Microscale processes in the Venus atmosphere revealed by radio occultation

2014 Fiscal Year Final Research Report

• Project/Area Number: 24540482
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Space and upper atmospheric physics
• Research Institution: Japan Aerospace Exploration Agency
• Principal Investigator: IMAMURA Takeshi 独立行政法人宇宙航空研究開発機構, 宇宙科学研究所, 准教授 (40311170)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 電波掩蔽 / 電波ホログラフィ / Full Spectral Inversion / 金星大気 / 惑星大気

Outline of Final Research Achievements

In the previous radio occultation observations, geometrical optics method has been used for retrieving refractive index profiles from measured phase time series, and multipath effect and diffraction effect prevented us from obtaining detailed atmospheric structures. We applied a radio holographic analysis to radio occultation data of Venusian atmosphere to solve these problems, and successfully revealed fine structures related to gravity waves and inversion layers.

Free Research Field

惑星大気科学