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SAGE II measurements of early Pinatubo aerosols

McCormick, M. P., Veiga, R. E.·1992·Geophysical Research Letters

Abstract

SAGE II satellite measurements of the Mt. Pinatubo eruption cloud in the stratosphere during June, July, and early August 1991 show that aerosols in the tropics reached as high as 29 km altitude with most of the cloud between 20 and 25 km. The most optically thick portions of the cloud covered latitudes from 10°S to 30°N during the early part of this period. By late July, high stratospheric optical depths were observed to at least 70°N, with the high values north of about 30°N from layers below 20 km. High pressure systems in both hemispheres were observed to be correlated with the movement of volcanic material at 21 km into the westerly jet stream at high southern latitudes and similarly to high northern latitudes at 16 km. By August, the entire Southern Hemisphere had experienced a 10‐fold increase in optical depth relative to early July due to layers above 20 km. Initial mass calculations using SAGE II data place the aerosol produced from this eruption at 20 to 30 megatonnes, well above the 12 megatonnes produced by El Chichon.

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Metadata

Authors
McCormick, M. P., & Veiga, R. E.
Venue
Geophysical Research Letters
Published
1992-01-24
Volume
19
Issue
2
Pages
155-158
ISSN
  • 0094-8276 (ISSN-L)
  • 1944-8007
OpenAlex
W2148333531
Cited by
369
References
6
FWCI
78.04
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: SAGE II measurements of early Pinatubo aerosols. https://app.cochat.ai/papers/10.1029/91gl02790
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McCormick, M. P., & Veiga, R. E. (1992). SAGE II measurements of early Pinatubo aerosols. Geophysical Research Letters. https://doi.org/10.1029/91gl02790

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