HR: 0800h
AN: GC11A-0136    [Abstracts]
TI: Past and Future Changes in Water Availability
AU: * Alltop, J L
EM: jla2126@columbia.edu
AF: Columbia University, 2880 Broadway, New York, NY 10025, United States
AB: A steadily increasing population and water demand in the Western United States, an area historically prone to severe droughts, coupled with increased aridity due to warming may lead to increased drought severity and consistency over the next hundred years. A global time series of future drought indices created from output of multiple GCMs is examined and compared with historic data. Potential physical mechanisms for changes in the conformity of future droughts to historic droughts, associated with an altered hydrologic cycle, are explored, and the potential impacts are reviewed.
DE: 1630 Impacts of global change (1225)
DE: 1637 Regional climate change
DE: 1807 Climate impacts
DE: 1817 Extreme events
DE: 3305 Climate change and variability (1616, 1635, 3309, 4215, 4513)
SC: Global Environmental Change [GC]
MN: 2007 Fall Meeting