Climate forcing by the volcanic eruption of Mount Pinatubo
Article first published online: 11 MAR 2005
Copyright 2005 by the American Geophysical Union.
Geophysical Research Letters
Volume 32, Issue 5, March 2005
How to Cite
2005), Climate forcing by the volcanic eruption of Mount Pinatubo, Geophys. Res. Lett., 32, L05710, doi:10.1029/2004GL022119., and (
- Issue published online: 11 MAR 2005
- Article first published online: 11 MAR 2005
- Manuscript Accepted: 17 FEB 2005
- Manuscript Revised: 20 JAN 2005
- Manuscript Received: 30 NOV 2004
 We determine the volcano climate sensitivity λ and response time τ for the Mount Pinatubo eruption, using observational measurements of the temperature anomalies of the lower troposphere, measurements of the long wave outgoing radiation, and the aerosol optical density. Using standard linear response theory we find λ = 0.15 ± 0.06 K/(W/m2), which implies a negative feedback of −1.4 (+0.7, −1.6). The intrinsic response time is τ = 6.8 ± 1.5 months. Both results are contrary to a paradigm that involves long response times and positive feedback.