Analysis of aerosol extinction profiles obtained by the spaceborne SAGE II sensor reveals that there was an anomalous increase of aerosol extinction below 18.5 km at latitudes poleward of 50°N from July 28 to September 9, 1990. This widespread increase of aerosol extinction in the lower stratosphere was apparently due to a remote high‐latitude volcanic eruption that has not been reported to date. The increase in stratospheric optical depth in the northern polar region was about 50% in August and had diminished by October 1990. This eruption caused an increase in stratospheric aerosol mass of about 0.33 × 105 tons, assuming the aerosol was composed of sulfuric acid and water. Copyright 1994 by the American Geophysical Union.
CITATION STYLE
Yue, G. K., Veiga, R. E., & Wang, P. ‐H. (1994). SAGE II observations of a previously unreported stratospheric volcanic aerosol cloud in the northern polar summer of 1990. Geophysical Research Letters, 21(6), 429–432. https://doi.org/10.1029/93GL03376
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