| NSF Org: |
AGS Division of Atmospheric and Geospace Sciences |
| Recipient: |
|
| Initial Amendment Date: | December 9, 2004 |
| Latest Amendment Date: | February 9, 2007 |
| Award Number: | 0441836 |
| Award Instrument: | Continuing Grant |
| Program Manager: |
Anne-Marie Schmoltner
AGS Division of Atmospheric and Geospace Sciences GEO Directorate for Geosciences |
| Start Date: | January 1, 2005 |
| End Date: | December 31, 2007 (Estimated) |
| Total Intended Award Amount: | $280,783.00 |
| Total Awarded Amount to Date: | $280,783.00 |
| Funds Obligated to Date: |
FY 2006 = $79,173.00 FY 2007 = $51,292.00 |
| History of Investigator: |
|
| Recipient Sponsored Research Office: |
1000 E UNIVERSITY AVE LARAMIE WY US 82071-2000 (307)766-5320 |
| Sponsor Congressional District: |
|
| Primary Place of Performance: |
1000 E UNIVERSITY AVE LARAMIE WY US 82071-2000 |
| Primary Place of
Performance Congressional District: |
|
| Unique Entity Identifier (UEI): |
|
| Parent UEI: |
|
| NSF Program(s): |
Atmospheric Chemistry, Physical & Dynamic Meteorology |
| Primary Program Source: |
app-0106 app-0107 |
| Program Reference Code(s): |
|
| Program Element Code(s): |
|
| Award Agency Code: | 4900 |
| Fund Agency Code: | 4900 |
| Assistance Listing Number(s): | 47.050 |
ABSTRACT
The primary goal of this project is to improve our understanding of the influence of atmospheric aerosols on climate. In particular, the relationships between aerosol composition and aerosol radiative and cloud droplet activation properties will be tested. The plan is to measure time-dependent variations of aerosol chemical composition across the particle size spectrum, and to examine how that variability affects calculated and measured optical and droplet-nucleating properties of the aerosol, as a function of particle size. An ancillary objective is to compare measurements made in a small urban environment with those at a remote mid-continental site, both in Wyoming. A comprehensive range of aerosol instruments will be employed to measure aerosol composition, size distribution, cloud drop nucleating properties, scattering at three wavelengths, and light absorption. Of particular importance will be the use of an aerosol mass spectrometer to measure the variability of particle size-resolved composition over time scales as short as a few minutes. These measurements, coupled with size distribution measurements, will permit optical and cloud condensation properties of the aerosol to be calculated with a similarly high time resolution, and compared with observations. Analysis of these comparisons will provide estimates of the importance of size and temporal variability of aerosol properties, and, thus, the appropriateness of model estimates which use averages of those properties to describe aerosol behavior.
The analysis of these data sets will contribute to our understanding of the impacts of aerosol on the Earth's atmosphere. Additional broader impacts include capacity building at the University of Wyoming, and the training of a graduate student.
PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH
Note:
When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external
site maintained by the publisher. Some full text articles may not yet be available without a
charge during the embargo (administrative interval).
Some links on this page may take you to non-federal websites. Their policies may differ from
this site.
Please report errors in award information by writing to: awardsearch@nsf.gov.
