JpGU-AGU Joint Meeting 2017

講演情報

印刷

[EE] ポスター発表

セッション記号 A (大気水圏科学) » A-CG 大気水圏科学複合領域・一般

[A-CG46] [EE] 衛星による地球環境観測

2017年5月20日(土) 10:45 〜 12:15 ポスター会場 (国際展示場 7ホール)

コンビーナ:沖 理子(宇宙航空研究開発機構)、Allen A Huang(University of Wisconsin Madison)、Gail Skofronick Jackson(NASA Goddard Space Flight Center)、本多 嘉明(千葉大学環境リモートセンシング研究センター)、Paul Chang(NOAA College Park)

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

*大塚 成徳1、小槻 峻司1、三好 建正1 (1.特定国立研究開発法人理化学研究所計算科学研究機構)

キーワード：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.

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