18th Conference on Climate Variability and Change
20th Conference on Hydrology


How important is land cover change for simulating future climates?

Johannes Feddema, Univ. of Kansas, Lawrence, KS; and L. O. Mearns, K. Oleson, G. Bonan, L. Buja, G. Meehl, and W. M. Washington

Different future land cover patterns, as represented by two IPCC SRES scenarios, lead to contrasting future climate simulations. Conversion of forest to agriculture in the Amazon leads to local warming equivalent to atmospheric forcing effects. In other tropical locations land cover effects on local temperatures are minimized because of differences in large-scale circulation responses. Mid-latitude climate impacts include cooling with agricultural expansion. Daily diurnal temperature ranges are strongly affected over much of the terrestrial surface. These results indicate that choices humans make about future land use could have a significant impact on future climate change in addition to the effect of atmospheric greenhouse gases and aerosols. .

Joint Session 3, Land-Atmosphere Interactions: Land Data, Land Cover, and Land Use Studies (Joint with 18th Conference on Climate Variability and Change and 20th Conference on Hydrology)
Tuesday, 31 January 2006, 8:30 AM-12:30 PM, A314

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