DOI: 10.1175/2011JCLI4225.1
Scopus记录号: 2-s2.0-84863251482
论文题名: Multidecadal drought cycles in the great basin recorded by the Great Salt Lake: Modulation from a transition-phase teleconnection
作者: Wang S.-Y. ; Gillies R.R. ; Reichler T.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 5 起始页码: 1711
结束页码: 1721
语种: 英语
Scopus关键词: Atmospheric circulation anomaly
; Circulation anomalies
; Control simulation
; Coupled models
; Data sets
; Decadal variability
; Drought cycles
; Great Basin
; Great Salt Lake
; Gulf of Alaska
; Inter-decadal pacific oscillations
; Lake level fluctuations
; Meteorological condition
; Moisture fluxes
; North American
; Reanalysis
; Sea surface temperature
; Sea surface temperature (SST)
; Spectral coherence
; Statistical evidence
; Teleconnections
; Transition point
; Twentieth century
; Wave train
; Wet-dry cycle
; Atmospheric temperature
; Climatology
; Computer simulation
; Phase shift
; Phase shifters
; Drought
; atmospheric circulation
; decadal variation
; drought
; lake level
; sea surface temperature
; teleconnection
; Great Salt Lake
; Gulf of Alaska
; Pacific Ocean
; United States
; Utah
英文摘要: This study investigates the meteorological conditions associated with multidecadal drought cycles as revealed by lake level fluctuation of the Great Salt Lake (GSL). The analysis combined instrumental, proxy, and simulation datasets, including the Twentieth Century Reanalysis version 2, the North American Drought Atlas, and a 2000-yr control simulation of the GFDL Coupled Model, version 2.1 (CM2.1). Statistical evidence from the spectral coherence analysis points to a phase shift amounting to 6-9 yr between the wet-dry cycles in the Great Basin and the warm-cool phases of the interdecadal Pacific oscillation (IPO). Diagnoses of the sea surface temperature and atmospheric circulation anomalies attribute such a phase shift to a distinctive teleconnection wave train that develops during the transition points between the IPO's warm and cool phases. This teleconnection wave train forms recurrent circulation anomalies centered over the southeastern Gulf of Alaska; this directs moisture flux across the Great Basin and subsequently drives wet-dry conditions over the Great Basin and the GSL watershed. The IPO life cycle therefore modulates local droughts-pluvials in a quarter-phase manner. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52526
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Utah Climate Center, Department of Plants, Soils, and Climate, Utah State University, Logan, UT, United States; Department of Atmospheric Sciences, University of Utah, Salt Lake City, UT, United States
Recommended Citation:
Wang S.-Y.,Gillies R.R.,Reichler T.. Multidecadal drought cycles in the great basin recorded by the Great Salt Lake: Modulation from a transition-phase teleconnection[J]. Journal of Climate,2012-01-01,25(5)