Japan Geoscience Union Meeting 2015

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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)

11:15 AM - 11:30 AM

[ACG09-08] A New Satellite System for Observing Global Weather and Water from Geostationary Orbit

Takashi NAKAJIMA1, *Hirohiko MASUNAGA2, Keiji IMAOKA3, Tomoo USHIO4 (1.Tokai University, 2.Nagoya University, 3.JAXA, 4.Osaka University)

Keywords:Weather, Water, Geostationary Orbit, Satellite Observation

We propose a future earth satellite system for observing global weather and water, namely, a geostationary satellite equipped with i) an infrared hyperspectral sounder, ii) a microwave sounder, iii) a microwave imager, and iv) a visible-to-infrared imaging spectroradiometer. The goal of this satellite is to monitor and reveal the mechanism of continuous weather transitions from clear sky to cloud and from cloud to precipitation. Since the satellite is equipped with passive sensors covering the visible to microwave regions, it can observe atmospheric aerosols, clouds, water vapor, and temperature. Primary observation targets are temperature profile, water vapor profile, precipitable water, liquid water path of clouds, optical thickness of aerosols and clouds, cloud top temperature, and precipitation. One of the features of this system is that it allows very high-frequency full-disk observation. The target temporal observation interval is 10 min, so we name the proposed satellite Weather and Water Watch, Delta Time 10 (WWW-DT10). There remain some technical challenges, such as developing a very large microwave antenna and a full-disk scanning mechanism for microwave sensors. This system will contribute to monitoring natural disasters such as torrential rains, and also contribute to mitigating uncertainties in global model simulations by assimilating its data into the models. We will describe this system in this presentation.