Observing and Understanding the Variability of Water in Weather and Climate


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.

Session 3, Weather and climate modeling of water in all its phases
Tuesday, 11 February 2003, 1:30 PM-5:30 PM

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