Small, highly reflective ice crystals in low‐latitude cirrus
Small, highly reflective ice crystals in low‐latitude cirrus
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DOI：
10.1029/2003gl018153
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发表时间：
2003-11
影响因子：
5.2
通讯作者：
Timothy J. Garrett;Hermann E. Gerber;D. Baumgardner;C. Twohy;E. Weinstock
中科院分区：
文献类型：
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作者：
Timothy J. Garrett;Hermann E. Gerber;D. Baumgardner;C. Twohy;E. Weinstock
在低纬度地区，卷云无处不在，比地表温度低100°C以上，限制了地球大气层和地表吸收的阳光量，减少了热量的损失。在这里，我们提出的飞机测量卷云在南部佛罗里达表明，冰晶有较小的尺寸，更反射比在目前的气候模型中假设。如果测量结果通常代表低纬度卷云，则它们指向对这些云如何影响地球气候的表示的一阶修正。
At low latitudes, cirrus are ubiquitous and can be in excess of 100°C colder than the surface, limiting the amount of sunlight absorbed by the earth's atmosphere and surface, and reducing its loss of heat. Here we present aircraft measurements within cirrus over southern Florida indicating that ice crystals have smaller sizes and are more reflective than is assumed in most current climate models. If the measurements are generally representative of low‐latitude cirrus, they point to a first‐order correction to representations of how these clouds affect the earth's climate.