Nature Clim. Change 5, 449–453 (2015); published online 30 March 2015; corrected after print 10 June 2015

In the version of this Letter originally published, ref. 9 was incorrectly cited twice; the sentence including the second occurrence should have read: “In contrast to other studies4, we find that the recovery from Mt Pinatubo is stronger than the cooling caused by the small volcanoes that has occurred since the early 2000s.” This error has been corrected in the online versions of the Letter.