DOI: 10.1002/2017JD027096
Scopus记录号: 2-s2.0-85040723133
论文题名: Assimilation of Himawari-8 All-Sky Radiances Every 10 Minutes: Impact on Precipitation and Flood Risk Prediction
作者: Honda T. ; Kotsuki S. ; Lien G.-Y. ; Maejima Y. ; Okamoto K. ; Miyoshi T.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 2 起始页码: 965
结束页码: 976
语种: 英语
英文关键词: all-sky infrared radiance
; data assimilation
; ensemble Kalman filter
; flood risk prediction
; Himawari-8
; rapid update
Scopus关键词: data assimilation
; discharge
; flood forecasting
; geostationary satellite
; infrared radiation
; Kalman filter
; precipitation (climatology)
; prediction
; risk assessment
; river discharge
; tropical cyclone
; Honshu
; Japan
; Kanto
; Tohoku
英文摘要: Japan's new geostationary satellite “Himawari-8” enables updating precipitation and flood predictions as frequently as every 10 min and to capture as early as possible the flood risk associated with rapidly changing severe weather. This study focuses on the advantage of the frequent update of precipitation and flood predictions by assimilating all-sky Himawari-8 infrared radiances in the case of September 2015 Kanto-Tohoku heavy rainfall, a major flooding event in Japan. The analyzed tropical cyclone representation and moisture transport are improved by the Himawari-8 data assimilation. Deterministic runs from the analyses with the Himawari-8 data provide much improved forecasts of a strong precipitation band. Moreover, every 10 min updates of river discharge forecasts driven by these improved precipitation forecasts show a large improvement in forecast skill with longer lead times. The results demonstrate that the frequent refresh aids to capture a signature of flooding at an earlier stage. ©2017. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114653
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: RIKEN Advanced Institute for Computational Science, Kobe, Japan; Meteorological Research Institute, Japan Meteorological Agency, Tsukuba, Japan; Department of Atmospheric and Oceanic Science, University of Maryland, College Park, MD, United States; Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan
Recommended Citation:
Honda T.,Kotsuki S.,Lien G.-Y.,et al. Assimilation of Himawari-8 All-Sky Radiances Every 10 Minutes: Impact on Precipitation and Flood Risk Prediction[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(2)