Mathematics – Logic
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufm.p22b..02c&link_type=abstract
American Geophysical Union, Fall Meeting 2005, abstract #P22B-02
Mathematics
Logic
0300 Atmospheric Composition And Structure, 0305 Aerosols And Particles (0345, 4801, 4906), 0322 Constituent Sources And Sinks, 0365 Troposphere: Composition And Chemistry, 1029 Composition Of Aerosols And Dust Particles
Scientific paper
Windblown dust can reduce visibility and create a health hazard. Current dust models, such as CARMA, are used to predict the atmospheric dust aerosol loading during dust storms. However, size-fractionated aerosol measurements are needed to improve and validate the aerosol generation portions of the models. Therefore, from April 19 through May 23, 2005, two size-fractionated (8 size bins between 10 and 0.07 microns in aerodynamic diameter) drum aerosol impactors were deployed on and downwind of a playa at the White Sands Missile Range in New Mexico to collect aerosol samples to help determine the size and amount of dust particles generated as a function of wind speed. The aerosol samplers were co-located with meteorological sensors and passive blowing dust/sand collectors. The meteorological data for the sampling period, including wind speed and direction, were provided by the Meteorological Division of the White Sands Missile Range. The mass, elemental composition and optical absorption of the aerosols collected during the study are correlated with wind speed and other meteorological parameters to determine the emission, as a function of size, of dust aerosols at different wind speeds. This data will be used to initialize and/or validate dust models, calculate the visibility degradation associated with a given aerosol loading, and help predict the effects of dust aerosols on humans.
Cahill Catherine F.
Cahill Thomas A.
Ellison E.
Emmert S. P.
Gill T. E.
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