DOI: 10.1002/2015GL065841
论文题名: Placing the 2012-2015 California-Nevada drought into a paleoclimatic context: Insights from Walker Lake, California-Nevada, USA
作者: Hatchett B.J. ; Boyle D.P. ; Putnam A.E. ; Bassett S.D.
刊名: Geophysical Research Letters
ISSN: 0094-9393
EISSN: 1944-9124
出版年: 2015
卷: 42, 期: 20 起始页码: 8632
结束页码: 8640
语种: 英语
英文关键词: drought
; paleoclimate
Scopus关键词: Climate models
; Drought
; Lakes
; Water resources
; Climate condition
; Coupled waters
; Future climate
; Hydrologic response
; Lake evaporation
; Medieval Climate Anomaly (MCA)
; Paleoclimates
; Past and present
; Climate change
; carbon isotope
; climate variation
; coupling
; drought
; evaporation
; future prospect
; hydrological response
; lake level
; Medieval
; paleoclimate
; proxy climate record
; water budget
; water resource
; watershed
; California
; Nevada
; United States
; Walker Lake
; Walker River
英文摘要: Assessing regional hydrologic responses to past climate changes can offer a guide for how water resources might respond to ongoing and future climate change. Here we employed a coupled water balance and lake evaporation model to examine Walker Lake behaviors during the Medieval Climate Anomaly (MCA), a time of documented hydroclimatic extremes. Together, a 14C-based shoreline elevation chronology, submerged subfossil tree stumps in the West Walker River, and regional paleoproxy evidence indicate a ~50 year pluvial episode that bridged two 140+ year droughts. We developed estimates of MCA climates to examine the transient lake behavior and evaluate watershed responses to climate change. Our findings suggest the importance of decadal climate persistence to elicit large lake-level fluctuations. We also simulated the current 2012-2015 California-Nevada drought and found that the current drought exceeds MCA droughts in mean severity but not duration. Key Points Model-proxy comparisons in terminal lake basins contextualize past and present hydroclimates Climate conditions require decadal persistence to elicit complete lake-level oscillations The current CA-NV drought exceeds past droughts in mean severity but not duration © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946605785&doi=10.1002%2f2015GL065841&partnerID=40&md5=dcc4dde4b59c602cdf735346a643b9b0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9008
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Geography, University of Nevada, Reno, Reno, NV, United States
Recommended Citation:
Hatchett B.J.,Boyle D.P.,Putnam A.E.,et al. Placing the 2012-2015 California-Nevada drought into a paleoclimatic context: Insights from Walker Lake, California-Nevada, USA[J]. Geophysical Research Letters,2015-01-01,42(20).