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Proceedings Paper

Improvement of optical depth relations to PM2.5 concentrations using lidar derived PBL heights
Author(s): S. Chaw; Y. Wu; B. Gross; F. Moshary; S. Ahmed
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Paper Abstract

To provide reasonable forcasts of near surface PM2.5 levels, it necessary that satellite measurments provide a reasonable estimator of PM2.5 which can be coupled to a transport model. Unfortunately this requires that the aerosol be homogeneously mixed and that the extent of the PBL be sufficiently accurate. For example, the IDEA product (Infusing satellite Data into Environmental Applications) used by the EPA relies on a static relationship connecting PM2.5 to MODIS aerosol optical depth (AOD) which relies on a static model of the PBL aerosol height. In this paper, we show that the PBL height is far from static and by taking the variable PBL into account, a better prediction of PM2.5 from the MODIS (AOD) measurements is obtained. In addition, seasonal variations in the microphysical properties are also demonstrated and accounting for the additional variability further improves the PM25/AOD slope predictor.

Paper Details

Date Published: 9 October 2009
PDF: 6 pages
Proc. SPIE 7479, Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing V, 747906 (9 October 2009); doi: 10.1117/12.830664
Show Author Affiliations
S. Chaw, The City College of New York (United States)
Y. Wu, The City College of New York (United States)
B. Gross, The City College of New York (United States)
F. Moshary, The City College of New York (United States)
S. Ahmed, The City College of New York (United States)


Published in SPIE Proceedings Vol. 7479:
Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing V
Upendra N. Singh; Gelsomina Pappalardo, Editor(s)

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