Global Daytime Distribution of Overlapping Cirrus Cloud from NOAA’s Advanced Very High Resolution Radiometer
Global Daytime Distribution of Overlapping Cirrus Cloud from NOAA’s Advanced Very High Resolution Radiometer
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NOAA 先进甚高分辨率辐射计显示的重叠卷云的全球日间分布
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
M. Pavolonis
中科院分区：
文献类型：
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作者：
A. Heidinger;M. Pavolonis
摘要：美国国家海洋和大气管理局 (NOAA) 的高级甚高分辨率辐射计 (AVHRR) 仪器的数据用于提供多层云的 7 月和 1 月全球白天平均分布，其中多层云被定义为与一个或多个较低层重叠的卷云。 AVHRR 数据取自多年，选择这些数据是为了提供本地时间 1430-1500 的恒定当地赤道穿越时间的数据。云重叠检测算法用于 NOAA AVHRR (CLAVR-x) 处理系统的扩展云。 60°N 和 60°S 之间的结果表明，大约 20% 的所有云和大约 40% 的冰云被归类为卷云重叠较低云（卷云重叠）。结果显示出强烈的 7 月至 1 月模式，与对流的季节周期一致。在某些地区，卷云重叠是观测到的主要云类型。这里介绍的重叠卷云的分布进行了比较......
Abstract Data from the National Oceanic and Atmospheric Administration’s (NOAA’s) Advanced Very High Resolution Radiometer (AVHRR) instrument are used to provide the mean July and January global daytime distributions of multilayer cloud, where multilayer cloud is defined as cirrus overlapping one or more lower layers. The AVHRR data were taken from multiple years that were chosen to provide data with a constant local equator crossing time of 1430–1500 local time. The cloud overlap detection algorithm is used in NOAA’s Extended Clouds from AVHRR (CLAVR-x) processing system. The results between 60°N and 60°S indicated that roughly 20% of all clouds and roughly 40% of all ice clouds were classified as cirrus overlapping lower cloud (cirrus overlap). The results show a strong July–January pattern that is consistent with the seasonal cycle in convection. In some regions, cirrus overlap is found to be the dominant type of cloud observed. The distributions of overlapping cirrus cloud presented here are compared ...