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Human-induced intensified seasonal cycle of sea surface temperature

Earth Sciences

Human-induced intensified seasonal cycle of sea surface temperature

F. Liu, F. Song, et al.

Discover groundbreaking findings from researchers Fukai Liu, Fengfei Song, and Yiyong Luo, revealing a significant 3.9% global intensification of sea surface temperature seasonal cycles over the past four decades. This study uncovers hotspots of intensification driven by increased greenhouse gases, affecting crucial ocean ecosystems and seasonal oxygen variations.

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Playback language: English
Abstract
This study reveals a 3.9 ± 1.6% global intensification of the sea surface temperature (SST) seasonal cycle over the past four decades (1983–2022), with hotspots like northern subpolar gyres experiencing up to 10% intensification. Increased greenhouse gases are the primary driver, aided by decreased anthropogenic aerosols. These changes lead to shallower mixed layers, reduced thermal inertia, and enhanced SST seasonality. The intensification extends throughout the mixed layer and impacts seasonal oxygen variation, crucial for ocean ecosystems.
Publisher
Nature Communications
Published On
May 10, 2024
Authors
Fukai Liu, Fengfei Song, Yiyong Luo
Tags
sea surface temperature
global intensification
greenhouse gases
mixed layers
ocean ecosystems
seasonal cycle

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