Open AccessCross-Basin Decadal Climate Regime Connecting the Colorado River with the Great Salt Lake
Author(s) -
S. Y.Simon Wang,
Robert R. Gillies,
Oi Yu Chung,
Chaopeng Shen
Publication year - 2018
Publication title -
journal of hydrometeorology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.733
H-Index - 123
eISSN - 1525-755X
pISSN - 1525-7541
DOI - 10.1175/jhm-d-17-0081.1
Subject(s) - hydrometeorology , environmental science , hydrology (agriculture) , precipitation , watershed , drainage basin , climate change , structural basin , elevation (ballistics) , water year , predictability , water resources , climatology , geology , oceanography , geography , meteorology , ecology , physics , geometry , geotechnical engineering , cartography , mathematics , quantum mechanics , machine learning , computer science , paleontology , biology
The 2013 federal Colorado River Basin Water Supply and Demand Study projected the water imbalance between future supply and demand to increase. The Colorado water supply (WS) exemplifies a pronounced quasi-decadal oscillation (QDO) of 10–20 years throughout its historical record; however, this QDO feature is unaccounted for in the climate models used to project the future WS. Adjacent to the Colorado River, the large watershed of the Great Salt Lake (GSL) in Utah records the hydrologic QDO signal in its water surface, leading previous studies to explore the cause of decadal fluctuations in the lake elevation and assess predictability. This study reports a remarkable coherence between the Colorado WS and the GSL elevation at the 10–20-yr time scale. Analysis of precipitation and terrestrial water storage anomalies suggests a cross-basin connection in the climate and hydrometeorological variations of the Colorado WS and the GSL. The 160-yr-long and well-kept GSL elevation record makes it an effective indicator for the Colorado WS.