DOI: 10.1007/s00382-015-2896-3
Scopus记录号: 2-s2.0-84947716961
论文题名: Impact of land-use and land-cover changes on CRCM5 climate projections over North America for the twenty-first century
作者: Alexandru A. ; Sushama L.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2016
卷: 47, 期: 2017-03-04 起始页码: 1197
结束页码: 1209
语种: 英语
英文关键词: Climate change projections over North America
; CRCM5
; Land-use and land-cover change
; Regional climate modelling
英文摘要: The aim of this study is to assess the impact of land-use and land-cover change (LULCC) on regional climate projections for North America. To this end, two transient climate change simulations, with and without LULCC, but identical atmospheric forcing, are performed with the 5th generation of the Canadian Regional Climate Model (CRCM5) driven by CanESM2 model for the (2006–2100)-RCP4.5 scenario. For the simulation with LULCC, land-cover data sets are taken from the Global Change Assessment Model representing the RCP4.5 scenario for the period 2006–2100. LULCC in RCP4.5 scenario point to significant reduction in cultivated land (e.g. Canadian Prairies and Mississippi basin) due to intense afforestation. Results suggest that biogeophysical effects of LULCC on climate, assessed through differences between the all-forcing (atmospheric and LULCC) run and the atmospheric forcing run (with constant land cover) are substantial for relevant surface variables. It is shown that the afforestation of cropland lead to warmer regional climates, especially in winter (warming above 1.5 °C), as compared with climates resulting from atmospheric forcings alone. The investigation of processes leading to this response shows high sensitivity of the results to changes in albedo as a response to LULCC. Additional roughness, evaporative cooling and water soil availability also seem to play an important role in regional climate especially for the summer season in certain afforested areas (e.g., southeastern US). © 2015, Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53583
Appears in Collections: 过去全球变化的重建
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作者单位: Centre ESCER (Étude et Simulation du Climat à l’Échelle Régionale), Département des Sciences de la Terre et de l’Atmosphère, Université du Québec à Montréal (UQÀM), C.P. 8888, Succ. Centre-ville, Montréal, QC, Canada; Canada Research Chair in Regional Climate Modelling, UQÀM, Montréal, QC, Canada
Recommended Citation:
Alexandru A.,Sushama L.. Impact of land-use and land-cover changes on CRCM5 climate projections over North America for the twenty-first century[J]. Climate Dynamics,2016-01-01,47(2017-03-04)