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Geeta G. Persad, Atmospheric and Oceanic Sciences

Aerosols are one of the major stumbling blocks in predicting future climate change. Both their direct interaction with solar radiation and their indirect impact via modification of cloud properties give aerosols the potential to significantly alter the Earth's energy balance and hydrological cycle.

Geeta is interested in using computer modeling and observational resources to provide a comprehensive picture of the large-scale impacts of aerosols on climate, particularly their effect on precipitation. How have aerosols impacted the surface energy budget in the past, and how can we expect them to do so in the future as aerosol emissions change with the evolving energy culture? And what potential does this have to alter precipitation patterns, such as the South Asian monsoon, that affect millions of people?

Relevant Publications

Persad, Geeta G., Yi Ming, V. Ramaswamy, 2012: Tropical Tropospheric-Only Responses to Absorbing Aerosols. J. Climate, 25, 2471–2480, DOI: 10.1175/JCLI-D-11-00122.1

Persad, G., Y. Ming, and V. Ramaswamy, 2011: Tropical Tropospheric-Only Responses to Absorbing Aerosols. In revisions Journal of Climate.

Ming, Y., V. Ramaswamy, and G. Persad, 2011: Two Opposing Effects of Absorbing Aerosols in Global-mean Precipitation. Geophysical Research Letters, 37, L13701, doi:10.1029/2010GL042895.