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Future Amplification of Sea Surface Temperature Seasonality Due To Enhanced Ocean Stratification

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Title
Future Amplification of Sea Surface Temperature Seasonality Due To Enhanced Ocean Stratification
Author(s)
Anila Rani Jo; June-Yi Lee; Axel Timmermann; Jin, Fei-Fei; Ryohei Yamaguchi; Gallego, Angeles
Publication Date
2022-05
Journal
Geophysical Research Letters, v.49, no.9
Publisher
John Wiley and Sons Inc
Abstract
© 2022. The Authors.In many regions the projected future sea surface temperature (SST) response to greenhouse warming is larger in summer than in winter. What causes this amplification of the SST seasonal cycle has remained unclear. To determine robustness of the projected seasonal cycle intensification and ascertain underlying physical mechanisms we analyze a suite of historical and greenhouse warming simulations conducted with 13 coupled general circulation models in the Coupled Model Intercomparison Project Phase 5. In the Representative Concentration Pathway 8.5 scenario, the amplitude of SST seasonal cycle, defined as the difference between climatological maximum and minimum temperature, increases by 30% ± 20% on average by the end of 21st century. Analysis of a simplified mixed layer heat budget demonstrates that the amplification can be attributed to the increasing upper ocean stratification and hence shoaling of the annual-mean mixed layer. The projected intensification of SST seasonality may have important implications for future changes in marine ecosystems.
URI
https://pr.ibs.re.kr/handle/8788114/11941
DOI
10.1029/2022GL098607
ISSN
0094-8276
Appears in Collections:
Center for Climate Physics(기후물리 연구단) > 1. Journal Papers (저널논문)
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