Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published April 2000 | public
Journal Article

Regional aerosol optical depth characteristics from satellite observations: ACE-1, TARFOX and ACE-2 results


Analysis of the aerosol properties during 3 recent international field campaigns (ACE-1, TARFOX and ACE-2) are described using satellite retrievals from NOAA AVHRR data. Validation of the satellite retrieval procedure is performed with airborne, shipboard, and land-based sunphotometry during ACE-2. The intercomparison between satellite and surface optical depths has a correlation coefficient of 0.93 for 630 nm wavelength and 0.92 for 860 nm wavelength. The standard error of estimate is 0.025 for 630 nm wavelength and 0.023 for 860 nm wavelength. Regional aerosol properties are examined in composite analysis of aerosol optical properties from the ACE-1, TARFOX and ACE-2 regions. ACE-1 and ACE-2 regions have strong modes in the distribution of optical depth around 0.1, but the ACE-2 tails toward higher values yielding an average of 0.16 consistent with pollution and dust aerosol intrusions. The TARFOX region has a noticeable mode of 0.2, but has significant spread of aerosol optical depth values consistent with the varied continental aerosol constituents off the eastern North American Coast.

Additional Information

This study was funded by grants from Office of Naval Research, the National Science Foundation, and the European Commission. Francisco J. Exposito and Juan P. Diaz of Universidad de La Laguna, Tenerife, Canary Islands graciously provided additional AVHRR files from their archive to supplement the ACE-2 data set. This research is a contribution to the International Global Atmospheric Chemistry (IGAC) Core project of the International Geosphere–Biosphere Programme (IGBP) and is part of the IGAC Aerosol Characterization Experiments (ACE).

Additional details

August 21, 2023
October 25, 2023