IMPACTS ON REGIONAL CLIMATE OF AMAZON DEFORESTATION
IMPACTS ON REGIONAL CLIMATE OF AMAZON DEFORESTATION
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DOI：
10.1029/92gl01905
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发表时间：
1992-10-02
影响因子：
5.2
通讯作者：
KENNEDY, P
中科院分区：
文献类型：
--
作者：
DICKINSON, RE;KENNEDY, P
对亚马逊森林砍伐的气候响应进行了模拟。降水量平均减少25%或1.4毫米/天，蒸散量和径流量均减少0.7毫米/天。云反馈使通过改变反照率和粗糙度来改变地表能量平衡变得复杂。较高的地表反照率最初对太阳辐射吸收的减少在很大程度上被云量的减少所抵消，但随之而来的下行长波的减少对地面能量平衡有很大的影响。烟雾气溶胶的影响可能与焚烧季节的森林砍伐相当。
A simulation of the climate response to Amazon deforestation has been carried out. Precipitation is decreased on the average by 25% or 1.4 mm/day, with ET and runoff both decreasing by 0.7 mm/day. Modifications of surface energy balance through change of albedo and roughness are complicated by cloud feedbacks. The initial decrease of the absorption of solar radiation by higher surface albedos is largely cancelled by a reduction in cloud cover, but consequent reduction in downward longwave has a substantial impact on surface energy balance. Smoke aerosols might have an effect comparable to deforestation during burning season.