Study of Venusian atmosphere based on ground-based spectroscopy

2014 Fiscal Year Final Research Report

• Project/Area Number: 21540460
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Space and upper atmospheric physics
• Research Institution: The University of Tokyo
• Principal Investigator: IWAGAMI Naomoto 東京大学, 理学(系)研究科(研究院), 教授 (30143374)
• Project Period (FY): 2009-04-01 – 2015-03-31
• Keywords: 金星 / 赤外分光

Outline of Final Research Achievements

To clear up riddles of the Venusian atmosphere, we performed ground-based IR spectroscopic observations. The largest dynamical issue is the “Super Rotation” of the atmosphere. The atmosphere is rotating 60 times faster than the solid body. By picking up atmospheric waves from spectra, we tried to understand the acceleration mechanism of the Super Rotation. The largest chemical issue is “Stability of the CO2 atmosphere”. The process for CO2 to be kept at 96% has not been understood. By using spectroscopic observations, we measured HCl and CO abundances, and then investigated catalytic reaction cycles to reproduce CO2.

Free Research Field

惑星大気化学物理