HR: 10:45h
AN: U51C-02    [PDF]
TI: Surface-Atmosphere exchanges in urban areas: Observations and models
AU: * Grimmond, S
EM: grimmon@indiana.edu
AF: Sue Grimmond, Indiana University, Blooomington, IN 47405 United States
AU: Oke, T R
EM: toke@ubc.ca
AF: T.R. OKe, University of British Columbia, Vancouver, BC V6T 1W5 Canada
AB: Increasing attention is being directed to the climates of urban areas given a large and increasing proportion of the worlds population live in cities, and urban settings are the locations of some of the most profound human impacts on the natural environment. Although understanding of urban effects on climate is incomplete, over the last decade much has been learnt about how urbanization modifies the climate system at micro, local and meso-scales, and the variability both within and between cities. This paper will attempt to summarize the most significant findings of this research. Data on the fundamental energy, mass and momentum exchanges will be presented from measurements campaigns from cities across North America (Vancouver, Mexico City, Los Angeles, Chicago, Sacramento, Tucson, Oklahoma City, Baltimore); Europe (Lodz, Marseille); and Africa (Ouagadougou), along with results of evaluations of simple (LUMPS-NARP and UK Met-Office) to more complex (TEB) surface-atmosphere exchange schemes, appropriate for use in global circulation, numerical weather prediction, and regional land-atmosphere models.
DE: 1610 Atmosphere (0315, 0325)
DE: 1630 Impact phenomena
DE: 1655 Water cycles (1836)
SC: U
MN: 2003 Fall Meeting