Global Daytime Distribution of Overlapping Cirrus Cloud from NOAA’s Advanced Very High Resolution Radiometer

摘要: Abstract Data from the National Oceanic and Atmospheric Administration’s (NOAA’s) Advanced Very High Resolution Radiometer (AVHRR) instrument are used to provide mean July January global daytime distributions of multilayer cloud, where cloud is defined as cirrus overlapping one or more lower layers. The AVHRR data were taken multiple years that chosen with a constant local equator crossing time 1430–1500 time. overlap detection algorithm in NOAA’s Extended Clouds (CLAVR-x) processing system. results between 60°N 60°S indicated roughly 20% all clouds 40% ice classified (cirrus overlap). show strong July–January pattern consistent seasonal cycle convection. In some regions, found be dominant type observed. presented here compared ...