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RESEARCH WELCOME ABOUT US ENTRANCE EXAM HISTORY WORKS Publications Doctoral Thesis Master Thesis Bachelor research ACCESS MemberList2024 OUR GROUP: STPP PAT PPARC JAPANESE RESEARCH WELCOME     ABOUT US     ENTRANCE EXAM     HISTORY WORKS     Publications     Doctoral Thesis     Master Thesis     Bachelor research ACCESS MemberList2024 RESEARCH WELCOME ABOUT US ENTRANCE EXAM HISTORY WORKS Publications Doctoral Thesis Master Thesis Bachelor research ACCESS MemberList2024 MMX/MIRS Handover! 2024-04-16 2024 papers 2024-03-11 MIRS/MMX movie!! 2024-02-19 Press release: Atmospheric formaldehyde production on early Mars leading to a potential formation of bio-important molecules 2024-02-14 2023 papers 2023-11-29 【大学院入試説明会について】 地球物理学専攻の大学院入試説明会をオンラインで2024年3月4日（月）午後1時より開催いたします. 参加を希望される方は, 事前申し込みを以下のフォーム　https://forms.gle/wvSxBd2GKstHpVW29からお申し込み下さい. 詳しくは専攻の大学院入試説明会の頁をご覧ください. Welcome 進学希望の方へ Research 研究紹介 LAB MENBER ラボの面々 Towards a comparative and systematic understanding of the variability and evolution of planetary atmospheres We are exploring the scientific principles of the variability and evolution of planetary atmospheres as well as exploring the unknown for human beings on planets including the Earth. Research is the pursuit of the unseen and making possible of what was impossible. We are looking forward to your participation with a strong will to challenge the unknown, with flexible ideas and creativity.　(Professor Naoki Terada) LATEST NEWS NEWS REPORT PUBLICATIONS MMX/MIRS Handover! We have been developing MIRS, an infrared spectrometer for the Mars Moon eXploration (MMX) mission to be launched in two years, in cooperation with France. On April 5, the handover was successfully completed to Mitsubishi Electric Corporation (MELCO), which manufactures the main body of the spacecraft. This is a very important event for the team members. For this team, which came late to the project from other instrument teams, it is very impressive that we have made it this far in only four years. We are proud to be a part of such a great team. Of course, there is... News 2024-04-16 2024 papers Kamada, A., T. Kuroda, N. Terada, M. Kobayashi, H. Nakagawa, H. Miyamoto (2024). Modeling 4.3 billion years of water history of Phobos. Icarus, 410, 115916. https://doi.org/10.1016/j.icarus.2023.115916 Koyama, S., A. Kamada, Y. Furukawa, N. Terada, Y. Nakamura, T. Yoshida, T. Kuroda, A. C. Vandaele (2024). Atmospheric formaldehyde production on early Mars leading to a potential formation of bio-important molecules. Scientific Reports, 14, 2397. https://doi.org/10.1038/s41598-024-52718-9 Karyu, H., T. Kuroda, T. Imamura, N. Terada, A. C. Vandaele, A. Mahieux, and S. Viscardy (2024). One-dimensional Microphysics Model of Venusian Clouds from 40 to 100 km: Impact of the Middle-atmosphere Eddy Transport and SOIR Temperature Profile on the... Papers 2024-03-11 MIRS/MMX movie!! News 2024-02-19 Press release: Atmospheric formaldehyde production on early Mars leading to a potential formation of bio-important molecules Figure . Conceptual diagram of the process by which formaldehyde (H2CO) is formed in the atmosphere on ancient, warm Mars and converted into the material molecules of life in the ocean (©Shungo Koyama).   