Community Research and Development Information Service - CORDIS


Urban areas affect prevailing mesoscale and synoptic flow patterns due to a variety of physical processes, including urban heat island induced accelerations, surface roughness induced decelerations, and building barrier effects. Analysis of data collected over New York City has shown that the city is capable of significantly altering the speed and/or direction of movement of thunderstorm cells, sea breeze fronts, and synoptic fronts. Analyses of these effects points to an urban barrier effect divergence as the most significant factor altering the movement of mesoscale systems. Results from a series of simulations using the URBMET/TVM model are presented to illustrate the different contributions to the observed urban divergence effect over the city, arising from the various urban and coastal influences listed above.

Additional information

Authors: BORNSTEIN R, San Jose State University, California (US);THUNIS P, University of Louvain, Institute of Astronomy and Geophysics, Louvain-la-Neuve (BE)
Bibliographic Reference: Paper presented: 7th Brazilian Meteorological Congress, Sao Paulo (BR), Sept. 28 - Oct. 2, 1992
Availability: Available from (1) as Paper EN 37260 ORA
Record Number: 199310099 / Last updated on: 1994-11-29
Original language: en
Available languages: en