Japan Geoscience Union Meeting 2015

Presentation information


Symbol A (Atmospheric and Hydrospheric Sciences) » A-AS Atmospheric Sciences, Meteorology & Atmospheric Environment

[A-AS22] Hyper-dense observation and forecast to elucidate micro-scale atmospheric phenomena

Tue. May 26, 2015 9:00 AM - 10:45 AM 301A (3F)

Convener:*Jun-ichi Furumoto(Research Institute for Sustainable Humanosphere, Kyoto University), Nobumitsu Tsunematsu(Tokyo Metropolitan Research Institute for Environmental Protection), Kentaro Araki(Forecast Research Department, Meteorological Research Institute, Japan Meteorological Agency), Chair:Kuniaki Higashi(Research Institute for Sustainable Humanosphere, Kyoto University)

9:15 AM - 9:30 AM

[AAS22-15] 30-second-update ensemble Kalman filter experiments using JMA-NHM at a 100-m resolution

*Masaru KUNII1, Juan RUIZ2, Guo-yuan LIEN3, Tomoo USHIO4, Shinsuke SATOH5, Kotaro BESSHO6, Hiromu SEKO1, Takemasa MIYOSHI3 (1.Meteorological Research Institute, 2.University of Buenos Aires, 3.RIKEN Advanced Institute for Computational Science, 4.Osaka University, 5.National Institute of Information and Communications Technology, 6.Meteorological Satellite Center)

Local severe rainstorms may cause serious damage such as flooding and landslide, but its precise simulation is difficult mainly due to limited spatial and temporal resolutions of numerical weather prediction (NWP). To tackle this challenge, a 100-m-resolution NWP system is designed, so that the forecasts are updated every 30 seconds by assimilating observational data from the phased array weather radars (PAWR) at Osaka and Kobe. In addition, the next-generation geostationary satellite Himawari-8 will have a 30-second scanning mode for a limited domain, and using the Himawari-8 data is within the scope. An observation operator and quality control algorithm are developed for PAWR, and data assimilation experiments using the Local Ensemble Transform Kalman Filter (LETKF) are performed for the local heavy rainfall case that caused a disaster in Kyoto on 13 July 2013. In this presentation, a brief introduction to the experiments and the results will be presented.