PM2.5 estimation from MODIS and GASP AOD
This product estimates daily surface PM2.5 during sun-lit time over the United States using AOD from MODIS and GASP.
Daily AOD is first
derived from MODIS Terra, Aqua, and GASP east with following criteria: use average AOD from Terra and Aqua in areas
where MODIS AOD from both satellite instruments is available; use AOD from MODIS in areas where MODIS AOD is available
from only one MODIS instrument; use average AOD in areas where MODIS AOD is not available but GASP AOD from GOES east
is available (only use data between 12UTC and 22UTC).
We use the linear regression relations over ten EPA-defined regions and four seasons derived in Zhang et al. (2009)
to calculate surface PM2.5 from daily average AOD (sun-lit time).
Reference
Zhang, H., Hoff, R.M., Engel-Cox, J.A. 2009: The relation between Moderate Resolution Imaging Spectroradiometer (MODIS)
aerosol optical depth and PM2.5 over the United States: a geographical comparison by EPA regions, J.Air & Waste Manage. Assoc., in press.
Print this page Close window
|