
  • Quadrennial Ozone Symposium 2004, Climatology and origin of small-scale vertical structures in stratospheric ozone, 2004
  • 2004 American Geophysical Union (AGU) Fall Meeting, Climatology and origin of small-scale vertical structures of ozone in the lower stratosphere, 2004
  • 09 Oct. 2002, 09 Oct. 2002 - 09 Oct. 2002
  • May 2002, May 2002 - May 2002
  • 19 Nov. 2001, 19 Nov. 2001 - 19 Nov. 2001
  • 19 Nov. 2001, 19 Nov. 2001 - 19 Nov. 2001
  • 10 Oct. 2001, 10 Oct. 2001 - 10 Oct. 2001
  • Abstracts Fall Meeting of the Japanese Society for Planetary Sciences, S12 Radio occultation measurements in Venus atmosphere mission, 06 Oct. 2001, 06 Oct. 2001 - 06 Oct. 2001, The Japanese Society for Planetary Sciences, In the Venus orbiter mission Planet-C, radio occupation technique will be used to obtain vertical profiles of temperature and H_2SO_4 vapor with high vertical resolution. Such information is complementary to the global data of clouds and trace gases obtained by imaging observations.
  • 08 May 2001, 08 May 2001 - 08 May 2001

Research Projects

  • 01 Apr. 2025 - 31 Mar. 2026, CJ25-15, Coinvestigator, 衛星データを用いた火星大気におけるエアロゾル輸送に関する研究, 千葉大学, 千葉大学環境リモートセンシング研究センター共同利用研究
  • 01 Apr. 2025 - 31 Mar. 2026, CJ25-16, Coinvestigator, 地球大気で確立された大気重力波解析手法の火星大気への応用とその改良, 千葉大学, 千葉大学環境リモートセンシング研究センター共同利用研究
  • 01 Apr. 2025 - 31 Mar. 2026, CJ25-12, Principal investigator, 地球惑星大気環境を観測するための衛星リモートセンシングに関する研究, 千葉大学, 千葉大学環境リモートセンシング研究センター共同利用研究
  • 基盤研究(C), Apr. 2022 - Mar. 2025, 22K03701, Principal investigator, 導出手法を改良した新しい電波掩蔽データによる火星大気の主成分凝結に関する研究, 野口 克行, 日本学術振興会, 科学研究費助成事業 基盤研究(C), 奈良女子大学, 4290000, 3300000, 990000, kaken
    対象リソースIRI
  • Grant-in-Aid for Scientific Research (B), Apr. 2020 - Mar. 2024, 20H01958, Coinvestigator, High vertical resolution observation of planetary atmospheres by radio occultation, 今村 剛; 安藤 紘基; 野口 克行; 神山 徹; 小郷原 一智; 杉山 耕一朗, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), The University of Tokyo, 17550000, 13500000, 4050000, kaken
    対象リソースIRI
  • Grant-in-Aid for Scientific Research (B), Apr. 2019 - Mar. 2023, 19H01971, Coinvestigator, 階層的数値モデルによる金星大気重力波の励起、伝播、散逸過程の解明, 杉本 憲彦; 高木 征弘; 安藤 紘基; 野口 克行; 黒田 剛史; 宮本 佳明, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Keio University, 17160000, 13200000, 3960000, 大気重力波は、運動量やエネルギーを輸送、再分配し、惑星大気において重要な働きを担う。本課題では、階層的な数値モデルを用いて、金星大気の重力波の諸過程を包括的に解明することが目標である。2020年度は、金星探査機「あかつき」および「Venus Express」の電波掩蔽観測で明らかにされた雲層下部の温度構造が、金星大気大循環モデルで整合的に再現されていたため、この成因の解析を中心に行った。また、雲層下部には惑星規模の大気重力波である赤道ケルビン波の存在が観測的に示唆されていて、それと関連した雲量変動も観測されている。そこで、金星大気大循環モデルに簡易版の雲物理過程を導入して、赤道ケルビン波と雲量の変動を調べられる枠組みの構築を目指した。さらに熱潮汐波と細かいスケールの大気重力波の相互作用を調べるために、T639L260(1920×960×260格子点)の超高解像度数値実験への拡張を行い、スピンアップ計算を繰り返した。
    赤道ケルビン波は雲層上端にもその存在が示唆されており、スーパーローテーションの風速変動に関わると考えられている。一方で、我々の金星大気大循環モデルでは、この波をこれまで再現できていない。そこで、データ同化技術を用いて、赤道ケルビン波の観測が衛星観測等で得られた際に、これを同化によって金星大気大循環モデル内に再現可能かどうかについて、観測システムシミュレーション実験を行った。その結果、高度70km付近の風速観測が6時間毎にあれば, 赤道ケルビン波が再現可能であることがわかった。本成果は、未だあかつき観測によって赤道ケルビン波が明瞭に観測された時期はないものの、仮に紫外線カメラでこれを観測することができれば、雲追跡で導出できる風速の同化によって、金星大気大循環モデル内に赤道ケルビン波を十分に再現可能であることを示唆している。, kaken
