HR: 0800h
AN: B41A-0174    [Abstracts]
TI: Urban Sprawl Impacts on the Carbon and Water Cycles in the United States
AU: * Milesi, C
EM: cristina.milesi@gmail.com
AF: California State University Monterey Bay, 100 Campus Drive, Seaside, CA 93955 United States
AU: Potter, C
EM: cpotter@mail.arc.nasa.gov
AF: NASA Ames, MS 242-4, Moffett Field, CA 94035 United States
AU: Elvidge, C
EM: chris.elvidge@noaa.gov
AF: NOAA/National Geophysical Data Center, 325 Broadway, Boulder, CO 80305 United States
AU: Nemani, R
EM: rama.nemani@nasa.gov
AF: NASA Ames, MS 242-4, Moffett Field, CA 94035 United States
AB: As recurrent construction booms keep expanding the urban suburban areas in the continental United States with the typical low-density pattern often referred to as sprawl, so is the amount of urban vegetation. Irrigation and fertilization treatments common for most of the lawns and trees of the American urban and suburban landscape result in urban areas maintaining a significant role in the terrestrial carbon cycle, but at a high cost in resources, especially water. Here we analyze almost a decade (1992/93-2000) of urban land development in the conterminous US inferred from the nighttime citylights data from DMSP/OLS. We use EOS NDVI data and the NASA-CASA model to provide a spatially explicit assessment of the contribution of urban areas to the continental net primary productivity and compare it to pre-urban and potential conditions. We also present an assessment of the amount of water resources required to maintain current levels of urban net primary productivity.
UR: http://ecocast.arc.nasa.gov/research/ids.html
DE: 0414 Biogeochemical cycles, processes, and modeling (0412, 0793, 1615, 4805, 4912)
DE: 0428 Carbon cycling (4806)
DE: 0480 Remote sensing
DE: 0493 Urban systems
SC: Biogeosciences [B]
MN: Fall Meeting 2005