FY-4A大气垂直探测仪(GIIRS)温度探测通道优选试验
Received:January 11, 2018  Revised:March 07, 2018  点此下载全文
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Author NameAffiliationE-mail
YANG Yu-Han School of geographic sciences in East China Normal University yangyh1993@126.com 
YIN Qiu Meterological Satellite User′s Office of China Meteorological AdministrationChina Shanghai Meteorological Service yinqiu@cma.gov.cn 
SHU Jiong School of Geographic Sciences in East China Normal University jshu@geo.ecnu.edu.cn 
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)(41271055和41601469);上海市气象局科技开发项目(YJ201408)
中文摘要:针对中国第二代静止气象卫星风云四号(FY-4A)的干涉式大气垂直探测仪(GIIRS),从信息容量的角度,运用可以描述红外高光谱大气探测资料中大气参数有效信息的分步迭代法,以及精确型辐射传输模式LBLRTM,进行温度探测通道优选试验。计算得到在全球范围反演温度廓线的56个优选通道以及FY-4A探测范围的58个优选通道,所选通道自身信息容量较高,相互之间相关性小,可应用于大气温度廓线反演和数据同化研究。
中文关键词:风云四号A  干涉式大气垂直探测仪  GIIRS  通道优选  红外高光谱  信息容量
 
Experiment on channel selection of atmosphere vertical sounder(GIIRS) onboard the FY-4A geostationary satellite
Abstract:In view of GIIRS, a hyperspectral vertical detector equipped on the FY-4A geostationary satellite, a channel selection experiment for the retrieval of temperature is carried out. Using line-by-line radiative transfer model, according to the information content, channels are selected by step-by-step iterative method, which can be used to describe the effective information of various atmospheric parameters in the infrared hyperspectral data. Finally, sensitive channels using for retrieval of temperature profile are obtained,56 channels in global and 58 in FY-4A detection range. The selected channels have small correlation with each other,and they have high information content, which can be used as the representative channel set for temperature profile retrieval research and data assimilation.
keywords:FY-4A, Interferometric atmospheric vertical detector, GIIRS, channel selection, Infrared hyperspectral, Information content
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Copyright:《Journal of Infrared And Millimeter Waves》