Validation and analysis of MOPITT CO observations of the Amazon Basin
Validation and analysis of MOPITT CO observations of the Amazon Basin
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DOI：
10.5194/amt-9-3999-2016
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发表时间：
2016-08-23
影响因子：
3.8
通讯作者：
Correia, C. S. C.
中科院分区：
文献类型：
--
作者：
Deeter, M. N.;Martinez-Alonso, S.;Correia, C. S. C.
我们分析了亚马逊盆地上空MOPITT(对流层污染测量)仪器对一氧化碳的卫星反演，重点是MOPITT版本6的“多光谱”反演产品(利用热红外和近红外通道)。根据2010至2013年间测量的现场垂直剖面，给出了亚马逊盆地四个站点的验证结果。结果表明，在反演低对流层CO浓度方面存在显著的负偏差。利用并置的气溶胶机器人网络(AERONET)在两个地点进行的气溶胶光学厚度(AOD)测量，研究了烟雾气溶胶作为反演偏向来源的可能影响，但似乎并不显著。最后，我们利用MOPITT记录分析了2002年以来亚马孙盆地CO的年平均周期和年际变化。
We analyze satellite retrievals of carbon monoxide from the MOPITT (Measurements of Pollution in the Troposphere) instrument over the Amazon Basin, focusing on the MOPITT Version 6 "multispectral" retrieval product (exploiting both thermal-infrared and near-infrared channels). Validation results based on in situ vertical profiles measured between 2010 and 2013 are presented for four sites in the Amazon Basin. Results indicate a significant negative bias in retrieved lower-tropospheric CO concentrations. The possible influence of smoke aerosol as a source of retrieval bias is investigated using collocated Aerosol Robotic Network (AERONET) aerosol optical depth (AOD) measurements at two sites but does not appear to be significant. Finally, we exploit the MOPITT record to analyze both the mean annual cycle and the interannual variability of CO over the Amazon Basin since 2002.