Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0589.1 |
Impacts of Land-Use/Land-Cover Change on Afternoon Precipitation over North America | |
Chen, Liang; Dirmeyer, Paul A. | |
2017-03-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | This study investigates the impacts of historical land-cover change on summer afternoon precipitation over North America using the Community Earth System Model. Using land-atmosphere coupling metrics, this study examines the sensitivity of afternoon atmospheric conditions to morning land surface states and fluxes that are altered by land-cover changes before and since 1850. The deforestation in the eastern United States prior to 1850 leads to increased latent but decreased sensible heat flux during the morning and a reduction in afternoon precipitation over the southern regions of the U.S. East Coast. The agricultural expansion over the Great Plains since preindustrial times shows similar effects on surface fluxes but results in a significant widespread increase in precipitation over the crop area. The coupling metrics exhibit a strong positive soil moisture-precipitation relationship over the Great Plains. Impacts of land-cover change on precipitation manifest through changes in rainfall frequency, rather than intensity, that are largely controlled by the distribution of CAPE as the trigger of convective precipitation. However, deforestation and later reforestation over the eastern United States, where coupling properties are different than the Great Plains, do not have as dominant an effect on afternoon precipitation. Additionally, precipitation over parts of the U.S. Southwest decreases in this model during the earlier period of East Coast deforestation, owing to changes in the large-scale circulation over North America driven by land-use changes prior to 1850. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000395765900016 |
WOS关键词 | ATMOSPHERE COUPLING EXPERIMENT ; SOIL-MOISTURE ; PART II ; UNITED-STATES ; CONVECTIVE PRECIPITATION ; USE TRANSITIONS ; WOOD-HARVEST ; CLIMATE ; FEEDBACK ; PARAMETERIZATION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/19924 |
专题 | 气候变化 |
作者单位 | George Mason Univ, Ctr Ocean Land Atmosphere Studies, Fairfax, VA USA |
推荐引用方式 GB/T 7714 | Chen, Liang,Dirmeyer, Paul A.. Impacts of Land-Use/Land-Cover Change on Afternoon Precipitation over North America[J]. JOURNAL OF CLIMATE,2017,30(6). |
APA | Chen, Liang,&Dirmeyer, Paul A..(2017).Impacts of Land-Use/Land-Cover Change on Afternoon Precipitation over North America.JOURNAL OF CLIMATE,30(6). |
MLA | Chen, Liang,et al."Impacts of Land-Use/Land-Cover Change on Afternoon Precipitation over North America".JOURNAL OF CLIMATE 30.6(2017). |
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