Impact of seasonality on climate outcomes for mid latitude marine cloud brightening

Emme, E., Chen, C., Horowitz, H. M.. (2025). Impact of seasonality on climate outcomes for mid latitude marine cloud brightening. Geophysical Research Letters, doi:https://doi.org/10.1029/2025GL115359

Title Impact of seasonality on climate outcomes for mid latitude marine cloud brightening
Genre Article
Author(s) E. Emme, Chih-Chieh Chen, H. M. Horowitz
Abstract Most previous studies on marine cloud brightening (MCB) have focused on deployment over the subtropical stratocumulus cloud decks which persistently result in non‐uniform cooling and disruption of the El Niño Southern Oscillation (ENSO). A recent study demonstrated that MCB deployment over mid‐latitudes, instead, could alleviate such side effects. Here, with the Community Earth System Model version 2 (CESM2), we investigate the impact of seasonality on the mid‐latitude MCB deployment strategy. Specifically, efficacy of MCB, induced response in surface temperature and precipitation patterns, and ENSO are examined. The results suggest that (a) single hemisphere MCB deployment in midlatitude regions shifts the Intertropical Convergence Zone (ITCZ) and (b) midlatitude MCB deployment over both hemispheres during fall and winter delivers climate outcomes with the least side effects.
Publication Title Geophysical Research Letters
Publication Date Jun 28, 2025
Publisher's Version of Record https://doi.org/10.1029/2025GL115359
OpenSky Citable URL https://n2t.net/ark:/85065/d7kk9h8g
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