Articles | Volume 23, issue 24
https://doi.org/10.5194/acp-23-15491-2023
https://doi.org/10.5194/acp-23-15491-2023
Research article
 | 
19 Dec 2023
Research article |  | 19 Dec 2023

The impact of ENSO and NAO initial conditions and anomalies on the modeled response to Pinatubo-sized volcanic forcing

Helen Weierbach, Allegra N. LeGrande, and Kostas Tsigaridis

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The impact of ENSO and NAO initial conditions and anomalies on the modeled response to Pinatubo-sized forcing NASA Center for Climate Simulation H. Weierbach https://portal.nccs.nasa.gov/datashare/giss-publish/pub/paleoclimate/weierbach_et_al_2023/

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Short summary
Volcanic aerosols impact global and regional climate conditions but can vary depending on pre-existing initial climate conditions. We ran an ensemble of volcanic aerosol simulations under varying ENSO and NAO initial conditions to understand how initial climate states impact the modeled response to volcanic forcing. Overall we found that initial NAO conditions can impact the strength of the first winter post-eruptive response but are also affected by the choice of anomaly and sampling routine.
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