Study on characteristics of marine heatwave in the China offshore in 2019

Wang Aimei; Wang Hui; Fan Wenjing; Luo Jingxin; Li Wenshan; Xu Shanshan

doi:10.12284/hyxb2021076

Volume 43 Issue 6

Jun. 2021

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Wang Aimei，Wang Hui，Fan Wenjing, et al. Study on characteristics of marine heatwave in the China offshore in 2019[J]. Haiyang Xuebao，2021, 43(6)：35–44 doi: 10.12284/hyxb2021076

Citation:

Wang Aimei，Wang Hui，Fan Wenjing, et al. Study on characteristics of marine heatwave in the China offshore in 2019[J]. Haiyang Xuebao，2021, 43(6)：35–44 doi: 10.12284/hyxb2021076

Citation:

Wang Aimei，Wang Hui，Fan Wenjing, et al. Study on characteristics of marine heatwave in the China offshore in 2019[J]. Haiyang Xuebao，2021, 43(6)：35–44 doi: 10.12284/hyxb2021076

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Study on characteristics of marine heatwave in the China offshore in 2019

doi: 10.12284/hyxb2021076

National Marine Data and Information Service, Tianjin 300171, China

Received Date: 2020-05-11
Rev Recd Date: 2020-11-15

Available Online: 2021-03-30

Publish Date: 2021-06-30

Abstract

Abstract

Marine heatwave, considered as events with prolonged anomalously high sea surface temperature in certain sea areas. The occurrence of marine heatwave could impact the function and service of marine ecosystem. In recent years, the marine heatwave in the China offshore become more frequent, and attract considerable attention. Used a range of ocean temperature data including daily satellite observations and daily in situ measurements, we analysised the characteristics of marine heatwave in the China offshore in 2019. Results show that in 2019, the frequency of marine heatwave is higher in the sea areas around Hainan Island, the Changjiang River Estuary, the Bohai Sea and the sea areas off Jiangsu Province, with the frequency of 7−12 times. The marine heatwave duration in the Beibu Gulf lasts the longest, more than 150 days. In addition, took the classical marine heatwave that last from February to April in Beibu Gulf as an example, anomaly characteristics of air temperature, sea level pressure and wind during the event period were investigated specifically and the corresponding relationships between the marine heatwave and meteorological background fields in different seasons in Beibu Gulf was further studied. On the whole, the higher air temperature, weaker East Asian winter monsoon, larger area and the northward and westward extension of subtropical high are the important factors for the occurrence and maintenance of the marine heatwave in the Beibu Gulf in the early 2019.
- marine heatwave,
- climate change,
- China offshore,
- sea surface temperature

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References(31)

References

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