In Situ Particle Asymmetry Factor Monitor

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$100,000.00
Award Year:
2011
Program:
SBIR
Phase:
Phase I
Contract:
NNX11CD29P
Award Id:
n/a
Agency Tracking Number:
104626
Solicitation Year:
2010
Solicitation Topic Code:
S1.08
Solicitation Number:
n/a
Small Business Information
45 Manning Road, Billerica, MA, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
030817290
Principal Investigator:
Andrew Freedman
Principal Investigator
(978) 663-9500
af@aerodyne.com
Business Contact:
Andrew Freedman
Business Official
(978) 663-9500
af@aerodyne.com
Research Institution:
Stub




Abstract
Aerosol particles affect the radiative balance of the earth directly, by scattering and absorbing solar and terrestrial radiation, and indirectly, by acting as cloud condensation nuclei. It is now recognized that the atmospheric loading of aerosols generated through human activities can exert an influence on the earth's radiation budget comparable in magnitude with greenhouse gases. However, the uncertainties in the current understanding of aerosol direct and indirect forcing "limit the ability to quantify human influences on climate change". We propose to design, construct and test a monitor suitable for ambient monitoring which is capable of directly measuring the angular distribution of light scattered from the aerosol fraction and therefore the asymmetry parameter, g. The asymmetry parameter, which is a key input parameter in radiative forcing models, cannot at present be measured directly and must be inferred from other measurements.

* information listed above is at the time of submission.

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