A research group led by Shungo Koyama, a PhD student, and Prof. Naoki Terada in this laboratory, estimated the amount of formaldehyde produced in the ancient Martian atmosphere using a photochemical model of the atmosphere, and showed that formaldehyde was continuously produced in the warm period of ancient Mars. The results of this study suggest that sugar, a material molecule of life represented by ribose, one... News Papers 2024-02-14 2023 papers Mason, J., M. R. Patel, M. Pajola, E. D. Cloutis, J. Alday, K. S. Olsen, C. Marriner, J. A. Holmes, G. Sellers, N. Thomas, M. Almeida, M. Read, H. Nakagawa, I. R. Thomas, B. Ristic, Y. Willame, C. Depiesse, F. Daerden, A. C. Vandaele, J. J. Lopez-Moreno, and G. Bellucci (2023). Ultraviolet and visible reflectance spectra of Phobos and Deimos as measured by the ExoMars-TGO/NOMAD-UVIS spectrometer. Journal of Geophysical Research: Planets, 128, e2023JE008002. https://doi.org/10.1029/2023JE008002 Nakamura, Y., F. Leblanc, N. Terada, S. Hiruba, I. Murata, H. Nakagawa, S. Sakai, S. Aoki, A. Piccialli, Y. Willame, L. Neary, A. C. Vandaele, K.... Papers 2023-11-29 the Tohoku University School of Science Guide 2024 The meeting of the Mars Atmosphere Modeling Team led by Assistant Professor Kuroda (presented by M2 Mr. Kobayashi) graced the cover of the Tohoku University School of Science Guide 2024 (for students admitted in the 2024 academic year). Please take a look! Tohoku University School of Science Guide 2024 News 2023-06-16 ESA Press Release &＃8220;Unusual carbon balance at Mars explained by sunlight, finds ExoMars&＃8221; A research team led by Professor Shohei Aoki of the Department of Complex Science and Engineering, Graduate School of Frontier Sciences at the University of Tokyo and Project Researcher Tatsuya Yoshida of this laboratory has revealed that carbon monoxide in the Martian atmosphere is low in carbon-13*1 using observation data from the European Mars Explorer ExoMars Trace Gas Orbiter This is the main component of the Martian atmosphere. This is thought to be because carbon 12 is more selectively destroyed when carbon dioxide, the main component of the Martian atmosphere, is decomposed into carbon monoxide by solar radiation. Organic matter... Papers 2023-06-16 Observation of Carbon Isotope Ratios in CO in the Martian Middle Atmosphere Today, Mars has 0.006 atm thin atmosphere, on the other hand, 4 billion years ago it had ticker atmosphere, with the pressure of over 5 atm. (Kurokawa et al., 2017).   &＃8221; Where and how was the ancient thick Martian atmosphere lost? &＃8220; and &＃8221; What is it like today ? &＃8220; are the important topics in the Martian research.   The ratios of isotopes are considered significant parameters in comprehending the indications of atmospheric evolution and circulation, as they change only by limited processes.   The current Martian atmosphere consists mostly of CO2, accounting for over 95%, and the... Research 2023-05-12 Event!! Gathering Edible Wild Plants April 29, 2023 We went to &＃8220;Planetospheric Zao Observatory&＃8221; to pick wild vegetables and have a barbecue with all the members of the Department of Geophysics, C region.   Under a blue sky, we are surrounded by nature and pick wild vegetables, DSC_1150 ate the wild vegetables as tempura, had a barbecue and enjoyed ourselves a lot.   Finally, we took a group photo. In fact, this event has not been held due to the covid in almost 4 years. We are happy to see the return of this wonderful event. Everyone was full of smiles and it was a... News 2023-05-12 Mars Aurora (*top picture of &＃8220;Earth&＃8221; aurorae taken by Prof. Hitoshi Fujiwara at Svalbard islands) Fig1. Diffuse aurora on Mars to cover whole nightside disk when the solar energetic particle (SEP) encountering on Mars at the (left) start and (right) peak of the September 2017 [Schneider et al., GRL, 2018]. Have you ever seen the Martian aurora? The U.S. Mars MAVEN spacecraft recently discovered Mars&＃8217; unique aurora covering the entire