DOI: 10.1016/j.quascirev.2016.09.017
Scopus记录号: 2-s2.0-84993940287
论文题名: Magnitude and frequency of wet years under a megadrought climate in the western Great Basin, USA
作者: Hatchett B.J. ; Boyle D.P. ; Garner C.B. ; Kaplan M.L. ; Putnam A.E. ; Bassett S.D.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 152 起始页码: 197
结束页码: 202
语种: 英语
英文关键词: Great Basin
; Interannual variability
; Megadrought
; Paleohydrology
; Terminal lake
; Western United States
Scopus关键词: Atmospheric movements
; Lakes
; Moisture
; Precipitation (meteorology)
; Great Basin
; Interannual variability
; Megadrought
; Paleo-hydrology
; Terminal lakes
; Western United States
; Climate models
; annual variation
; climate variation
; drought
; frequency-magnitude distribution
; hydrological modeling
; lake evolution
; lowstand
; moisture transfer
; paleohydrology
; precipitation (climatology)
; return period
; wet season
; Great Basin
; Nevada
; United States
; Walker Lake
英文摘要: Megadroughts are not devoid of interannual precipitation variability. However, the frequency and magnitude of occasional wet years must be limited in order to be consistent with geologic evidence indicating terminal lake lowstands during past megadroughts. We present a series of hydrologic model simulations of Walker Lake, a western Great Basin terminal lake, where varying return intervals of increased cool-season (October–April) precipitation are superimposed upon a megadrought climate. Estimated megadrought lowstands are achieved with wetter years returning every 5–10 years. Total cool season moisture transport derived from the 20th Century Reanalysis between 1895 and 2012 A.D. was positively correlated with cool-season precipitation during the corresponding year (0.49, p < 0.01). Daily moisture transport exceeding the 95th percentile is used as a surrogate for atmospheric river events. Wetter (drier) years had a greater (lesser) fraction of total cool season transport occurring on atmospheric river days, indicating their important role in driving western Great Basin hydroclimate variability. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59403
Appears in Collections: 过去全球变化的重建
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作者单位: Division of Atmospheric Sciences, Desert Research Institute, 2215 Raggio Parkway, Reno, NV, United States; Department of Geography, University of Nevada, MS 0154, North Virginia Street, Reno, NV, United States; School of Earth and Climate Sciences and Climate Change Institute, University of Maine, Orono, ME, United States; Lamont-Doherty Earth Observatory of Columbia University, 61 Rt 9W, Palisades, NY, United States
Recommended Citation:
Hatchett B.J.,Boyle D.P.,Garner C.B.,et al. Magnitude and frequency of wet years under a megadrought climate in the western Great Basin, USA[J]. Quaternary Science Reviews,2016-01-01,152