Remote tropical and sub-tropical responses to Amazon deforestation

被引：37

作者：

Badger, Andrew M. ^{[1
]}

Dirmeyer, Paul A. ^{[1
,2
]}

机构：

[1] George Mason Univ, Fairfax, VA 22030 USA

[2] Ctr Ocean Land Atmosphere Studies, Fairfax, VA USA

来源：

CLIMATE DYNAMICS | 2016年 / 46卷 / 9-10期

基金：

美国海洋和大气管理局; 美国国家科学基金会; 美国国家航空航天局;

关键词：

Land-use change; Amazon deforestation; Remote Response; Dynamics; CLIMATE; SCALE; MODEL;

D O I：

10.1007/s00382-015-2752-5

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

Replacing natural vegetation with realistic tropical crops over the Amazon region in a global Earth system model impacts vertical transport of heat and moisture, modifying the interaction between the atmospheric boundary layer and the free atmosphere. Vertical velocity is decreased over a majority of the Amazon region, shifting the ascending branch and modifying the seasonality of the Hadley circulation over the Atlantic and eastern Pacific oceans. Using a simple model that relates circulation changes to heating anomalies and generalizing the upper-atmosphere temperature response to deforestation, agreement is found between the response in the fully-coupled model and the simple solution. These changes to the large-scale dynamics significantly impact precipitation in several remote regions, namely sub-Saharan Africa, Mexico, the southwestern United States and extratropical South America, suggesting non-local climate repercussions for large-scale land use changes in the tropics are possible.

引用

页码：3057 / 3066

页数：10

共 27 条

[11] GLOBAL CLIMATE SENSITIVITY TO TROPICAL DEFORESTATION [J].