    対象リソースIRI
  • Grant-in-Aid for Scientific Research (C), Apr. 2019 - Mar. 2022, 19K03951, Principal investigator, 火星気象を特徴付ける大気主成分凝結と大気波動の相互作用の解明, 野口 克行, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Nara Women's University, 4420000, 3400000, 1020000, 今年度は、主に数値モデルによるデータ解析を実施した。研究協力者から提供された火星大気大循環モデル (MGCM)による計算結果を用いて、大気重力波によると思われる小規模な空間スケールを持つ気温擾乱に着目した。この数値モデルは、比較的波長の長い大気重力波を直接再現することが可能なほどの高い空間分解能を持つ。数値モデルで計算された気温の高度分布に対して鉛直波長4km以下のハイパスフィルタを掛けることで、気温擾乱を抽出した。この気温擾乱を大気重力波によるものとみなして、波の活動度（ポテンシャルエネルギー）を計算した。解析対象とした季節は、北半球の冬から春に相当する時期（Ls=270-300度）である。
    その結果、観測データ（米国の火星探査機マーズグローバルサーベイヤーで実施された電波掩蔽観測によるデータ）で見つかっていた高度10-20kmにおけるポテンシャルエネルギーの東西波数2の構造が、この数値モデルでも再現されていることが明らかになった。
    また、電波掩蔽観測では観測原理上、高度40km付近までしかデータが得られていないが、この数値モデルでは仕様上高度90kmまでの計算が可能である。観測データでは得られていないより高い高度領域においてもポテンシャルエネルギーの解析を行ったところ、東西波数2の構造は高度10-20kmの領域だけではなく、他の高度領域にも存在していることが示唆された。また、その高度は特徴的な緯度依存性を持っていることも示唆された。, kaken
    対象リソースIRI
  • Grant-in-Aid for Scientific Research (B), Apr. 2016 - Mar. 2019, 16H04060, Study of gravity waves in planetary atmospheres using radio occultation experiments and numerical modeling, Imamura Takeshi, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Tokyo, 14560000, 11200000, 3360000, Radio occultation observation data of Venus was analyzed by radio holography method to improve the vertical resolution, and universal existence of waves and neutral layers with vertical scales of several hundred meters were revealed. Sharp inversion layers were also found to exist at the top of high latitude convection layers. We also carried out numerical simulations of the convective layer with high vertical resolution and a wide computational domain, and reproduced the convective motion and the gravity waves excited by convection. Breaking of gravity waves is suggested to be caused by shear instability and convective instability. Furthermore, we could understand the height of breaking of gravity waves and the amplitude of gravity waves in comparison with the observational results of radio wave occultation observation., kaken
    対象リソースIRI
  • Grant-in-Aid for Scientific Research (C), Apr. 2015 - Mar. 2018, 15K05289, Estimation of vertical profiles of CO2 mixing ratio in the Martian polar nights by using radio occultation technique, Noguchi Katsuyuki; Takeshi Kuroda; Takeshi Imamura, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Nara Women's University, 4810000, 3700000, 1110000, The present study proposed a method to obtain vertical profiles of CO2 mixing ratio, which is the main component of the Martian atmosphere, by using radio occultation technique. Normally radio occultation technique obtains temperature-pressure profiles of planetary atmospheres, assuming atmospheric compositions. Our method, however, estimates CO2 mixing ratio in the polar nights, where CO2 condensates, assuming that air temperature in observed regions is CO2 saturation temperature. By using this method, we successfully obtained vertical profiles of CO2 mixing ratio in the polar nights. We also showed that atmospheric waves including stationary waves and transient waves had an important role on the occurrence of CO2 saturation in the polar nights., kaken
