Detection of volcanic influence on global precipitation

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Abstract

Observations of terrestrial precipitation from the latter half of the 20th century are compared with precipitation simulated by the Parallel Climate Model to determine which external forcings have had a detectable influence on precipitation. Consistent with a previous study using another model, we found that the global mean response to all forcings combined was significantly correlated with that observed. A detection and attribution analysis applied to the simulated and observed precipitation indicated that the volcanic signal is detectable both on its own and in a multiple regression with other forcings. These results are consistent with the hypothesis that shortwave forcings exert a larger influence on precipitation than longwave forcings. Copyright 2004 by the American Geophysical Union.

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Gillett, N. P., Weaver, A. J., Zwiers, F. W., & Wehner, M. F. (2004). Detection of volcanic influence on global precipitation. Geophysical Research Letters, 31(12). https://doi.org/10.1029/2004GL020044

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