HR: 1330h
AN: H32C-0592    [PDF]
TI: Hydrologic Impacts of Climate Variability and Land Use in Africa
AU: * Li, K Y
EM: kaiyuanli@wisc.edu
AF: Center for Sustainability and the Global Environment, University of Wisconsin-Madison, 1710 University Avenue, Madison, WI 53726 United States
AU: Coe, M T
EM: mtcoe@wisc.edu
AF: Center for Sustainability and the Global Environment, University of Wisconsin-Madison, 1710 University Avenue, Madison, WI 53726 United States
AU: Ramankutty, N
EM: nramanku@facstaff.wisc.edu
AF: Center for Sustainability and the Global Environment, University of Wisconsin-Madison, 1710 University Avenue, Madison, WI 53726 United States
AB: The hydrologic cycle in the semi-arid regions of Africa is highly variable. Sustainable water resource management requires the assessment of the hydrological impacts of climate variability and land use changes. As part of a larger study we are using two numerical models the Integrated BIosphere Simulator (IBIS) and the Hydrological Routing Algorithm (HYDRA), to investigate the relative impacts of the three major determinants of the observed changes in terrestrial hydrology in Africa: (1) climate variability, (2) land use, land cover change, and (3) water management practices. Based on both historical climate fluctuations and hypothetical scenarios, this study focused on addressing how climate variation and land use changes affect the hydrologic regime in Lake Chad Basin and Niger River Basin, including (a) hydrologic sensitivity and vulnerability to climate fluctuations; (b) hydrologic response to a variety of scenarios of temperature increases and precipitation increases or decreases; and (c) hydrologic impacts of different vegetation types and land use scenarios. Possible future hydrological regimes and consequences of the existing climate variability and land use practices were also discussed.
DE: 1655 Water cycles (1836)
DE: 1803 Anthropogenic effects
DE: 1818 Evapotranspiration
DE: 1860 Runoff and streamflow
DE: 9305 Africa
SC: Hydrology [H]
MN: 2003 Fall Meeting