DOI: 10.1175/JCLI-D-14-00488.1
Scopus记录号: 2-s2.0-84942851195
论文题名: Connectivity between historical great basin precipitation and Pacific ocean variability: A CMIP5 model evaluation
作者: Smith K. ; Strong C. ; Wang S.-Y.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 15 起始页码: 6096
结束页码: 6112
语种: 英语
Scopus关键词: Atmospheric pressure
; Atmospheric temperature
; Chloride minerals
; Climate models
; Climatology
; Surface waters
; Water management
; Climate variability
; Coupled Model Intercomparison Project
; Model evaluation/performance
; Multi-decadal time scale
; Pacific decadal oscillation
; Precipitation teleconnection
; Quasi-decadal oscillation
; Sea surface temperatures
; Oceanography
; climate variation
; drought
; El Nino-Southern Oscillation
; model validation
; Pacific Decadal Oscillation
; precipitation assessment
; sea surface temperature
; Great Basin
; Pacific Ocean
; Pacific Ocean (North)
; United States
英文摘要: The eastern Great Basin (GB) in the western United States is strongly affected by droughts that influence water management decisions. Precipitation that falls in the GB, particularly in the Great Salt Lake (GSL) basin encompassed by the GB, provides water for millions of people living along the Wasatch Front Range. Western U.S. precipitation is known to be influenced by El Niño-Southern Oscillation (ENSO) as well as the Pacific decadal oscillation (PDO) in the North Pacific. Historical connectivity between GB precipitation and Pacific Ocean sea surface temperatures (SSTs) on interannual to multidecadal time scales is evaluated for 20 models that participated in phase 5 of the Coupled Model Intercomparison Project (CMIP5). While the majority of the models had realistic ENSO and PDO spatial patterns in the SSTs, the simulated influence of these two modes on GB precipitation tended to be too strong for ENSO and too weak for PDO. Few models captured the connectivity at a quasi-decadal period influenced by the transition phase of the Pacific quasidecadal oscillation (QDO; a recently identified climate mode that influences GB precipitation). Some of the discrepancies appear to stem from models not capturing the observed tendency for the PDO to modulate the sign of the ENSO-GB precipitation teleconnection. Of all of the models, CCSM4 most consistently captured observed connections between Pacific SST variability and GB precipitation on the examined time scales. © 2015 American Meteorological Society. 资助项目: NSF, National Science Foundation
; NSF, National Science Foundation
; NSF, National Science Foundation
; NSF, National Science Foundation
; NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50820
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric Sciences, University of Utah, Salt Lake City, UT, United States; Department of Plants, Soils and Climate, Utah State University, Logan, UT, United States
Recommended Citation:
Smith K.,Strong C.,Wang S.-Y.. Connectivity between historical great basin precipitation and Pacific ocean variability: A CMIP5 model evaluation[J]. Journal of Climate,2015-01-01,28(15)