Shortwave aerosol optical depth of Arctic haze measured on board the NOAA WP-3D during AGASP-II,April 1986 |
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| Authors: | Ellsworth G Dutton John J DeLuisi Gary Herbert |
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| Institution: | (1) Geophysical Monitoring for Climatic Change Air Resources Laboratory, NOAA, 325 Broadway, 80303 Boulder, CO, U.S.A. |
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| Abstract: | Measurements of spectral aerosol optical depth in the Alaskan and Canadian Arctic were made from the NOAA Lockheed WP-3D aircraft as part of the second Arctic Gas and Aerosol Sampling Program (AGASP-II) during April 1986. The flight tracks and altitudes flown enabled measurements of the vertical and horizontal distribution of aerosol optical depth in the troposphere as well as direct determination of the stratospheric component. Tropospheric aerosol optical depth ranged from about 0.1 to 0.7. The factor of 7 variability sometimes occurred within 50 km horizontally; comparable variability occurred within less than 1 to 2 km vertically. The Angstrom exponents of the spectral optical depths ranged from 0.5 to 2.0, and some of the variability was apparently related to distinct aerosol regimes. |
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| Keywords: | Arctic aerosol optical depth Arctic haze aerosol extinction |
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