Threat by marine heatwaves to adaptive large marine ecosystems in an eddy-resolving model
- Ocean University of China (China)
- Ocean University of China (China); Qingdao National Laboratory for Marine Science and Technology (China); International Laboratory for High‐Resolution Earth System Prediction (iHESP), College Station, TX (United States)
- Qingdao National Laboratory for Marine Science and Technology (China); International Laboratory for High‐Resolution Earth System Prediction (iHESP), College Station, TX (United States); Ocean University of China (China)
- International Laboratory for High‐Resolution Earth System Prediction (iHESP), College Station, TX (United States); Ocean University of China (China)
- International Laboratory for High‐Resolution Earth System Prediction (iHESP), College Station, TX (United States); Texas A & M Univ., College Station, TX (United States)
- CSIRO Oceans and Atmosphere (Australia); Ocean University of China (China); Pilot National Laboratory for Marine Science and Technology (China)
- Helmholtz Centre for Environmental Research (Germany); Univ. of Bern (Switzerland)
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- International Laboratory for High‐Resolution Earth System Prediction (iHESP), College Station, TX (United States); National Center for Atmospheric Research (NCAR), Boulder, CO (United States)
- Univ. of Washington, Seattle, WA (United States)
Marine heatwaves (MHWs), episodic periods of abnormally high sea surface temperature, severely affect marine ecosystems. Large marine ecosystems (LMEs) cover ~22% of the global ocean but account for 95% of global fisheries catches. Yet how climate change affects MHWs over LMEs remains unknown because such LMEs are confined to the coast where low-resolution climate models are known to have biases. Here, using a high-resolution Earth system model and applying a ‘future threshold’ that considers MHWs as anomalous warming above the long-term mean warming of sea surface temperatures, we find that future intensity and annual days of MHWs over the majority of the LMEs remain higher than in the present-day climate. Better resolution of ocean mesoscale eddies enables simulation of more realistic MHWs than low-resolution models. These increases in MHWs under global warming pose a serious threat to LMEs, even if resident organisms could adapt fully to the long-term mean warming.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); USDOE Office of Science (SC), Biological and Environmental Research (BER)
- Grant/Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1996334
- Report Number(s):
- PNNL-SA-179101
- Journal Information:
- Nature Climate Change, Journal Name: Nature Climate Change Journal Issue: 2 Vol. 12; ISSN 1758-678X
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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