A High-Resolution Climate Model for the U.S. Pacific Northwest: Mesoscale Feedbacks and Local Responses to Climate Change*
A High-Resolution Climate Model for the U.S. Pacific Northwest: Mesoscale Feedbacks and Local Responses to Climate Change*
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DOI：
10.1175/2008jcli2090.1
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发表时间：
2008-11
影响因子：
4.9
通讯作者：
E. Salathe;Richard C. Steed;C. Mass;P. H. Zahn
中科院分区：
文献类型：
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作者：
E. Salathe;Richard C. Steed;C. Mass;P. H. Zahn
用高分辨率气候模式对未来气候情景进行的模拟表明，与嵌套的全球模式相比，太平洋西北地区的温度和降水趋势明显不同，这显然是因为中尺度过程在粗分辨率下没有得到解决。目前（1990-99）和未来（2020-29，2045-54，和2090-99）的条件下模拟高分辨率（15公里网格间距）使用第五代宾夕法尼亚州立大学-NCAR中尺度模式（MM 5）系统和ECHAM 5全球模拟强迫。模拟使用政府间气候变化专门委员会（IPCC）排放情景特别报告（SRES）A2排放情景，该情景假设温室气体浓度迅速增加。中尺度模拟产生区域性的积雪，云量和环流模式与大尺度气候变化和区域地形和陆地-水对比之间的相互作用的变化。这些chan…
Abstract Simulations of future climate scenarios produced with a high-resolution climate model show markedly different trends in temperature and precipitation over the Pacific Northwest than in the global model in which it is nested, apparently because of mesoscale processes not being resolved at coarse resolution. Present-day (1990–99) and future (2020–29, 2045–54, and 2090–99) conditions are simulated at high resolution (15-km grid spacing) using the fifth-generation Pennsylvania State University–NCAR Mesoscale Model (MM5) system and forced by ECHAM5 global simulations. Simulations use the Intergovernmental Panel on Climate Change (IPCC) Special Report on Emissions Scenarios (SRES) A2 emissions scenario, which assumes a rapid increase in greenhouse gas concentrations. The mesoscale simulations produce regional alterations in snow cover, cloudiness, and circulation patterns associated with interactions between the large-scale climate change and the regional topography and land–water contrasts. These chan...