DOI: 10.1002/2013GL059067
论文题名: Advanced infrared sounder subpixel cloud detection with imagers and its impact on radiance assimilation in NWP
作者: Wang P. ; Li J. ; Li J. ; Li Z. ; Schmit T.J. ; Bai W.
刊名: Geophysical Research Letters
ISSN: 0094-10319
EISSN: 1944-10050
出版年: 2014
卷: 41, 期: 5 起始页码: 1773
结束页码: 1780
语种: 英语
英文关键词: AIRS subpixel cloud detection
; data assimilation
; Hurricane Sandy
; MODIS cloud mask
Scopus关键词: Acoustic devices
; Advanced very high resolution radiometers (AVHRR)
; Data processing
; Hurricanes
; Infrared devices
; Infrared imaging
; Satellite imagery
; Sounding apparatus
; Weather forecasting
; Weather satellites
; Atmospheric infrared sounders
; Cloud masks
; Cross-track infrared sounder
; Data assimilation
; Infrared atmospheric sounding interferometers
; Numerical weather prediction
; Sub pixels
; Weather research and forecasting
; Infrared instruments
; AIRS
; climate prediction
; cloud cover
; data assimilation
; data set
; detection method
; Hurricane Sandy 2012
; imagery
; interpolation
; MetOp
; MODIS
; pixel
; spatial resolution
; VIIRS
; weather forecasting
英文摘要: Accurate cloud detection is very important for infrared (IR) radiance assimilation; improved cloud detection could reduce cloud contamination and hence improve the assimilation. Although operational numerical weather prediction (NWP) centers are using IR sounder radiance data for cloud detection, collocated high spatial resolution imager data could help sounder subpixel cloud detection and characterization. IR sounder radiances with improved cloud detection using Atmospheric Infrared Sounder (AIRS)/Moderate Resolution Imaging Spectroradiometer (MODIS) were assimilated for Hurricane Sandy (2012). Forecast experiments were run with Weather Research and Forecasting (WRF) as the forecast model and the Three-Dimensional Variational Assimilation (3DVAR)-based Gridpoint Statistical Interpolation (GSI) as the analysis system. Results indicate that forecasts of both hurricane track and intensity are substantially improved when the collocated high spatial resolution MODIS cloud mask is used for AIRS subpixel cloud detection for assimilating radiances. This methodology can be applied to process Crosstrack Infrared Sounder (CRIS)/Visible Infrared Imaging Radiometer Suite (VIIRS) onboard Suomi-NPOESS Preparatory Project (NPP)/Joint Polar Satellite System (JPSS) and Infrared Atmospheric Sounding Interferometer (IASI)/Advanced Very High Resolution Radiometer (AVHRR) onboard the Metop series for improved radiance assimilation in NWP. Key Points The application of AIRS subpixel cloud detection with 1 km MODIS cloud The analysis fields with assimilation of accurate clear radiances are improved The forecasts are substantially improved with the AIRS subpixel cloud detection ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84895155606&doi=10.1002%2f2013GL059067&partnerID=40&md5=5fab97f5a5a4edfca698273fccf1bd1a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7583
Appears in Collections: 气候减缓与适应
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作者单位: Cooperative Institute for Meteorological Satellite Studies, University of Wisconsin-Madison, Madison WI, United States
Recommended Citation:
Wang P.,Li J.,Li J.,et al. Advanced infrared sounder subpixel cloud detection with imagers and its impact on radiance assimilation in NWP[J]. Geophysical Research Letters,2014-01-01,41(5).