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Proceedings Paper

GPM science status in Japan
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Paper Abstract

The Global Precipitation Measurement (GPM) is a successor to the Tropical Rainfall Measuring Mission (TRMM) which has opened a new era for precipitation system measurement from space. The scope of GPM is much wider than that of TRMM. GPM will provide three hourly precipitation observation over the globe, that is, much higher temporal resolution with wider coverage than TRMM. Current precipitation measurement is far from enough for the water resources management which requires very high spatial and temporal resolution. The three hourly global precipitation observation with GPM which will be attained by international collaboration with microwave radiometers will greatly contribute not only to the precipitation sciences but also to real-world applications. GPM consists of a core satellite and constellation satellites (Fig. 1). The GPM core satellite will be equipped with a dual-wavelength radar (DPR) and a microwave radiometer, and will work to provide reference standard for the GPM constellation radiometers. Development of DPR, the key instrument, has already been completed and delivered to NASA by JAXA. Ground measurements of precipitation using newly developed Ka-radar system for DPR algorithm development are undergoing. The rain retrieval algorithms are being developed with close collaboration with NASA.

Paper Details

Date Published: 9 November 2012
PDF: 6 pages
Proc. SPIE 8528, Earth Observing Missions and Sensors: Development, Implementation, and Characterization II, 85281B (9 November 2012); doi: 10.1117/12.977256
Show Author Affiliations
Kenji Nakamura, Nagoya Univ. (Japan)
Riko Oki, Japan Aerospace Exploration Agency (Japan)
Toshio Iguchi, National Institute of Information and Communications Technology (Japan)


Published in SPIE Proceedings Vol. 8528:
Earth Observing Missions and Sensors: Development, Implementation, and Characterization II
Haruhisa Shimoda; Xiaoxiong Xiong; Changyong Cao; Xingfa Gu; Choen Kim; A. S. Kiran Kumar, Editor(s)

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