首页|Long-term ocean temperature trend and marine heatwaves

Long-term ocean temperature trend and marine heatwaves

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  • 国家科技期刊平台
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  • NSTL
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Marine heatwaves(MHWs)can cause irreversible damage to marine ecosystems and livelihoods.Appropriate MHW characterization remains difficult,because the choice of a sea surface temperature(SST)temporal baseline strongly influences MHW identification.Following a recent work suggesting that there should be a communicating baseline for long-term ocean temperature trends(LTT)and MHWs,we provided an effective and quantitative solution to calculate LTT and MHWs simultaneously by using the ensemble empirical mode decomposition(EEMD)method.The long-term nonlinear trend of SST obtained by EEMD shows superiority over the traditional linear trend in that the data extension does not alter prior results.The MHWs identified from the detrended SST data exhibited low sensitivity to the baseline choice,demonstrating the robustness of our method.We also derived the total heat exposure(THE)by combining LTT and MHWs.The THE was sensitive to the fixed-period baseline choice,with a response to increasing SST that depended on the onset time of a perpetual MHW state(identified MHW days equal to the year length).Subtropical areas,the Indian Ocean,and part of the Southern Ocean were most sensitive to the long-term global warming trend.

marine heatwaves(MHWs)ensemble empirical mode decomposition(EEMD)long-term temperature(LTT)trendtotal heat exposure(THE)

Min ZHANG、Yangyan CHENG、Gang WANG、Qi SHU、Chang ZHAO、Yuanling ZHANG、Fangli QIAO

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First Institute of Oceanography,Ministry of Natural Resources,Qingdao 266061,China

Key Laboratory of Marine Sciences and Numerical Modelling,Ministry of Natural Resources,Qingdao 266061,China

Shandong Key Laboratory of Marine Science and Numerical Modeling,Qingdao 266061,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Shandong ProvinceNational Key Research and Development Program of ChinaProject of"Development of China-ASEAN blue partnership"started in 2021approved Ocean to Climate Seamless Forecasting System Program(OSF)

4182100442276025ZR2021MD0272022YFE0140500

2024

10.1007/s00343-023-3160-z

海洋湖沼学报(英文版)
中国海洋湖沼学会

海洋湖沼学报(英文版)

CSTPCD
影响因子：0.386
ISSN：2096-5508
年,卷(期)：2024.42(4)