Articles | Volume 20, issue 1
Research article
10 Jan 2020
Research article |  | 10 Jan 2020

Surface temperature response to the major volcanic eruptions in multiple reanalysis data sets

Masatomo Fujiwara, Patrick Martineau, and Jonathon S. Wright

Data sets

ERA-40, Monthly Means of Daily Means ECMWF

ERA Interim, Monthly Means of Daily Means ECMWF

Japanese 25-year Reanalysis Project, Monthly Means Central Research Institute of Electric Power Industry/Japan, and Japan Meteorological Agency/Japan

MERRA-2 tavgM_2d_slv_Nx: 2d GMAO (Global Modeling and Assimilation Office)

NOAA Extended Reconstructed Sea Surface Temperature (ERSST), Version 5. Boyin Huang, Peter W. Thorne, Viva F. Banzon, Tim Boyer, Gennady Chepurin, Jay H. Lawrimore, Matthew J. Menne, Thomas M. Smith, Russell S. Vose, and Huai-Min Zhang

GES DISC GMAO (Global Modeling and Assimilation Office)

Monthly ERSSTv5, 1981–2010 base period NOAA

Penticton/Ottawa 2800 MHz Solar Flux NOAA

20th Century Reanalysis V2c data NOAA/OAR/ESRL PSD

CERA-20C, Monthly Means of Daily Means ECMWF

JRA-55 Japan Meteorological Agency

Short summary
The global response of surface air temperature (SST) to the eruptions of Mount Agung in 1963, El Chichón in 1982, and Mount Pinatubo in 1991 is investigated using 11 global atmospheric reanalysis data sets. Multiple linear regression is applied, with a set of climatic indices orthogonalized, and the residuals are investigated. It is found that careful treatment of tropical SST variability is necessary to evaluate the surface response to volcanic eruptions in observations and reanalyses.
Final-revised paper