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Winter warming from large volcanic eruptionsAn examination of the Northern Hemisphere winter surface temperature patterns after the 12 largest volcanic eruptions from 1883-1992 shows warming over Eurasia and North America and cooling over the Middle East which are significant at the 95-percent level. This pattern is found in the first winter after tropical eruptions, in the first or second winter after midlatitude eruptions, and in the second winter after high latitude eruptions. The effects are independent of the hemisphere of the volcanoes. An enhanced zonal wind driven by heating of the tropical stratosphere by the volcanic aerosols is responsible for the regions of warming, while the cooling is caused by blocking of incoming sunlight.
Document ID
19930040390
Document Type
Reprint (Version printed in journal)
Authors
Robock, Alan (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Mao, Jianping (Maryland Univ. College Park, United States)
Date Acquired
August 16, 2013
Publication Date
December 24, 1992
Publication Information
Publication: Geophysical Research Letters
Volume: 19
Issue: 24
ISSN: 0094-8276
Subject Category
METEOROLOGY AND CLIMATOLOGY
Funding Number(s)
CONTRACT_GRANT: NAG5-1835
CONTRACT_GRANT: NSF ATM-89-20590
Distribution Limits
Public
Copyright
Other