The Impacts of Land-Use and Land-Cover Change on Tropospheric Temperatures at Global and Regional Scales

Earth Interactions

WeiyueZhang¹ 

关键词: Air temperatures;    Seasonality;    Nonlocal response;    Temperature advection;   

DOI  :  10.1175/EI-D-15-0029.1

学科分类：地球科学(综合)

来源: American Geophysical Union

【 摘 要 】

AbstractThe impacts of land-use and land-cover change (LULCC) on tropospheric temperatures are investigated in this study using the fully coupled Community Earth System Model. Two simulations are performed using potential and current vegetation cover. The results show that LULCC can induce detectable changes in the tropospheric air temperature. Although the influence of LULCC on tropospheric temperature is weak, a significant influence can still be found below 300 hPa in summer over land. Compared to the global-mean temperature change, LULCC-induced changes in the regional-mean air temperature can be 2–3 times larger in the middle–upper troposphere and approximately 8 times larger in the lower troposphere. In East Asia and South Asia, LULCC is shown to produce significant decreases (0.2° to 0.4°C) in air temperature in the middle–upper troposphere in spring and autumn due to the largest decrease in the latent heat release from precipitation. In Europe and North America, the most significant tropospheric c...

【 授权许可】

Unknown