Saved in:
| Main Authors: | , |
|---|---|
| Format: | Recurso digital |
| Language: | |
| Published: |
Zenodo
2025
|
| Online Access: | https://doi.org/10.5281/zenodo.17835716 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Table of Contents:
- Ocean gyres, vast systems of circulating ocean currents, play a crucial role in global heat and carbon distribution. This study investigates their propensity to act as geographic hotspots for concurrent marine heatwave (MHW) and ocean acidification (OA) extreme events. Utilizing a comprehensive dataset integrating satellite observations for sea surface temperature and biogeochemical model outputs for ocean pH and aragonite saturation state from 1982 to 2023, we quantify the frequency, intensity, and duration of individual and concurrent MHW and OA extremes across the major global ocean gyres. Our analysis reveals that regions within these gyres, particularly their western boundary current extensions and central convergence zones, exhibit significantly higher occurrences and prolonged durations of concurrent extreme conditions compared to the surrounding open ocean. Enhanced stratification, reduced ventilation, and longer water residence times within gyres appear to be key physical mechanisms contributing to the accumulation of heat and anthropogenic carbon dioxide, thereby amplifying the local expression of these extreme events. These findings underscore the critical vulnerability of gyre-associated ecosystems and the urgent need for targeted research and conservation strategies in these climatically sensitive regions.