Schollaert, S. E. University of Rhode Island, s.schollaert@gso.uri.edu
Yoder, J. A. University of Rhode Island, j.yoder@gso.uri.edu
Merrill, J. T. University of Rhode Island, jmerrill@boreas.gso.uri.edu

 
CHARACTERIZING SATELLITE-DERIVED AEROSOL OPTICAL THICKNESSES IN THE NORTH ATLANTIC WITH GROUND-TRUTH AEROSOL CONCENTRATIONS
 
The concentrations of four aerosol species measured at three North Atlantic sites have been analyzed. Aerosols have been filtered daily since 1993 at Miami, Barbados, and Bermuda and were provided by the University of Miami for this study. Mineral dust, non-sea-salt sulfate, sulfate, and nitrate concentrations were measured. For each day, the dominant aerosol species was determined. Using an air parcel trajectory analysis calculated back 10 days at 12 hour increments, the likely source region for the dominant aerosol was identified from a probability analysis. Information about the aerosol source region and transport path is currently being used to characterize satellite-derived aerosol optical thicknesses (AOT) over the North Atlantic using Advanced Very High Resolution Radiometer (AVHRR) AOT. Seasonal averages of the two-dimensional satellite-derived AOT maps will be generated for the five years coincident with the concentration data. Interannual comparisons will be made in an effort to understand the spatial and temporal variability of aerosol outbreaks and transport. Future work will incorporate these aerosol characterizations with Ocean Color measurements (e.g. POLDER, OCTS, SeaWiFS).
 
Day: Tuesday, Feb. 2
Time:
Location: Sweeney Center
 
Code: SS43TU0383S