Estimation of atmospheric water vapour content from direct measurements of radiance in the thermal infrared region

被引：5
|
作者：
Garcia-Santos, Vicente [1 ]
Miquel Galve, Joan [1 ]
Valor, Enric [1 ]
Caselles, Vicente [1 ]
Coll, Cesar [1 ]
机构：
[1] Univ Valencia, Dept Earth Phys & Thermodynam, Fac Phys, E-46100 Valencia, Spain
来源：
REMOTE SENSING LETTERS | 2012年 / 3卷 / 01期
关键词：
SURFACE TEMPERATURE; RETRIEVAL; LAND; EMISSIVITY; VALIDATION;
D O I：
10.1080/01431161.2010.531060
中图分类号：
TP7 [遥感技术];
学科分类号：
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要：
Atmospheric water vapour content is a required parameter in thermal infrared (TIR) to carry out processes such as atmospheric correction or retrieving atmospheric factors (downwelling or upwelling irradiance, transmittance of the atmosphere and so on). This study proposes an alternative method to the ones already in use to measure water vapour content from direct measurements of downwelling atmospheric radiance in the TIR range. It was possible to estimate a linear relationship between atmospheric water vapour and downwelling atmospheric radiance using a simulated study, based on data from a radiosounding database. A subsequent validation concludes that it is possible to obtain water vapour content with an uncertainty of 0.5 cm using in situ measurements of downwelling atmospheric radiance in the TIR range of 11.5-12.5 mu m.
引用
收藏
页码：31 / 38
页数：8
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