Japan Geoscience Union Meeting 2015

Presentation information

International Session (Oral)

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

[A-CG09] Satellite Earth Environment Observation

Wed. May 27, 2015 11:00 AM - 12:45 PM 301B (3F)

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), Nobuhiro Takahashi(National Institute of Information and Communications Technology), 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), Tatsuya Yokota(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(Kyushu University), Chair:Misako Kachi(Earth Observation Research Center, Japan Aerospace Exploration Agency)

11:00 AM - 11:15 AM

[ACG09-07] Prospect of future geostationary satellite observations for numerical weather prediction


Keywords:numerical weather prediction, data assimilation, geostationary satellite, sounder

The revolutionary meteorological geostationary satellite Himawari-8 was launched in October 2014. The operation is planned to start in July 2015. Advanced Himawari Imager (AHI) on Himawari-8 significantly enhances spectral, spatial, and temporal measurement capability. It enables us to make detailed observation with three visible bands with 500 m or 1 km resolution and 13 infra-red bands with 2 km resolution. Furthermore imagery scanning is performed every 2.5 minutes around Japan and every 10 minutes for the full disk. Furthermore rapidly scanning imagery is produced every 2.5 minutes around Japan and every 10 minutes for the full disk. These improved functions are useful for monitoring meteorological disaster and for production of initial fields for numerical weather prediction. Among them, the highly frequent imagery had never been achieved by any other space-borne imagers and is expected to give us new knowledge that is socially and scientifically beneficial. For example, the research is under way on assimilating the rapid scan data of Himwari-8 together with ground-based radar data to accurately predict rapidly developing convective clouds and precipitation.
Even the enhanced function of Hiwamari-8, however, does not meet all of the keen requirements of weather forecasters and data assimilation community. AHI hardly makes measurements under clouds and about vertical temperature and humidity profiles. Furthermore there is an increasing need for frequent measurements of atmospheric composition and lightning. Good candidates to meet those requirements are microwave radiometers, hyperspectral infra-red sounders, ultra-violet sensors and optical lightening mappers onboard future geostationary satellites.
We will discuss the benefit of these new instruments on geostationary satellites, especially from viewpoint of the numerical weather prediction and data assimilation.
This study is partially supported by CREST, JST.