文章基本信息

标题：Detecting Aerosols over Land from Satellites by Measuring Far IR Radiation from the Earth-Atmospheric System
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作者：Shi Guang-Yu ; Sun Yuan-Long
期刊名称：Atmospheric and Oceanic Science Letters
印刷版ISSN：1674-2834
电子版ISSN：2376-6123
出版年度：2010
卷号：3
期号：2
页码：111-115
DOI：10.1080/16742834.2010.11446851
语种：English
出版社：Taylor and Francis Ltd
摘要：In this study, a special method is proposed for detecting aerosols over land by analyzing satellitemeasured far IR radiation at three channels, 8.7, 11.5, and 12.5µm. Sensitivity tests revealed that the behavioral features of radiative brightness temperatures (BTs) at these three channels with increasing optical depth are different among different types of aerosols. Analyzing how BTs and their differences, xBT (BT11.5-BT12.5) and yBT (BT8.7-BT11.5), behave with varying optical depth can help to qualitatively distinguish among aerosols and semi-quantitatively estimate their optical thicknesses. In addition, the authors found that the vertical density profile of aerosols has little impact on this method.
关键词：aerosol remote-sensing; over-land; IR radiation; brightness temperature; satellite