THE IMPACT OF MOUNT PINATUBO ON WORLD‐WIDE TEMPERATURES

THE IMPACT OF MOUNT PINATUBO ON WORLD‐WIDE TEMPERATURES We monitor and model the effects on world‐wide temperatures of the June 1991 volcanic eruption of Mount Pinatubo in the Philippines. Global mean air temperatures were reduced, by up to 0·5°C at the surface and 0·6°C in the troposphere, for some months in mid‐1992, in approximate accord with model predictions. Differences from these predictions occurred in the Northern Hemisphere winters of 1991–1992 and 1992–1993, as a result of atmospheric circulation changes that yielded continental surface warmings not fully reproduced by the model. The effects of the eruption were less evident by 1994. A superposed‐epoch composite for five major tropical eruptions shows significant global post‐eruption cooling at the surface when the effects of the El Ni7o–Southern Oscillation are removed from the data. Stratospheric warmth following Pinatubo lasted until early 1993 according to Microwave Sounding Unit data. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Climatology Wiley

THE IMPACT OF MOUNT PINATUBO ON WORLD‐WIDE TEMPERATURES

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Publisher
Wiley
Copyright
Copyright © 1996 The Royal Meteorological Society
ISSN
0899-8418
eISSN
1097-0088
DOI
10.1002/(SICI)1097-0088(199605)16:5<487::AID-JOC39>3.0.CO;2-J
Publisher site
See Article on Publisher Site

Abstract

We monitor and model the effects on world‐wide temperatures of the June 1991 volcanic eruption of Mount Pinatubo in the Philippines. Global mean air temperatures were reduced, by up to 0·5°C at the surface and 0·6°C in the troposphere, for some months in mid‐1992, in approximate accord with model predictions. Differences from these predictions occurred in the Northern Hemisphere winters of 1991–1992 and 1992–1993, as a result of atmospheric circulation changes that yielded continental surface warmings not fully reproduced by the model. The effects of the eruption were less evident by 1994. A superposed‐epoch composite for five major tropical eruptions shows significant global post‐eruption cooling at the surface when the effects of the El Ni7o–Southern Oscillation are removed from the data. Stratospheric warmth following Pinatubo lasted until early 1993 according to Microwave Sounding Unit data.

Journal

International Journal of ClimatologyWiley

Published: May 1, 1996

References

  • Observed correlations between winter‐mean tropospheric and stratospheric circulation anomalies
    Baldwin, Baldwin; Cheng, Cheng; Dunkerton, Dunkerton
  • Possible regional climate consequences of the Pinatubo eruption: an empirical approach
    Groisman, Groisman
  • Potential climate impact of Mount Pinatubo eruption
    Hansen, Hansen; Lacis, Lacis; Ruedy, Ruedy; Sato, Sato
  • A possible influence of recent polar stratospheric coolings on the troposphere in the Northern Hemisphere winter
    Kodera, Kodera; Yamazaki, Yamazaki
  • Stratospheric temperature increases due to Pinatubo aerosols
    Labitzke, Labitzke; McCormick, McCormick
  • Towards a consistent global climatological rawinsonde data‐base
    Parker, Parker; Cox, Cox
  • Global warmth in 1990
    Parker, Parker; Jones, Jones
  • Winter warming from large volcanic eruptions
    Robock, Robock; Mao, Mao

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