A new normal for streamflow in California in a warming climate: Wetter wet seasons and drier dry seasons
A new normal for streamflow in California in a warming climate: Wetter wet seasons and drier dry seasons
复制标题
气候变暖下加利福尼亚州水流的新常态:湿润的雨季和干燥的旱季
DOI:
10.1016/j.jhydrol.2018.10.023
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发表时间:
2018
影响因子:
6.4
通讯作者:
AghaKouchak, Amir
中科院分区:
文献类型:
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作者:
Mallakpour, Iman;Sadegh, Mojtaba;AghaKouchak, Amir
In this study, we investigate changes in future streamflows in California using bias-corrected and routed streamflows derived from global climate model (GCM) simulations under two representative concentration pathways (RCPs): RCP4.5 and RCP8.5. Unlike previous studies that have focused mainly on the mean streamflow, annual maxima or seasonality, we focus on projected changes across the distribution of streamflow and the underlying causes. We report opposing trends in the two tails of the future streamflow simulations: lower low flows and higher high flows with no change in the overall mean of future flows relative to the historical baseline (statistically significant at 0.05 level). Furthermore, results show that streamflow is projected to increase during most of the rainy season (December to March) while it is expected to decrease in the rest of the year (i.e., wetter rainy seasons, and drier dry seasons). We argue that the projected changes to streamflow in California are driven by the expected changes to snow patterns and precipitation extremes in a warming climate. Changes to future low flows and extreme high flows can have significant implications for water resource planning, drought management, and infrastructure design and risk assessment.
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影响因子:
3.9
作者:
Mallakpour, Iman;Villarini, Gabriele;Smith, James A.
通讯作者:
Smith, James A.
影响因子:
5.4
作者:
M. Sadegh;J. Vrugt;Chonggang Xu;E. Volpi
通讯作者:
E. Volpi
影响因子:
5.4
作者:
Huning, Laurie S.;Margulis, Steven A.
通讯作者:
Margulis, Steven A.
影响因子:
3.8
作者:
Pierce, David W.;Cayan, Daniel R.;Hegewisch, Katherine C.
通讯作者:
Hegewisch, Katherine C.
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