DOI: 10.1007/s00382-015-2798-4
Scopus记录号: 2-s2.0-84940866376
论文题名: Response of closed basin lakes to interannual climate variability
作者: Huybers K. ; Rupper S. ; Roe G.H.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2016
卷: 46, 期: 2017-11-12 起始页码: 3709
结束页码: 3723
语种: 英语
英文关键词: Climate variability
; Great Salt Lake
; Lake modeling
; Lake-level variability
英文摘要: Lakes are key indicators of a region’s hydrological cycle, directly reflecting the basin-wide balance between precipitation and evaporation. Lake-level records are therefore valuable repositories of climate history. However, the interpretation of such records is not necessarily straightforward. Lakes act as integrators of the year-to-year fluctuations in precipitation and evaporation that occur even in a constant climate. Therefore lake levels can exhibit natural, unforced fluctuations that persist on timescales of decades or more. This behavior is important to account for when distinguishing between true climate change and interannual variability as the cause of past lake-level fluctuations. We demonstrate the operation of this general principle for the particular case-study of the Great Salt Lake, which has long historical lake-level and climatological records. We employ both full water-balance and linear models. Both models capture the timing and size of the lake’s historical variations. We then model the lake’s response to much longer synthetic time series of precipitation and evaporation calibrated to the observations, and compare the magnitude and frequency of the modeled response to the Great Salt Lake’s historical record. We find that interannual climate variability alone can explain much of the decadal-to-centennial variations in the lake-level record. Further, analytic solutions to the linear model capture much of the full model’s behavior, but fail to predict the most extreme lake-level variations. We then apply the models to other lake geometries, and evaluate how the timing and amplitude of a lake-level response differs with climatic and geometric setting. A lake’s response to a true climatic shift can only be understood in the context of these expected persistent lake-level variations. On the basis of these results, we speculate that lake response to interannual climate variability may play an important part in explaining much of Holocene lake-level fluctuations. © 2015, Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53721
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Earth and Space Sciences, University of Washington, 4000 15th Ave NE, Box 351310, Seattle, WA, United States; Departments of Geosciences and Environmental Studies, Pacific Lutheran University, Rieke Room 158, Tacoma, WA, United States; Department of Geological Sciences, Brigham Young University, S389 ESC, Provo, UT, United States; Geography Department, University of Utah, 260 Central Campus Dr Rm 270, Salt Lake City, UT, United States
Recommended Citation:
Huybers K.,Rupper S.,Roe G.H.. Response of closed basin lakes to interannual climate variability[J]. Climate Dynamics,2016-01-01,46(2017-11-12)