Scientists from different universities and governmental institutions are collaborating to investigate trends of mercury in the environment in the Grand Bay area. Many different measurements are needed for a better understanding of the origins and physio-chemical cycling of mercury in the atmosphere.
    At the ground based site, investigators from NOAA's Air Resources Laboratory (ARL) collect data for a suite of measurements which include: elemental, fine particle and reactive gaseous mercury RGM); carbon monoxide, NO/NOY, sulfur dioxide, ozone, aerosol black (soot) carbon, and meteorological variables (e.g., wind speed and direction, ambient temperature, relative humidity, etc.). Scientists from Georgia Institute of Technology's EAS department measure ambient bromine and BrO.  Researchers from Florida State University collect aerosols and rain samples which are analyzed for mercury stable isotope ratios. Finally, scientists from the Canaan Valley Institute and University of Maryland (Frostburg) measure the air-surface exchange of elemental mercury and RGM; deposition of total mercury in rainfall events and in dew fall; and RGM using passive sampling technology.
    Scientists from NOAA/ARL and the University of Miami collaborate with scientists and staff from the University of Tennessee Space Institute to install instrumentation aboard the UTSI Piper Navajo aircraft to measure elemental mercury, ozone, sulfur dioxide, and fine particle loads in the atmosphere. The University of Miami is also deploying coated and uncoated denuder systems for the collection of reactive gaseous mercury and the possible identification of individual RGM species. The Navajo measures a full complement of aircraft systems and atmospheric parameters, including aircraft position, altitude, and attitude; wind speed and direction; temperature; pressure; dew point; and a variety of platform and instrumentation housekeeping signals.






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