Document Type

Article

Publication Title

Geophysical Research Letters

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This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s).

Publication Date

4-15-1996

First Page

837

Last Page

840

Issue Number

8

Volume Number

23

Abstract/ Summary

An ∼6‐year long period of volcanic sulfate recorded in the GISP2 ice core about 71,100 ± 5000 years ago may provide detailed information on the atmospheric and climatic impact of the Toba mega‐eruption. Deposition of these aerosols occur at the beginning of an ∼1000‐year long stadial event, but not immediately before the longer glacial period beginning ∼67,500 years ago. Total stratospheric loading estimates over this ∼6‐year period range from 2200 to 4400 Mt of H2SO4 aerosols. The range in values is given to compensate for uncertainties in aerosol transport. Magnitude and longevity of the atmospheric loading may have led directly to enhanced cooling during the initial two centuries of this ∼1000‐year cooling event.

Citation/Publisher Attribution

G. A., P. A. Mayewski, L. D. Meeker, S. Whitlow, M. S. Twickler, and K. Taylor (1996), Potential atmospheric impact of the Toba Mega‐Eruption ∼71,000 years ago, Geophysical Research Letters, 23(8), 837–840, doi:10.1029/96GL00706. http://www.agu.org/pubs/crossref/1996/96GL00706.shtml

Publisher Statement

© Copyright American Geophysical Union

DOI

10.1029/96GL00706

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In Copyright - Educational Use Permitted.