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	大气下行长波辐射快速实验测量方法研究
其他题名	Research on Fast Experimental Measurement Method for Atmosphere Downward Long-Wave Radiance
	胡菊旸 1; 唐世浩 2; 董立新 2; 李想 3
来源期刊	光谱学与光谱分析
ISSN	1000-0593
出版年	2012
卷号	32 期号:6 页码:1596-1600
中文摘要	采用辐射传输模式模拟了特殊角度随气溶胶光学厚度及大气温湿度的变化情况,结果显示晴空下该角度不受气溶胶影响,受大气温度影响小,但受大气水汽含量影响显著,因此晴空下热红外光谱仪测量下行辐射时特殊天顶角可只根据大气水汽含量确定。西部荒漠地区下行辐射测量实验结果表明,据大气水汽含量确定的特殊角度值与实验结果一致,且该角度处辐射作为积分辐射符合精度要求。特殊角度值可用研究区大气水汽含量确定,该快速测量法可广泛用于野外实验,方便快捷测量准确瞬时下行辐射。
英文摘要	Direct measurement of the sky radiation in the direction of a special zenith angle as the average downward radiation is the fastest instantaneous downward radiation measurement.But this method has not been widely used,because there is no accurate method for determining special zenith angle.The present paper analyzed the special angle with the variation of the aerosol optical thickness and atmospheric temperature and humidity through simulation by radiative transfer model.The results show that the special angles will be affected none by aerosols in clear skies,very little by atmospheric temperature,but significantly by atmospheric water vapor content.Therefore,the special angle could be determined only by atmospheric water vapor content in downward radiance infrared spectroscopy measurements in clear sky conditions.The downward radiation measurements results in western desert region indicate that the special angles determined by local atmospheric water vapor content are the same as experimental results.Besides,the error caused by taking the radiance at the special angle as the integral radiance meets the accuracy requirements.Accordingly,this fast measurement method can be widely used in field experiments while the special angle can be determined by atmospheric water vapor of the study area,since it can measure instantaneous downward radiance conveniently and accurately.
中文关键词	热红外遥感 ; 野外测量 ; 大气下行长波辐射 ; 观测天顶角
英文关键词	Thermal infrared remote sensing Atmospheric downward long-wave radiance Field measurement View zenith angle
语种	中文
国家	中国
收录类别	CSCD
WOS类目	REMOTE SENSING
WOS研究方向	Remote Sensing
CSCD记录号	CSCD:4550634
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228201
作者单位	1.中国气象科学研究院, 北京 100081, 中国; 2.国家卫星气象中心, 北京 100081, 中国; 3.南京信息工程大学应用气象学院, 南京, 江苏 210044, 中国
推荐引用方式 GB/T 7714	胡菊旸,唐世浩,董立新,等. 大气下行长波辐射快速实验测量方法研究[J],2012,32(6):1596-1600.
APA	胡菊旸,唐世浩,董立新,&李想.(2012).大气下行长波辐射快速实验测量方法研究.光谱学与光谱分析,32(6),1596-1600.
MLA	胡菊旸,et al."大气下行长波辐射快速实验测量方法研究".光谱学与光谱分析 32.6(2012):1596-1600.