night side of the planet (Schneider et al., GRL, 2018), and the latest Arab Mars EMM spacecraft has discovered many more types of Mars aurora (Lillis et al., GRL, 2022). Auroral images... Research 2023-04-26 MMX/MIRS Handover! We have been developing MIRS, an infrared spectrometer for the Mars Moon eXploration (MMX) mission to be launched in two years, in cooperation with France. On April 5, the handover was successfully completed to Mitsubishi Electric Corporation (MELCO), which manufactures the main body of the spacecraft. This is a very important event for the team members. For this team, which came late to the project from other instrument teams, it is very impressive that we have made it this far in only four years. We are proud to be a part of such a great team. Of course, there is... News 2024-04-16 MIRS/MMX movie!! News 2024-02-19 Press release: Atmospheric formaldehyde production on early Mars leading to a potential formation of bio-important molecules Figure . Conceptual diagram of the process by which formaldehyde (H2CO) is formed in the atmosphere on ancient, warm Mars and converted into the material molecules of life in the ocean (©Shungo Koyama).   A research group led by Shungo Koyama, a PhD student, and Prof. Naoki Terada in this laboratory, estimated the amount of formaldehyde produced in the ancient Martian atmosphere using a photochemical model of the atmosphere, and showed that formaldehyde was continuously produced in the warm period of ancient Mars. The results of this study suggest that sugar, a material molecule of life represented by ribose, one... News Papers 2024-02-14 the Tohoku University School of Science Guide 2024 The meeting of the Mars Atmosphere Modeling Team led by Assistant Professor Kuroda (presented by M2 Mr. Kobayashi) graced the cover of the Tohoku University School of Science Guide 2024 (for students admitted in the 2024 academic year). Please take a look! Tohoku University School of Science Guide 2024 News 2023-06-16 Event!! Gathering Edible Wild Plants April 29, 2023 We went to &＃8220;Planetospheric Zao Observatory&＃8221; to pick wild vegetables and have a barbecue with all the members of the Department of Geophysics, C region.   Under a blue sky, we are surrounded by nature and pick wild vegetables, DSC_1150 ate the wild vegetables as tempura, had a barbecue and enjoyed ourselves a lot.   Finally, we took a group photo. In fact, this event has not been held due to the covid in almost 4 years. We are happy to see the return of this wonderful event. Everyone was full of smiles and it was a... News 2023-05-12 Hanami Party! Cherry blossom viewing was held! It was super windy that day 😀 News 2023-04-14 Ingenuity succeeds in first flight Credits: NASA/JPL-Caltech   Today I witnessed history. Now you can too. You’re watching video of the #MarsHelicopter’s first flight – a true “Wright brothers” moment. Watch it all unfold:✅ Spin-up✅ Takeoff✅ Hover✅ Turn✅ Landing Read more: https://t.co/FIsf5RfHGj pic.twitter.com/hucsBY2RDE — NASA&＃39;s Perseverance Mars Rover (@NASAPersevere) April 19, 2021 News 2021-04-20 Congratulations! A farewell party was held in February. Congratulations! We hope we can meet again:) News 2021-03-02 Univ. Tokyo | First discovery of a band of hydrogen cyanide, lying at Neptune&＃8217;s equator See brilliant news related to Neptune observation by our colleagues in Univ. Tokyo and Kyoto Sangyo Univ.: https://www.u-tokyo.ac.jp/focus/ja/press/z0310_00023.html News 2020-10-26 NASA DuAxel rover copyright NASA JPL https://www.cnet.com/news/nasa-prototype-rover-can-split-in-two-could-climb-down-deep-mars-craters/ News 2020-10-20 2024 papers Kamada, A., T. Kuroda, N. Terada, M. Kobayashi, H. Nakagawa, H. Miyamoto (2024). Modeling 4.3 billion years of water history of Phobos. Icarus, 410, 115916. https://doi.org/10.1016/j.icarus.2023.115916 Koyama, S., A. Kamada, Y. Furukawa, N. Terada, Y. Nakamura, T. Yoshida, T. Kuroda, A. C. Vandaele (2024). Atmospheric formaldehyde production on early Mars leading to a potential formation of bio-important molecules. Scientific Reports, 14, 2397. https://doi.org/10.1038/s41598-024-52718-9 Karyu, H., T. Kuroda, T. Imamura, N. Terada, A. C. Vandaele, A. Mahieux, and S. Viscardy (2024). One-dimensional Microphysics Model of Venusian Clouds from 40 to 100 km: Impact of the Middle-atmosphere Eddy Transport and SOIR Temperature Profile on the... Papers 2024-03-11 Press release: Atmospheric formaldehyde production on early Mars leading to a potential formation of bio-important molecules Figure . Conceptual diagram of the process by which formaldehyde (H2CO) is formed in the atmosphere on ancient, warm Mars and converted into the material molecules of life in the ocean (©Shungo Koyama).   A research group led by Shungo Koyama, a PhD student, and Prof. Naoki Terada in this laboratory, estimated the amount of formaldehyde produced in the ancient Martian atmosphere using a photochemical model of the atmosphere, and showed that formaldehyde was continuously produced in the warm period of ancient Mars. The results of this study suggest that sugar, a material molecule of life represented by ribose, one... News Papers 2024-02-14 2023 papers Mason, J., M. R. Patel, M. Pajola, E. D. Cloutis, J. Alday, K. S. Olsen, C. Marriner, J. A. Holmes, G. Sellers, N. Thomas, M. Almeida, M. Read, H. Nakagawa, I. R. Thomas, B. Ristic, Y. Willame, C. Depiesse, F. Daerden, A. C. Vandaele, J. J. Lopez-Moreno, and G. Bellucci (2023). Ultraviolet and visible reflectance spectra of Phobos and Deimos as measured by the ExoMars-TGO/NOMAD-UVIS spectrometer. Journal of Geophysical Research: Planets, 128, e2023JE008002. https://doi.org/10.1029/2023JE008002 Nakamura, Y., F. Leblanc, N. Terada, S. Hiruba, I. Murata, H. Nakagawa, S. Sakai, S. Aoki, A. Piccialli, Y. Willame, L. Neary, A. C. Vandaele, K.... Papers 2023-11-29 ESA Press Release &＃8220;Unusual carbon balance at Mars explained by sunlight, finds ExoMars&＃8221; A research team led by Professor Shohei Aoki of the Department of Complex Science and Engineering, Graduate School of Frontier Sciences at the University of Tokyo and Project Researcher Tatsuya Yoshida of this laboratory has revealed that carbon monoxide in the Martian atmosphere is low in carbon-13*1 using observation data from the European Mars Explorer ExoMars Trace Gas Orbiter This is the main component of the Martian atmosphere. This is thought to be because carbon 12 is more selectively destroyed when carbon dioxide, the main component of the Martian atmosphere, is decomposed into carbon monoxide by solar radiation. Organic matter... Papers 2023-06-16 2022 papers Yoshida, T., N. Terada, M. Ikoma, and K. Kuramoto (2022). Less effective hydrodynamic escape of H2-H2O atmospheres on terrestrial planets orbiting pre-main sequence M dwarfs. The Astrophysical Journal, 934, 137(11pp). https://doi.org/10.3847/1538-4357/ac7be7 Nakayama, A., M. Ikoma, and N. Terada (2022). Survival of Terrestrial N2-O2 Atmospheres in Violent XUV Environments through Efficient Atomic Line Radiative Cooling. The Astrophysical Journal, 937, 72(18pp). https://doi.org/10.3847/1538-4357/ac86ca Kamada, A., T. Kuroda, T. Kodama, Y. Kasaba, and N. Terada (2022). Evolution of ice sheets on early Mars with subglacial river systems. Icarus, 385, 