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Atmospheric Science & Global Change

PNNL Research using WRF-Chem

photo collage depicting the types of particulates being modeled

Current Research Applications

Instantaneous Aerosol Radiative Forcing, Noon August 31, 2000, Houston, TXAverage Aerosol Radiative Forcing,  August 28-September 1, 2000, Houston, TX

Several scientists in the Atmospheric Science and Global Change Division of the Pacific Northwest National Laboratory use WRF-Chem for their research activities, including:

Jerome Fast, Manish Shrivastava, Rahul Zaveri, and James Barnard: Simulating the evolution of particulates, secondary organic aerosol formation, aerosol optical properties, and radiative forcing using MILAGRO, CARES, and other field campaign measurements [e.g., Fast et al. 2007; 2009]

Larry Berg and Richard Easter: Implementation of a boundary-layer cloud parameterization [Berg and Stull, 2005] to simulate venting and cloud processing of pollutants into free troposphere.

Yun Qian and William Gustafson: Quantifying the impact of subgrid-scale variations of particulates on radiative forcing [Qian et al, 2010].

William Gustafson and Qing Yang: Examining the impact of aerosols on marine stratocumulus over the southeastern Pacific Ocean during the VOCALS field campaign.

Chun Zhao: Evaluating simulated dust on radiative forcing at regional scales using field campaign and satellite data.

Jiwen Fan and Ruby Leung: Examining the impact of anthropogenic aerosols on radiative forcing and precipitation patterns in China.

We also collaborate with scientists at NCAR, NOAA, and several universities in performing research on particulate evolution and aerosol radiative forcing over local and regional scales.

Past Research Applications

William Gustafson and Elaine Chapman: Examine how cloud-aerosol interactions affect the aerosol mass, size distribution, and optical depth downwind of Ohio River valley power-plant stacks and investigate the impact of sub-grid scale aerosol heterogeneity on modeled clouds over spatial scales employed by global climate models [Gustafson et al., 2007; Chapman et al. 2008].

Steve Ghan, Richard Easter, and William Gustafson: Developing the Explicit Clouds - Parameterized Pollutants (ECPP) scheme to better simulate the vertical transport of pollutants within convective clouds predicted by larger-scale models.

Yun Qian and William Gustafson: Simulating the feedback effects resulting from black carbon on snowpacks [Qian et al, 2009] and quantifying the subgrid scale variability of particulates.

Team Members

The following PNNL scientists collaborate in the development of WRF-Chem by implementing various chemistry modules and performing idealized and real-world simulations:

Jerome D. Fast: team leader, model evaluation, process studies
William I. Gustafson Jr.: implementation of modules in WRF-Chem framework, model evaluation, process studies
Elaine G. Chapman: photolysis, emissions
James C. Barnard: radiation, aerosol optical properties
Richard C. Easter: cloud chemistry, wet-removal processes
Rahul A. Zaveri: gas-phase and aerosol process models, aerosol optical properties
Steven J. Ghan: cloud-aerosol interactions, indirect effects, cloud-scale vertical mixing
Manish Shrivastava: secondary organic aerosol formation
Chun Zhao: dust processes, process studies
Jiwen Fan: cloud-aerosol interactions, process studies

WRF-Chem

Atmospheric Science & Global Change

Fundamental & Computational Sciences