Global ozone depletion and increase of UV radiation caused by pre-industrial tropical volcanic eruptions.

ABSTRACT: Large explosive tropical volcanic eruptions inject high amounts of gases into the stratosphere, where they disperse globally through the large-scale meridional circulation. There is now increasing observational evidence that volcanic halogens can reach the upper troposphere and lower stratosphere. Here, we present the first study that combines measurement-based data of sulfur, chlorine and bromine releases from tropical volcanic eruptions with complex coupled chemistry climate model simulations taking radiative-dynamical-chemical feedbacks into account. Halogen model input parameters represent a size-time-region-wide average for the Central American eruptions over the last 200 ka ensuring a comprehensive perspective. The simulations reveal global, long-lasting impact on the ozone layer aff

SUBMITTER: Brenna H 

PROVIDER: S-EPMC6603163 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature