Exploring the Atmosphere of MArs and VEnus with Remote Observations: A Belgium-Japan partnership (AMAVERO) 

Goal of the research

Recent successful explorations of Mars and Venus atmospheres by numerous spacecraft and ground-based telescopes have suggested their active photochemistry and dynamics on the planets. Characteristics of spatial and temporal variations of temperature, wind, and atmospheric constituents are essential to understand the photochemistry and dynamics. However, (1) "3D distributions (i.e., spatial variation + vertical profiles)" of temperature, wind, and trace gases on Mars, and (2) those at the middle atmosphere (from the cloud top to the upper atmosphere, 60-140 km) of Venus, are still poorly understood. In this project, we study those aspects by collecting unique observational datasets from Belgium and Japan. Belgian side provides the data taken by European Mars orbiter Mars Express (MEx) and Trace Gas Orbiter (TGO), and Venus Orbiter Venus Express (VEx). Japanese side provides the data taken by ground-based and space-borne telescopes and Japanese Venus Orbiter Akatsuki. Moreover, we share tools to analyze the observational datasets, and develop the numerical models of the atmospheres to interpret the observational results.

More specifically, the scientific goals of the research in this collaborative study are as follows:
1. Retrieval of CO vertical profiles on Mars using MEx/PFS and MEx/OMGEA data
2. Verification of the presence of CH4 on Mars using SOFIA/EXES data
3. Constraint of water cycle on Mars by mapping of HDO/H2O ratio from SOFIA/EXES data
4. Constraint of CO2 cycle on Mars by mapping of CO2 isotopes from SOFIA/EXES data
5. Retrieval of CO, CH4, HDO/H2O, and CO2 isotopes vertical profiles on Mars using TGO/NOMAD data
6. Sensitive search of trace gases on Mars by joint observations between TGO/NOMAD and T60/MILAHI
7. High-resolution global mapping of thermal structure and wind field by ALMA data
8. Co-development of GCMs for Mars using GEM-Mars and DRMATIC-MGCM
9. Understanding of photochemistry and dynamics on Mars by comparison between observational results and GCM outputs
10. Constrain of dynamic at 65-95 km altitude on Venus using the temperature profiles measured by VEx/SOIR and T60/MILAHI
11. Distinction of the effects due to space and local time on HCl variations at 70-90 km on Venus using VEx/SOIR and ALMA data
12. Distinction of the effects due to space and local time on SO2 variations at 70-90 km on Venus using VEx/SOIR and ALMA data
13. Understanding of atmospheric dynamics around cloud top altitude using Akatsuki/LIR and SUBARU/COMICS data

Period

April1 2017 to March 31, 2019

InIntruments and workplan

Click the tables to get expanded.

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Meeting

To be updated.

Data base/Tools

To be updated.

Member

Pierre-Francois Coheur Université Libre de Bruxelles・Assoc. Professor
Ann Carine Vandaele Belgian Institute for Space Aeronomy (IASB)・Unit Head
Shohei Aoki Belgian Institute for Space Aeronomy (IASB)・PD researcher
Sophie Bauduin Universite Libre de Bruxelles (ULB)・PD researcher
Severine Robert Belgian Institute for Space Aeronomy (IASB)・PD researcher
Valerie Wilquet Belgian Institute for Space Aeronomy (IASB)・Staff researcher
Arnaud Mahieux Belgian Institute for Space Aeronomy (IASB)・PD Researcher
Frank Daerden Belgian Institute for Space Aeronomy (IASB)・Staff researcher
Lori Neary Belgian Institute for Space Aeronomy (IASB)・PD researcher
Sebastien Viscardy Belgian Institute for Space Aeronomy (IASB)・PD researcher
Yasumasa Kasaba Tohoku University・Professor
Hiromu Nakagawa Tohoku University・Assist. Professor
Takeshi Imamura University of Tokyo・Assist. Professor
Isao Murata Tohoku University・Assoc. Professor
Takeshi Kuroda NICT・Senior Researcher
Yasuko Kasai NICT・Executive Researcher, Professor
Atsushi Yamazaki JAXA/ISAS・Assist. Professor
Takao M. Sato JAXA/ISAS・PD Researcher
Hideo Sagawa Kyoto Sango University・Assoc. Professor
Hiroyuki Maesawa Osaka Prefecture University・Assoc. Professor
Makoto Taguchi Rikkyo University・Professor

Publication

To be updated.