115117. https://doi.org/10.1016/j.icarus.2022.115117 Masunaga, K., N. Terada, N. Yoshida, Y. Nakamura, T. Kuroda, K. Yoshioka, Y.... Papers 2022-11-24 2021 papers Yoshida, N., N. Terada, H. Nakagawa, D. A. Brain, S. Sakai, Y. Nakamura, M. Benna, and K. Masunaga (2021). Seasonal and dust-related variations in the dayside thermospheric and ionospheric compositions of Mars observed by MAVEN/NGIMS. J. Geophys. Res. Planets, 126, e2021JE006926. https://doi.org/10.1029/2021JE006926 Kamada, A., T. Kuroda, Y. Kasaba, N. Terada, and H. Nakagawa (2021). Global climate and river transport simulations of early Mars around the Noachian and Hesperian boundary. Icarus, 368, 114618. https://doi.org/10.1016/j.icarus.2021.114618 Sugimoto, N., Y. Fujisawa, H. Kashimura, K. Noguchi, T. Kuroda, M. Takagi, and Y.-Y. Hayashi (2021). Generation of gravity waves from thermal tides in the Venus atmosphere. Nature Communications,... Papers 2021-02-24 2020 papers Yoshida, N., H. Nakagawa, N. Terada, J. S. Evans, N. M. Schneider, S. K. Jain, T. Imamura, J.-Y. Chaufray, H. Fujiwara, J. Deighan, and B. M. Jakosky (2020), Seasonal and latitudinal variations of dayside N2/CO2 ratio in the Martian thermosphere derived from MAVEN/IUVS observations, J. Geophys. Res. Planets, 125, https://doi.org/10.1029/2020JE006378. Nakagawa, H., A. Yamazaki, K. Enya, N. Fujishiro, N. Terada, and K. Seki (2020) Design for stray-light reduction to a Martian ionospheric imager, Applied Optics, 59, 32, https://doi.org/10.1364/AO.401523. Kuroda, T., A.S. Medvedev and E. Yiğit (2020), Gravity Wave Activity in the Atmosphere of Mars During the 2018 Global Dust Storm: Simulations... Papers 2020-11-03 2019 papers Aoki, S., Vandaele, A. C., Daerden, F., Villanueva, G. L., Liuzzi, G., Thomas, I. R., Erwin, J. T., Trompet, L., Robert, S., Neary, L., Viscardy, S., Clancy, R. T., M. D. Smith, M. A. Lopez-Valverde, Hill, B., Ristic, B., Patel, M. R., Bellucci, G., J.-J. Lopez-Moreno, and the NOMAD team (2019) Water vapor vertical profiles on Mars in dust storms observed by TGO/NOMAD, J. Geophys. Res., 124, 3482-3497, https://doi.org/10.1029/2019JE006109. Ishi, D., K. Ishikawa, M. Numazawa, Y. Miyoshi, N. Terada, K. Mitsuda, T. Ohashi, and Y. Ezoe (2019), Suzaku detection of enigmatic geocoronal solar wind charge exchange event associated with coronal... Papers 2020-10-30 2018 papers O. Korablev, A. C. Vandaele, F. Montmessin, A. A. Fedorova, A. Trokhimovskiy, F. Forget, F. Lefèvre, F. Daerden, I. R. Thomas, L. Trompet, J. T. Erwin, S. Aoki, S. Robert, L. Neary, S. Viscardy, A. V. Grigoriev, N. I. Ignatiev, A. Shakun, A. Patrakeev, D. A. Belyaev, J.-L. Bertaux, K. S. Olsen, L. Baggio, J. Alday, Y. S. Ivanov, B. Ristic, J. Mason, Y. Willame, C. Depiesse, L. Hetey, S. Berkenbosch, R. Clariquin, C. Queirolo, B. Beeckman, E. Neefs, M. R. Patel, G. Bellucci, J.-J. López-Moreno, C. F. Wilson, G. Etiope, L. Zelenyi, H. Svedhem, J. L. Vago, and The... Papers 2020-10-29 2017 papers Bader, W., B. Bovy, S. Conway, K. Strong, D. Smale, A. J. Turner, T. Blumenstock, C. Boone, M. C. Coen, A. Coulon, O. Garcia, D. W. T. Griffith, F. Hase, P. Hausmann, N. Jones, P. Krummel, I. Murata, I. Morino, H. Nakajima, S. O&＃8217;Doherty, C. Paton-Walsh, J. Robinson, R. Sandrin, M. Schneider, C. Servais, R. Sussmann and E. Mahieu, The recent increase of atmospheric methane from 10 years of ground-based NDACC FTIR observations since 2005, Atmos. Chem. Phys., 17, 2255-2277, doi:10.5194/acp-17-2255-2017, 2017. Fletcher, L.N.; Orton, G.S.; Sinclair, J.A.; Donnelly, P.; Melin, H.; Rogers, J.H.; Greathouse, T.K.; Kasaba, Y.; Fujiyoshi, T.;... 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