Mechanisms and Impacts of Anomalous High-Salinity Shelf Water Formation in the Ross Sea
编号:144 访问权限:仅限参会人 更新:2025-11-06 17:10:36 浏览:6次 口头报告

报告开始:暂无开始时间(Asia/Shanghai)

报告时间:暂无持续时间

所在会场:[暂无会议] [暂无会议段]

暂无文件

摘要
High-salinity shelf water (HSSW) acts as a precursor to the Antarctic Bottom Water and plays a critical role in regulating the global ocean circulation system. This study employs a high-resolution coupled ocean–sea ice–ice shelf model to analyze the interannual variation in HSSW formation in the Ross Sea, which is one of the major production sites of HSSW. We are particularly focused on anomalously high HSSW production during the winter of 2007. The results indicate that, in this winter, there were frequent passages of synoptic-scale cyclones that were centered near the front of the Ross Ice Shelf. The western flanks of these cyclones significantly enhanced offshore winds over the western Ross Ice Shelf Polynya, a major origin site of HSSW in the Ross Sea, leading to a sharp increase in ice production within this polynya. The HSSW formation resulting from brine rejection during ice freezing reached the highest volume of 16 000 km3 in 2007. However, the salinity and density of the Ross Sea during this period exhibited unexpectedly low values. This inconsistency was due to a rapid increase in ice shelf melting over the Amundsen Sea and Ross Sea during 2006–2007, with annual cumulative melt rates reaching a peak in recent decades. Meanwhile, the resulting large amount of meltwater was transported westward into the Ross Sea by notably strong slope and coastal currents in 2007, leading to large fluxes of freshwater flux into the Ross Sea. The interaction between enhanced HSSW formation driven by ice production and the large influx of meltwater highlights the complex dynamics that shape hydrographic variability in the Ross Sea.
关键词
High Salinity Shelf Water, Coastal Polynyas, Ross Sea
报告人
Xiaoqiao Wang
Associate Professor National University of Defense Technology

稿件作者
Xiaoqiao Wang National University of Defense Technology
Zhaoru Zhang Shanghai Jiao Tong University
Chuan Xie Shanghai Jiao Tong University
Xi Zhao Sun Yat Sen University
Chuning Wang Shanghai Jiao Tong University
Heng Hu Shanghai Jiao Tong University
Yuanjie Chen Shanghai Jiao Tong University
发表评论
验证码 看不清楚,更换一张
全部评论
重要日期
  • 会议日期

    11月20日

    2025

    11月24日

    2025

  • 11月10日 2025

    初稿截稿日期

  • 11月24日 2025

    注册截止日期

主办单位
太平洋科学协会
承办单位
Shantou University
Xiamen University
联系方式
移动端
在手机上打开
小程序
打开微信小程序
客服
扫码或点此咨询