Japan Geoscience Union Meeting 2016

Presentation information

International Session (Poster)

Symbol A (Atmospheric and Hydrospheric Sciences) » A-CG Complex & General

[A-CG10] Earth and Planetary satellite observation projects Part II: Satellite Earth Environment Observation

Mon. May 23, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Riko Oki(Japan Aerospace Exploration Agency), Tadahiro Hayasaka(Graduate School of Science, Tohoku University), Kaoru Sato(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Masaki Satoh(Atmosphere and Ocean Research Institute, The University of Tokyo), Yoshiaki HONDA(Center for Environmental Remote Sensing, Chiba University), Kenlo Nasahara(Faculty of Life and Environmental Sciences, University of Tsukuba), Takashi Nakajima(Tokai University, School of Information Science & Technology, Dept. of Human & Information Science), Taikan Oki(Institute of Industrial Science, The University of Tokyo), Tsuneo Matsunaga(Center for Environmental Measurement and Analysis, National Institute for Environmental Studies), Yukari Takayabu(Atmosphere and Ocean Research Institute, the University of Tokyo), Hiroshi Murakami(Earth Observation Research Center, Japan Aerospace Exploration Agency), Hajime Okamoto(Kyusyu University), Gail Skofronick Jackson(NASA Goddard Space Flight Center), Paul Chang(NOAA College Park), David Crisp(Jet Propulsion Laboratory, California Institute of Technology)

5:15 PM - 6:30 PM

[ACG10-P09] Applied FORMOSAT-3/COSMIC on observing atmospheric temperature changes caused by volcanic eruptions

*Chun-Chieh Hsiao1, Jann-Yenq Liu2, Hsin I Lai1, Yi Cheng Chiu, Shiann-Jeng Yu1, Guey-Shin Chang1 (1.National Space Organization, 2.Graduate Institute of Space Science, National Central University)

Keywords:FORMOSAT-3/COSMIC, volcano

Volcanic eruptions are often along with fiery magma, hot dense gases and powerful explosive energy. Those materials injected into atmosphere might cool tropospheric temperature and warm the temperature of bottom of stratosphere but sometimes the phenomenon was exactly opposite or mixture. This study focused on 8 volcanic eruptions, the explosive indexes of which were 4 during 2008 to 2011 and analyzed the temperature-related data from radio occultation observations of FORMOSAT-3/COSMIC (F3/C). It individually investigated the temporal latitude-altitude and longitude-altitude variances atmospheric temperatures from northeastern, northwestern, southeastern and southwestern of volcanos before and after the eruptions. This study also observed the image from Moderate resolution Imaging Spectroradiometer (MODIS) on NASA terra satellite to see where the volcanic plum extended. Results apparently show that 3 events had cooling troposphere and warming bottom of stratosphere and 2 events were just the opposite. One of the rest events was mixture case and the other one of the rest was without apparent variances in temperature. Cooling troposphere and warming bottom of stratosphere caused by stratospheric aerosols that reduced sunlight reaching troposphere and absorbed radiation at the bottom of stratosphere. The consequence opposite to above was caused by that volcanos erupted hot and high density gases into troposphere and adiabatic expansion happened during the top of troposphere and bottom of stratosphere. Moreover, in mixture case, area with more volcanic ash showed decreasing temperature in the troposphere and increasing temperature at the bottom of stratosphere. Area with less volcanic ash showed increasing temperature in the troposphere and decreasing temperature at the bottom of stratosphere.