JpGU-AGU Joint Meeting 2017

Presentation information

[EE] Poster

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

[A-CG46] [EE] Satellite Earth Environment Observation / Satellite Based Remote Sensing of Weather, Climate, and Environment

Sat. May 20, 2017 10:45 AM - 12:15 PM Poster Hall (International Exhibition Hall HALL7)

convener:Riko Oki(Japan Aerospace Exploration Agency), Allen A Huang(University of Wisconsin Madison), Gail Skofronick Jackson(NASA Goddard Space Flight Center), Yoshiaki HONDA(Center for Environmental Remote Sensing, Chiba University), Paul Chang(NOAA College Park)

[ACG46-P12] GSMaP RIKEN Nowcast (GSMaP_RNC): an overview

*Shigenori Otsuka1, Shunji Kotsuki1, Takemasa Miyoshi1 (1.RIKEN Advanced Institute for Computational Science)

Keywords:GSMaP, nowcast, data assimilation

The Japan Aerospace Exploration Agency (JAXA)’s Global Satellite Mapping of Precipitation (GSMaP) provides hourly precipitation estimates over the world except the polar regions. The near-real-time product (GSMaP_NRT) is distributed about four hours after the nominal observation time, whereas the real-time estimate (GSMaP_NOW) is uploaded 30 minutes after the observation time. However, for disaster prevention, short term forecast will add value if available. Otsuka et al. (2016) developed a GSMaP nowcasting system based on space-time extrapolation. The system employs the cross-correlation method to estimate motion vectors of precipitation features, as well as an ensemble Kalman filter to better estimate motion vectors. The system is running stably for more than a year. This year, RIKEN will make the real-time nowcasting products open to public (GSMaP RIKEN Nowcast, GSMaP_RNC). This presentation will provide an overview of the system design and the latest status.

Otsuka, S., S. Kotsuki, and T. Miyoshi, 2016: Wea. Forecasting, 31, 1409-1416.