First satellite observations of lower tropospheric ammonia and methanol

被引：92

作者：

Beer, Reinhard ^{[1
]}

Shephard, Mark W. ^{[3
]}

Kulawik, Susan S. ^{[1
]}

Clough, Shepard A. ^{[2
]}

Eldering, Annmarie ^{[1
]}

Bowman, Kevin W. ^{[1
]}

Sander, Stanley P. ^{[1
]}

Fisher, Brendan M. ^{[1
]}

Payne, Vivienne H. ^{[3
]}

Luo, Mingzhao ^{[1
]}

Osterman, Gregory B. ^{[1
]}

Worden, John R. ^{[1
]}

机构：

[1] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[2] Clough Radiat Associates LLC, Lexington, MA 02420 USA

[3] Atmospher & Environm Res Inc, Lexington, MA 02421 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2008年 / 35卷 / 09期

关键词：

D O I：

10.1029/2008GL033642

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

[1] The Tropospheric Emission Spectrometer (TES) on the EOS Aura satellite makes global measurements of infrared radiances which are used to derive profiles of species such as O-3, CO, H2O, HDO and CH4 as routine standard products. In addition, TES has a variety of special modes that provide denser spatial mapping over a limited geographical area. A continuous-coverage mode ( called "transect'', about 460 km long) has now been used to detect additional molecules indicative of regional air pollution. On 10 July 2007 at about 05: 37 UTC (13: 24 LMST) TES conducted such a transect observation over the Beijing area in northeast China. Examination of the residual spectral radiances following the retrieval of the TES standard products revealed surprisingly strong features attributable to enhanced concentrations of ammonia (NH3) and methanol (CH3OH), well above the normal background levels. This is the first time that these molecules have been detected in space-based nadir viewing measurements that penetrate into the lower atmosphere.

引用

页数：5

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