DOI: 10.1002/2015MS000584
Scopus记录号: 2-s2.0-84971659642
论文题名: Future changes in regional precipitation simulated by a half-degree coupled climate model: Sensitivity to horizontal resolution
作者: Shields C ; A ; , Kiehl J ; T ; , Meehl G ; A
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2016
卷: 8, 期: 2 起始页码: 863
结束页码: 884
语种: 英语
英文关键词: Climate models
; Precipitation (chemical)
; Precipitation (meteorology)
; Scale (deposits)
; Community climate system model
; Convective precipitation
; Coupled climate model
; Extreme precipitation
; Global climate model
; Horizontal resolution
; Large-scale precipitation
; Regional climate changes
; Climate change
; climate change
; climate modeling
; concentration (composition)
; convection
; future prospect
; global climate
; greenhouse gas
; precipitation assessment
; regional climate
; resolution
; seasonality
; sensitivity analysis
; Australia
; Southern Europe
; United States
英文摘要: The global fully coupled half-degree Community Climate System Model Version 4 (CCSM4) was integrated for a suite of climate change ensemble simulations including five historical runs, five Representative Concentration Pathway 8.5 [RCP8.5) runs, and a long Pre-Industrial control run. This study focuses on precipitation at regional scales and its sensitivity to horizontal resolution. The half-degree historical CCSM4 simulations are compared to observations, where relevant, and to the standard 1° CCSM4. Both the half-degree and 1° resolutions are coupled to a nominal 1° ocean. North American and South Asian/Indian monsoon regimes are highlighted because these regimes demonstrate improvements due to higher resolution, primarily because of better-resolved topography. Agriculturally sensitive areas are analyzed and include Southwest, Central, and Southeast U.S., Southern Europe, and Australia. Both mean and extreme precipitation is discussed for convective and large-scale precipitation processes. Convective precipitation tends to decrease with increasing resolution and large-scale precipitation tends to increase. Improvements for the half-degree agricultural regions can be found for mean and extreme precipitation in the Southeast U.S., Southern Europe, and Australian regions. Climate change responses differ between the model resolutions for the U.S. Southwest/Central regions and are seasonally dependent in the Southeast and Australian regions. Both resolutions project a clear drying signal across Southern Europe due to increased greenhouse warming. Differences between resolutions tied to the representation of convective and large-scale precipitation play an important role in the character of the climate change and depend on regional influences. © 2016. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75914
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
There are no files associated with this item.
作者单位: Climate and Global Dynamics Division, National Center for Atmospheric Research, Boulder, CO, United States
Recommended Citation:
Shields C,A,, Kiehl J,et al. Future changes in regional precipitation simulated by a half-degree coupled climate model: Sensitivity to horizontal resolution[J]. Journal of Advances in Modeling Earth Systems,2016-01-01,8(2)