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2019年中国近海海洋热浪特征研究

王爱梅 王慧 范文静 骆敬新 李文善 徐珊珊

王爱梅,王慧,范文静,等. 2019年中国近海海洋热浪特征研究[J]. 海洋学报,2021,43(6):35–44 doi: 10.12284/hyxb2021076
引用本文: 王爱梅,王慧,范文静,等. 2019年中国近海海洋热浪特征研究[J]. 海洋学报,2021,43(6):35–44 doi: 10.12284/hyxb2021076
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

2019年中国近海海洋热浪特征研究

doi: 10.12284/hyxb2021076
基金项目: 国家重点研发计划(2016YFC1402610);大气海洋动力环境精细化预报及解释应用技术项目(2017YFC1404203)
详细信息
    作者简介:

    王爱梅(1987—),女,山东省临沂市人,主要从事海洋气候变化研究。E-mail:wam_nmdis@163.com

    通讯作者:

    范文静,研究员。E-mail:13512936280@163.com

  • 中图分类号: P731.11

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

  • 摘要: 海洋热浪是指在一定海域内发生的海表温度异常偏高的现象,海洋热浪的发生会对海洋生态系统的功能与服务产生重大影响。近年来,中国近海海洋热浪频发,引起越来越多的关注。本文利用逐日海表温度观测资料对2019年中国近海海洋热浪特征进行研究分析,结果显示:2019年,在中国近海海南岛周边海域、长江口附近海域、渤海海域和江苏外海海域海洋热浪高发,频次为7~12次;北部湾附近海域海洋热浪发生时间最长,超过150 d。在此基础上,以北部湾海域2−4月经历的一次持续时间长达数月的海洋热浪事件为例,分析了事件期间对应的气温场、气压场以及风场的异常,并进一步分析了北部湾不同季节海洋热浪事件与各气象背景场的对应关系。总体而言,2019年北部湾海域2−4月海洋热浪期间,气温偏高,副热带高压面积偏大、位置偏西偏北,冬季风偏弱,是此海洋热浪发生与维持的重要原因。
  • 图  1  海洋热浪定义简图

    Fig.  1  Schematic of metrics used to define a marine heatwave

    图  2  2019年中国近海海洋热浪事件特征

    a. 发生频次;b. 发生天数;c. 平均强度;d. 最大强度

    Fig.  2  Marine heatwave (MHW) events properties in the China offshore in 2019

    a. MHW frequency; b. days of MHW; c. MHW mean intensity; d. MHW maximum intensity

    图  3  2019年中国近海海洋热浪事件发生天数的四季变化

    a. 春季;b. 夏季;c. 秋季;d. 冬季

    Fig.  3  Days of marine heatwave events at all seasons in the China offshore in 2019

    a. Spring; b. summer; c. autumn; d. winter

    图  4  2019年中国近海海洋热浪事件平均强度四季变化

    a. 春季;b. 夏季;c. 秋季;d. 冬季

    Fig.  4  Marine heatwave events mean intensity at all seasons in the China offshore in 2019

    a. Spring; b. summer; c. autumn; d. winter

    图  5  2019年北部湾海洋热浪事件

    东方海洋站(a)及其临近海域(c)OISST V2数据格点;涠洲海洋站(b)及其临近海域(d)OISST V2数据格点

    Fig.  5  Marine heatwave events reported along the Beibu Gulf in 2019

    Dongfang marine station (a) and the nearest ocean (c) pixel of the OISST V2; Weizhou marine station (b) and the nearest ocean (d) pixel of the OISST V2

    图  6  2019年北部湾净热通量异常变化(向上为正)

    Fig.  6  Anomalous net heat flux at the Beibu Gulf in 2019 (upward is positive)

    图  7  2019年2月西太平洋副高500 hPa位势高度

    黑粗线为2019年5 870 位势米等值线;红虚线为1981–2010年气候态5 870 位势米等值线

    Fig.  7  The 500 hPa potential height of Western Pacific subtropical high in February 2019

    The black solid line indicates the isolines of 5 870 geopotential metre in 2019; the red dashed line indicates the climatic average isolines of 5 870 geopotential metre from 1981 to 2010

    图  8  2019年海洋热浪事件发生时东方海洋站海洋气象要素变化

    红色填充为识别的海洋热浪;蓝色虚线为海洋热浪起止时间;紫色实线为海洋热浪发生时相应要素异常的平均值

    Fig.  8  Properties of ocean meteorological elements observed at Dongfang marine station during marine heatwave (MHW) events in 2019

    The red area indicates MHW indentified; blue dashed lines show start and end of MHW; purple lines show mean elements anomaly during the MHW

    图  9  1980−2019年海洋热浪事件发生时海洋气象要素变化

    a. 东方海洋站;b. 涠洲海洋站

    Fig.  9  Properties of ocean meteorological elements during marine heatwave events from 1980 to 2019

    a. Dongfang marine station; b. Weizhou marine station

    表  1  海洋热浪特征指标

    Tab.  1  Characteristic index of marine heatwave

    指标定义单位
    Ts海洋热浪起始的时间d
    Te海洋热浪结束的时间d
    D海洋热浪持续时间D=TeTsd
    imax海洋热浪最大强度,即热浪期间温度异常的最大值
    imean海洋热浪平均强度,即热浪期间温度异常的平均值
    下载: 导出CSV

    表  2  所用海洋站数据信息

    Tab.  2  Information of marine station’s data used

    序号海洋站站代码要素时间范围
    涠洲WZU海温、气温、气压和风场1980年1月至2019年12月
    东方DFG海温、气温、气压和风场1980年1月至2019年12月
    下载: 导出CSV

    表  3  1980−2019年海洋热浪平均强度与各环境背景场的相关系数统计

    Tab.  3  Statistics of correlation coefficient between marine heatwave mean intensity and environmental background fields during 1980−2019

    季节台站气温气压U分量V分量
    春季东方站0.49*‒0.25*0.24*0.35*
    涠洲站0.51*‒0.43*0.080.13
    夏季东方站0.010.080.05‒0.12
    涠洲站0.47*‒0.050.160.02
    秋季东方站0.60*‒0.49*0.43*0.42*
    涠洲站0.58*‒0.36*‒0.080.23*
    冬季东方站0.48*‒0.110.100.23*
    涠洲站0.36*0.07‒0.030.18*
      注:*表示通过95%显著性检验。
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-05-11
  • 修回日期:  2020-11-15
  • 网络出版日期:  2021-03-30
  • 刊出日期:  2021-06-30

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