Simulating volcanic climate impacts
Title: Simulating volcanic climate impacts
SNIC Project: SNIC 2014/1-119
Project Type: SNAC Medium
Principal Investigator: Rodrigo Caballero <>
Affiliation: Stockholms universitet
Duration: 2014-04-29 – 2015-03-01
Classification: 10501


I am planning to investigate the role of high-latitude volcanic eruption on climate. In doing so, I would like to run the Earth System Model NorESM. The plan is to look at the impact on climate of such eruptions according to the seasons in which they will happen with an ensemble approach. The ensemble approach is necessary given the natural internal variability of the system and in order to identify the volcano signal is necessary to create a “climatology” of the volcanic eruption for a given eruption. Therefore, it is necessary to have at least 30 ensemble members for each eruption (4 seasons: 4x30 → 120 ensemble members). We also need a climatology of that specific year we have decided to simulate the volcano eruption because each year has some specific initial conditions (e.g., ENSO state) that will make it different from the climatology. Hence, 30 ensemble members with no volcano will become necessary. Finally, some preliminary results have shown that the climate takes more than the 3-4 years that have been thought to fully recover. Therefore, each member needs to be run at least for 7-10 years.