Tuesday, 25 January 2011: 2:15 PM
608 (Washington State Convention Center)
Semi-arid lands, especially those located in mid-latitude inner continental regions, are some of the most sensitive areas to global warming. In this study, the semi-arid climate change is simulated to reveal the regional effects of observed global warming over the past decades by using an offline Noah-MP land surface model with a focus on the land surface variables, including soil temperature, soil moisture, and sensible heat and latent heat fluxes. Global warming would cause a decrease in the effective precipitation of the region, leading to reduced soil moisture and a concomitant decrease in vegetation density on the landscape. Under the influence of global climate change and human activity, large areas of vegetation were destroyed, which would consequently cause the surface temperature increasing. A series of numerical simulations will be presented to show the effects of changes in land cover and meteorological conditions on the semi-arid land surface state and flux variables.
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