| NSF Org: |
AGS Division of Atmospheric and Geospace Sciences |
| Recipient: |
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| Initial Amendment Date: | March 22, 2006 |
| Latest Amendment Date: | March 22, 2013 |
| Award Number: | 0541570 |
| Award Instrument: | Continuing Grant |
| Program Manager: |
David Verardo
AGS Division of Atmospheric and Geospace Sciences GEO Directorate for Geosciences |
| Start Date: | April 1, 2006 |
| End Date: | March 31, 2014 (Estimated) |
| Total Intended Award Amount: | $1,014,883.00 |
| Total Awarded Amount to Date: | $1,194,300.00 |
| Funds Obligated to Date: |
FY 2007 = $324,088.00 FY 2008 = $340,808.00 FY 2009 = $179,417.00 |
| History of Investigator: |
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| Recipient Sponsored Research Office: |
1001 EMMET ST N CHARLOTTESVILLE VA US 22903-4833 (434)924-4270 |
| Sponsor Congressional District: |
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| Primary Place of Performance: |
1001 EMMET ST N CHARLOTTESVILLE VA US 22903-4833 |
| Primary Place of
Performance Congressional District: |
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| Unique Entity Identifier (UEI): |
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| Parent UEI: |
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| NSF Program(s): | Atmospheric Chemistry |
| Primary Program Source: |
0100999999 NSF RESEARCH & RELATED ACTIVIT 01000809DB NSF RESEARCH & RELATED ACTIVIT 01000910DB NSF RESEARCH & RELATED ACTIVIT |
| Program Reference Code(s): |
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| Program Element Code(s): |
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| Award Agency Code: | 4900 |
| Fund Agency Code: | 4900 |
| Assistance Listing Number(s): | 47.050 |
ABSTRACT
The primary objectives of this project are: 1) To characterize major processes controlling the chemical, physical, and optical properties of near-surface aerosols, including elemental and organic carbon (EC/OC), over the western North Atlantic Ocean; 2) To quantify long-term trends in aerosol concentrations and fluxes and assess their influences on climate forcing; and 3) To provide data for and to collaborate with (a) the modeling community to develop reliable predictive capabilities for direct climate forcing by aerosols and (b) the remote sensing community to improve the accuracy of algorithms used to retrieve atmospheric and oceanic information. Super- and sub-micron diameter aerosols will be sampled daily at Bermuda and analyzed for EC/OC, spectrally resolved absorption, major organic and inorganic ions, and mineral aerosol mass. Aerosol light scattering will be measured continuously, and wet-deposition fluxes of major ions and EC/OC will be quantified. In collaboration with NASA, profiles of aerosol backscatter, extinction, and cloud height will be measured continuously. Three-dimensional back trajectories will be calculated and clustered into characteristic transport regimes. Data will be integrated into climatologies of aerosol chemical, physical, and optical properties as a function of transport regime, and long-term trends will be evaluated. Individual cases representative of major regimes will be interpreted in conjunction with satellite-derived humidity and aerosol optical depth fields and infrared (IR) cloud fields.
This effort will enhance efforts to predict the influence of changing aerosol composition on radiative transfer and, in turn, on meteorology and climate. Broader impacts also include training of undergraduate and graduate students in atmospheric chemistry and physics.
PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH
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