Potential effects of global warming on the Sacramento/San Joaquin watershed and the San Francisco estuary

Geophysical Research Letters - Tập 29 Số 18 - 2002
Noah Knowles1, Daniel R. Cayan1,2
1Climate Research Division Scripps Institution of Oceanography USA
2Water Resources Division, U.S. Geological Survey, USA

Tóm tắt

California's primary hydrologic system, the San Francisco estuary and its upstream watershed, is vulnerable to the regional hydrologic consequences of projected global climate change. Projected temperature anomalies from a global climate model are used to drive a combined model of watershed hydrology and estuarine dynamics. By 2090, a projected temperature increase of 2.1°C results in a loss of about half of the average April snowpack storage, with greatest losses in the northern headwaters. Consequently, spring runoff is reduced by 5.6 km3 (∼20% of historical annual runoff), with associated increases in winter flood peaks. The smaller spring flows yield spring/summer salinity increases of up to 9 psu, with larger increases in wet years.

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Geophysical Research Letters

Tập 29 Số 18

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