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Science 27 August 1993:
Vol. 261. no. 5125, pp. 1155 - 1158
DOI: 10.1126/science.261.5125.1155
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Articles

Ozone and Aerosol Changes During the 1991-1992 Airborne Arctic Stratospheric Expedition

Edward V. Browell 1, Carolyn F. Butler 2, Marta A. Fenn 2, William B. Grant 1, Syed Ismail 1, Mark R. Schoeberl 3, Owen B. Toon 4, Max Loewenstein 4, and James R. Podolske 4

1 Atmospheric Sciences Division, NASA Langley Research Center, Hampton, VA 23681
2 Science Applications International Corporation, Hampton, VA 23666
3 NASA Goddard Space Flight Center, Greenbelt, MD 20771
4 NASA Arnes Research Center, Moffett Field, CA 94035

Stratospheric ozone and aerosol distributions were measured across the wintertime Arctic vortex from January to March 1992 with an airborne lidar system as part of the 1992 Airborne Arctic Stratospheric Expedition (AASE II). Aerosols from the Mount Pinatubo eruption were found outside and inside the vortex with distinctly different distributions that clearly identified the dynamics of the vortex. Changes in aerosols inside the vortex indicated advection of air from outside to inside the vortex below 16 kilometers. No polar stratospheric clouds were observed and no evidence was found for frozen volcanic aerosols inside the vortex. Between January and March, ozone depletion was observed inside the vortex from 14 to 20 kilometers with a maximum average loss of about 23 percent near 18 kilometers.

Submitted on February 19, 1993
Accepted on July 13, 1993


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Metastable Phases in Polar Stratospheric Aerosols.
L. E. Fox, S. C. Wofsy, D. R. Worsnop, and M. S. Zahniser (1995)
Science 267, 351-355
   Abstract »    PDF »
Probing Stratospheric Ozone.
J. M. Rodriguez (1993)
Science 261, 1128-1129
   PDF »
Ozone Loss Inside the Northern Polar Vortex During the 1991-1992 Winter.
M. H. Proffitt, K. Aikin, J. J. Margitan, M. Loewenstein, J. R. Podolske, A. Weaver, K. R. Chan, H. Fast, and J. W. Elkins (1993)
Science 261, 1150-1154
   Abstract »    PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)