Polar stratospheric clouds and upper-tropospheric clouds
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چکیده
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منابع مشابه
On the linkage between tropospheric and Polar Stratospheric clouds in the Arctic as observed by space–borne lidar
The type of Polar stratospheric clouds (PSCs) as well as their temporal and spatial extent are important for the occurrence of heterogeneous reactions in the polar stratosphere. The formation of PSCs depends strongly on temperature. However, the mechanisms of the formation of solid PSCs are still poorly understood. Recent satellite studies of Antarctic PSCs have shown that their formation can b...
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U pper-tropospheric ice clouds are important modulators of the Earth’s climate, cover 20% of the globe at any given time (Liou 1986), and occur ~43% of the time in long-term satellite datasets (Wylie and Menzel 1999). Ice clouds, such as cirrus, tend to ref lect less incoming solar radiation and absorb more infrared radiation than water clouds, which are typically optically thicker and occur at...
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This discussion paper is/has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP if available. Abstract The type of Polar stratospheric clouds (PSCs) as well as their temporal and spatial extent are important for the occurrence of heterogeneous reactions in the polar stratosphere. The formation of PSCs depends strongly ...
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[1] The signature of the stratospheric Brewer-Dobson circulation (BDC) in tropospheric cloudiness is investigated in CloudSat and CALIPSO data from June 2006 through April 2011. During the Northern Hemisphere winter, periods of enhanced stratospheric wave driving are associated with increased cloud incidence in the tropical tropopause transition layer (TTL) juxtaposed against decreased cloud in...
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An atmospheric radiation model is used to study the combined effects of ozone depletions/redistributions and particulate clouds on atmospheric heating/photolysis rates and ultraviolet radiation reaching the biosphere. Four types of particulate clouds prevalent in the summertime Arctic are considered: stratospheric aerosols, tropospheric aerosols (Arctic haze), cirrus clouds, and stratus clouds....
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