Calendar Event Details

610 Atmospheres Seminar: Susan C. van den Heever

Affiliation: Colorado State University
Event Date: Thursday, February 21, 2013

Location: B33:H114
Time: 3:30 PM

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The Impacts of Dust on the Microphysical and Dynamical Characteristics of Deep Convective Storms

Dust, a highly ubiquitous aerosol, may serve as both cloud condensation nuclei (CCN) and ice nuclei (IN). As such, the presence of dust can have a significant impact on the warm and mixed-phase microphysical processes of deep convective systems. These processes may in turn influence the dynamical characteristics of such storms, thereby establishing feedbacks between cloud microphysical and dynamical processes. Such feedbacks are evident in the strength of the convective updraft, the intensity of the evaporatively-produced cold pool and subsequent secondary convection, and the anvil dynamics and associated subsidence and gravity wave response. The focus of this talk will be on the impacts of dust on the feedbacks between microphysical and dynamical processes in deep convective storms, for storms ranging from supercells and squall lines through to tropical and extratropical cyclones. Results from cloud resolving simulations and CloudSat data will be presented.

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Posted or updated: Tuesday, February 5, 2013

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