Measurements of the evolution of the Mt. Pinatubo aerosol cloud by ISAMS
Abstract
Measurements by the Improved Stratospheric and Mesospheric Sounder (ISAMS) on the Upper Atmosphere Research Satellite (UARS) are being used to study the spatial and temporal evolution of the volcanic stratospheric aerosol from Mt. Pinatubo. The maximum opacity of the aerosol cloud moved from a position south of the Equator at an altitude of about 26 km in early October 1991, became located over the Equator by mid‐January 1992, and descended in altitude to about 21 km by July 1992. Dispersal of the cloud was more rapid in the Southern Hemisphere and penetration to the southern polar region occurred earlier than transport to the corresponding northern polar area. The area weighted global mean stratospheric optical thickness between 15 km and 35 km at 12.1 μm remained at about 5.5×10−3 from November 1991 through to April 1992. The estimated aerosol mass loading is 19–26 megatonnes for this period and by the end of July 1992 it had declined to 15–21 megatonnes.
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Three major volcanic eruptions caused two periods of elevated stratospheric sulfate aerosol (1982-84, 1991-93) with impacts on infra-red brightness temperatures significant for SST retrieval (e.g., >0.03 K).
“Three major volcanic eruptions (El Chichon22; Pinatubo and Hudson23) caused two periods of elevated stratospheric sulfate aerosol (1982–84, 1991–93) with impacts on infra-red brightness temperatures that are significant for SST retrieval24 (e.g., >0.03 K).”
From Satellite-based time-series of sea-surface temperature since 1981 for climate applications (2019) · cites this paper as [23]
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References 20 · Cited by 110
- Authors
- Lambert, A., Grainger, R. G., Remedios, J. J., Rodgers, C. D., Corney, M., & Taylor, F. W.
- Affiliations
- University of Oxford (GB)
- Venue
- Geophysical Research Letters
- Publisher
- American Geophysical Union (AGU)
- Published
- 1993-06-18
- Volume
- 20
- Issue
- 12
- Pages
- 1287-1290
- ISSN
- 0094-8276 (ISSN-L)
- 1944-8007
- OpenAlex
- W2025424009
- Cited by
- 110
- References
- 20
- Citations by year
- 2026: 1 · 2024: 1 · 2023: 1 · 2022: 3 · 2021: 2 · 2020: 4 · 2019: 3 · 2018: 3 · 2017: 3 · 2016: 5 · 2015: 1 · 2014: 5 · 2013: 3 · 2012: 3
- FWCI
- 18.78
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Geophysical Research Letters (publishedVersion)
- Topics
- Physical Sciences › Environmental Science › Global and Planetary Change › Atmospheric aerosols and clouds
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric Ozone and Climate
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric chemistry and aerosols
- Keywords
- Mount Pinatubo eruption, aerosol optical depth, aerosol mass loading, aerosol vertical transport, hemispheric asymmetry (solar and geophysical), ISAMS, UARS
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