    対象リソースIRI
  • Grant-in-Aid for Young Scientists (B), Apr. 2012 - Mar. 2014, 24710008, Algorithm for the observations of air pollution by next generation satellites, NOGUCHI Katsuyuki, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Nara Women's University, 2340000, 1800000, 540000, The algorithm for the observations of air pollution by using next generation platforms, such as geostationary satellites and the international space station, has been developed. The dependence of the surface reflectivity on the incident and outgoing directions was considered, since the dependence is important for those platforms. The results were presented in the domestic and international conferences and published in the peer-reviewed journal, Atmospheric Measurement Techniques Discussion (AMTD)., kaken
    対象リソースIRI
  • Grant-in-Aid for Scientific Research (C), 2010 - 2012, 22540457, Observation of ozone, nitrogen dioxide, chlorine dioxide, and bromine monoxide by the optical ozonesonde with spectrometer, MURATA Isao; KASABA Yasumasa; NAKAGAWA Hiromu; FUJIWARA Hitoshi; NOGUCHI Katsuyuki, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Tohoku University, 4160000, 3200000, 960000, The purpose of this research was the validation of our new instrument that can measure NO_2, OClO, and BrO with O_3. We prepared for the balloon experiment in 2010 but quitted due to the trouble of CPU in the instrument. We checked and improved the instrument in2011 and again prepared for the balloon experiment in 2012 but no balloon launched in this year due to the unusual meteorological condition. Therefore, test measurements were performed at ground on the sunrise and culmination. We confirmed that at least the stratospheric column of NO_2 can be derived., kaken
    対象リソースIRI
  • Grant-in-Aid for Scientific Research (B), 2010 - 2012, 22310004, Development of remote sensing technique for lower tropospheric ozone by simultaneous measurement of UV and visible solar scattered light spectra, KITA Kazuyuki; IRIE Hitoshi; NOGUCHI Katsuyuki; HAYASHIDA Sachiko, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Ibaraki University, 18720000, 14400000, 4320000, A remote sensing technique to measure lower tropospheric ozone with a simultaneous measurement of UV and visible solar scattered spectra has been developed for investigating extensive surface ozone increases. Error analyses and validation measurements was conducted. Based on the surface observation, evaluation of ozone column amount from visible spectra has een succeeded with enough accuracy. The interference by surface Albedo spectra and the influence by aerosol scattering have been estimated with observational data and radiative transfer model calculations. Aircraft observations were conducted for the validation of the technique, and their data analyses are on-going now., kaken
