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Examining the impact of wildfire smoke aerosol on clouds, precipitation, and radiative fluxes in Northern America and Russia using a fully coupled meso-scale model WRF-Chem-SMOKE and satellite data

We developed a fully-coupled meso-scale model WRF-Chem-SMOKE by incorporating a selection of smoke emission models and improving the representations of aerosol-cloud interactions in the microphysics scheme. We find that the difference in smoke emissions between different datasets, even in one fire cluster, could lead to significant discrepancies in modeled AODs. The integrated smoke emission dataset improves the prediction of modeled AODs. We find that the modeled cloud properties and precipitation are extremely sensitive to the smoke loadings. Higher smoke loadings suppress precipitation initially, because of smoke-induced reduction of the collision-coalescence and riming processes, but ultimately cause an invigoration of precipitation.

Identiferoai:union.ndltd.org:GATECH/oai:smartech.gatech.edu:1853/52338
Date2014 August 1900
CreatorsZheng, Lu
ContributorsSokolik, Irina N.
PublisherGeorgia Institute of Technology
Source SetsGeorgia Tech Electronic Thesis and Dissertation Archive
Languageen_US
Detected LanguageEnglish
TypeDissertation

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