Studies of the processing of atmospheric organic compounds by clouds during Whistler Aerosol and Cloud Study (WACS) 2010

Project: Research project

Project Details

Description

Studies of the processing of atmospheric organic compounds by clouds during Whistler Aerosol and Cloud Study (WACS) 2010 Studies of the processing of atmospheric organic compounds by clouds during WACS 2010 Most chemical analysis on WACS samples is completed but extensive data analysis and modeling is needed to maximize insights into cloud chemistry. We propose to pursue 3 objectives. A first objective is to investigate the processing of glyoxal and methylglyoxal during cloud events at Whistler. Aqueous phase concentrations of these species have been measured at Ravens Nest and at the Peak site. Both species have been proposed as SOA and gas phase oxidant (OH, HO2) precursors but little observational data exist. We propose to use numerical modeling to explain the observations in particular the unique ratios between methylglyoxal and glyoxal observed during WACS and compare the observations to studies at locations with different emission scenarios. This work will be done in collaboration with Dr. Barbara Ervens (NOAA) an expert in cloud chemistry modeling. A second objective is the analysis on how carbonaceous aerosol has evolved during the study at Ravens Nest. We use a bulk approach, looking at solubility and molecular weight distribution of the organic matter. We will also use a molecular approach, investigating a few select organic molecular marker species to document changes over time and the potential impact of the cloud episodes. A final objective is the detailed data analysis of all cloud chemistry data from WACS 2010. While chemical analysis has been largely completed at this stage a substantial effort remains to be done in terms of integrating cloud chemistry observations with other data in particular meteorological conditions, gas and particulate phase data.
StatusFinished
Effective start/end date12/19/113/31/13

Funding

  • OTHER: Foreign Government: $110,000.00

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