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Analysis of Langley optical depth data, with aerosol and gas retrievals, for the RSS 103 instrument in Barrow, Alaska

Gianelli, Scott Columbia University - NASA/GISS
Lacis, Andrew NASA/Goddard Institute for Space Studies
Carlson, Barbara NASA/Goddard Institute for Space Studies

Category: Aerosols

Bimodal aerosol retrievals, and high-resolution retrevals of nitrogen dioxide, are performed on the Langley optical depth data from the RSS 103 device that was situated in Barrow, Alaska between March and August in 1999. The results show a higher fine mode aerosol optical depth on average than was retrieved by the RSS 102 at the SGP site. The seasonal cycle is also reversed with high values at Barrow occurring in the spring and low values in the summer. The fine mode effective radius also appears to decrease over the span of the data set. An average NO2 value of 0.18 DU was obtained for the data set, about 1.5 times higher than the value retrieved by GOME over this location for the days in question. Comparisons are then made with the data obtained by the CIMEL and MFRSR located at the Barrow site.

This poster will be displayed at the ARM Science Team Meeting.