DOI: 10.1175/JCLI-D-16-0673.1
Scopus记录号: 2-s2.0-85028513950
论文题名: The changing character of twenty-first-century precipitation over the western United States in the variable-resolution CESM
作者: Huang X. ; Ullrich P.A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 18 起始页码: 7555
结束页码: 7575
语种: 英语
Scopus关键词: Climate change
; Climatology
; Greenhouse gases
; Oceanography
; Precipitation (chemical)
; Precipitation (meteorology)
; Sea ice
; Surface waters
; Anthropogenic effects
; Clausius-Clapeyron relationship
; Extreme events
; Extreme precipitation events
; Interannual variability
; Precipitation climatology
; Regional model
; Sea surface temperature (SST)
; Climate models
英文摘要: The changing characters of precipitation frequency and intensity have been comprehensively investigated from the recent historical period to the end of the twenty-first century over the western United States. Variableresolution Community Earth System Model (VR-CESM) ensemble simulations are applied with a fine grid resolution of ;0.258 over the study area. Simulations are forced with prescribed sea surface temperatures, sea ice extent, and greenhouse gas concentrations fromthe representative concentration pathway 8.5 (RCP8.5) scenario. VR-CESM is shown to be effective at accurately capturing the spatial patterns of the historical precipitation climatology. The results of VR-CESM output provide significantly regional details with crucial enhancement of precipitation representations over complex terrain. In the IntermountainWest and U.S. Southwest, a statistically significant increase in mean precipitation and rainy days through midcentury is observed, although this trend is tempered by the end of the century in response to a decrease in relative humidity. Over the Pacific Northwest, extreme precipitation events are observed to increase significantly as a result of increased cool season integrated vapor transport associated with a moistening of the cool seasons and drying through the warm seasons. In particular, extreme precipitation in this region appears to increase more rapidly than would be predicted by the Clausius-Clapeyron relationship. No clear climate signal emerges in mean precipitation or extreme events in the majority of California, where the precipitation climatology is attributed to large interannual variabilities that are tied closely to ENSO patterns. © 2017 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48719
Appears in Collections: 气候减缓与适应 气候变化与战略
There are no files associated with this item.
作者单位: Department of Land, Air and Water Resources, University of California, Davis, Davis, CA, United States; Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, Los Angeles, CA, United States
Recommended Citation:
Huang X.,Ullrich P.A.. The changing character of twenty-first-century precipitation over the western United States in the variable-resolution CESM[J]. Journal of Climate,2017-01-01,30(18)