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          Institute: MPI für Meteorologie     Collection: Atmosphere in the Earth System     Display Documents



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ID: 423771.0, MPI für Meteorologie / Atmosphere in the Earth System
Limited temperature response to the very large AD 1258 volcanic eruption
Authors:Timmreck, C.; Lorenz, S.; Crowley, T. J.; Kinne, S.; Raddatz, T.; Thomas, A. M.; Jungclaus, J.
Language:English
Date of Publication (YYYY-MM-DD):2009
Title of Journal:Geophysical Research Letters
Journal Abbrev.:Geophys. Res. Letts.
Volume:36
Sequence Number of Article:L21708
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:The large AD 1258 eruption had a stratospheric sulfate load approximately ten times greater than the 1991 Pinatubo eruption. Yet surface cooling was not substantially larger than for Pinatubo (~0.4 K). We apply a comprehensive Earth System Model to demonstrate that the size of the aerosol particles needs to be included in simulations, especially to explain the climate response to large eruptions. The temperature response weakens because increased density of particles increases collision rate and therefore aerosol growth. Only aerosol particle sizes substantially larger than observed after the Pinatubo eruption yield temperature changes consistent with terrestrial Northern Hemisphere summer temperature reconstructions. These results challenge an oft-held assumption of volcanic impacts not only with respect to the immediate or longer-term temperature response, but also any ecosystem response, including extinctions.
External Publication Status:published
Document Type:Article
Communicated by:Carola Kauhs
Affiliations:MPI für Meteorologie/Atmosphere in the Earth System
MPI für Meteorologie/Ocean in the Earth System
Identifiers:DOI:10.1029/2009GL040083
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