83rd Annual

Tuesday, 11 February 2003: 3:30 PM
The effects of microscale and mesoscale landscape heterogeneity on weather and climate (Invited Presentation)
Roni Avissar, Duke University, Durham, NC; and C. P. Weaver, R. R. Silva, S. Baidya Roy, and D. Werth
We use a mixture of simulations, ground observations and satellite images to demonstrate the effects of landscape heterogeneity at the microscale and mesoscale on the hydrometeorology and the hydroclimate of various regions in North and South America. These heterogeneities can organize turbulence and convection at the microscale and can generate mesoscale circulations which can significantly affect precipitation distribution and intensity. As a result of regional change in hydrometeorological processes, there is the possibility of teleconnection outside of the region of generation.

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