    対象リソースIRI
  • Grant-in-Aid for Scientific Research (C), 2007 - 2008, 19540462, Study on tropospheric ozone utilizing satellite data - analysis of the effects of ozone precursors and intrusion from the stratosphere -, HAYASHIDA Sachiko; KUJI Makoto; NOGUCHI Katsuyuki, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Nara Women's University, 4550000, 3500000, 1050000, 本研究課題では、東アジアを中心に集中的に大気微量成分の衛星データ解析を行い、オゾンとその前駆物質を高度別に調べ、アジア大陸から流出する汚染空気塊の影響を調べた。オゾンについては、オゾンゾンデのデータを衛星データと平行して解析した。また、赤外観測データを駆使することで、上部対流圏・対流圏界面付近におけるオゾン高度分布を解析し、成層圏オゾンの流入と人為起源のオゾンとの切り分けを行なうことを試みた。重要なオゾン前駆物質の一つであるNO_2の影響について詳細に解析し、北京や上海といった大都市では年々の増加傾向が停止しているのに対し、郊外の新興都市で増加傾向であることを明らかにした。, kaken
    対象リソースIRI
  • 若手研究(B), 2005 - 2006, 17740312, 人工衛星による分光スペクトル観測を用いた大気成分導出アルゴリズムの開発, 野口 克行, 日本学術振興会, 科学研究費助成事業, 奈良女子大学, 2400000, 2400000, 本年度は、大気汚染物質の濃度データ解析と、その結果を受けたりトリーバルアルゴリズムの改良・開発を行った。大気汚染物質の濃度データ解析については、GOMEセンサによるオゾン、二酸化窒素データを解析した。昨年度に入手したGOMEオゾンデータの検証を、気象庁のオゾンゾンデ観測データによって行った。得られた結果は日本気象学会SOLA誌に投稿し、受理された。また、二酸化窒素データは国内の大気汚染監視局の地表観測データ及び数値モデル計算結果との比較を行った結果、定性的には季節変化が一致するなどよい結果が得られたものの、定量的には違いが見られた。また、太平洋上に二酸化窒素の濃度増大が見られる事例について、数値計算結果と比較するなどの解析を行った。
    このような濃度データ解析と平行して、特に二酸化窒素のリトリーバルアルゴリズムの改良開発に取り組んだ。地表データ・数値計算結果とGOME観測データが定量的に異なる問題については、リトリーバルの中で用いられているエアマスファクターを変更し精度の高いものに改め、実装することを目指した。データフォーマットを一致させるなどの技術的な課題をほぼクリアし、試験的に新しいアルゴリズムを用いてリトリーバルを行うことに成功した。また、海洋上のリトリーバルについては、パラメータ設定の不良など人為的な要因がないかをチェックした。その結果、観測原理的に解決が難しい対流圏量と成層圏量の分離において、当初想定していたよりも大きな不確定性が生じている可能性が明らかになった。, kaken
    対象リソースIRI
  • 基盤研究(C), Apr. 2022 - Mar. 2025, 22K03701, Principal investigator, 導出手法を改良した新しい電波掩蔽データによる火星大気の主成分凝結に関する研究, 日本学術振興会, 科学研究費助成事業 基盤研究(C)
  • 基盤研究(C), Apr. 2022 - Mar. 2025, 22K03701, Principal investigator, 導出手法を改良した新しい電波掩蔽データによる火星大気の主成分凝結に関する研究, 日本学術振興会, 科学研究費助成事業 基盤研究(C)
  • 01 Apr. 2024 - 31 Mar. 2025, CJ24-22, Principal investigator, 地球惑星大気環境を観測するための衛星リモートセンシングに関する研究, 千葉大学, 千葉大学環境リモートセンシング研究センター共同利用研究
  • 01 Apr. 2021 - 31 Mar. 2022, Principal investigator, 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, 千葉大学, 千葉大学環境リモートセンシング研究センター共同利用研究
  • 01 Apr. 2022 - 31 Mar. 2023, Principal investigator, 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, 千葉大学, 千葉大学環境リモートセンシング研究センター共同利用研究

■Ⅲ．社会連携活動実績

１．公的団体の委員等（審議会、国家試験委員、他大学評価委員，科研費審査委員等）

  • 宇宙航空研究開発機構(JAXA)宇宙科学研究所(ISAS), 宇宙理学メンバ, Jun. 2013 - Present
  • 宇宙航空研究開発機構(JAXA)宇宙科学研究所(ISAS), 宇宙理学メンバ, Jun. 2013 - Present
  • 宇宙航空研究開発機構(JAXA)宇宙科学研究所(ISAS), 宇宙理学メンバ, Jun. 2013 - Present
  • 宇宙航空研究開発機構(JAXA)宇宙科学研究所(ISAS), 宇宙理学メンバ, Jun. 2013 - Present, Government
  • 国立研究開発法人国立環境研究所, GOSAT-GW衛星システムCDR（事前説明会）有識者, Sep. 2023 - Sep. 2023, Government
  • 国立研究開発法人国立環境研究所, GOSAT-GW衛星システム詳細設計審査会有識者, Jun. 2023 - Jun. 2023, Government
  • 国立研究開発法人国立環境研究所, TANSO-３反映審査会有識者, Feb. 2023 - Feb. 2023, Government
  • 国立研究開発法人国立環境研究所, TANSO-３詳細設計審査（CDR）本審査会有識者, Feb. 2022 - Feb. 2022, Government
  • 温室効果ガス観測技術衛星３号(GOSAT-3)有識者会議, Oct. 2019 - Sep. 2021, Government