Collaborative Research: Sampling the Ocean - Sea Ice Interaction in the Pacific Center of the Antarctic Dipole

合作研究：对南极偶极子太平洋中心的海洋-海冰相互作用进行采样

• 批准号: 0739509
• 负责人: Xiaojun Yuan
• 金额: $ 90万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-06-01 至 2014-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0739509&HistoricalAwards=false
• 关键词: Collaborative; Research; Sampling; Ocean; Sea

Researchers from two leading US oceanographic institutions are to further investigate the response of the upper ocean of the eastern Ross Sea gyre to the ocean- sea ice - atmosphere feedbacks within the Pacific sector of the so-called 'Antarctic Dipole' climate pattern (ADP). The ADP is an interannual mode of climate variability observed in both sea ice cover and sea surface temperature. This variability appears as an out-of-phase relationship between anomalies in the Pacific (e.g. Ross Sea) and Atlantic sectors of the southern ocean (e.g. Weddell Sea). The ADP may also be linked to climatological anomalies seen in the central/eastern Pacific (e.g. El Nino Southern Oscillation, ENSO). Activities to take place include the deployment of moorings in the region of the Pacific ADP center in the eastern Ross Sea gyre to resolve upper ocean(50~500m) stratification and velocity over timescales ranging from daily to the interannual. By deploying ice profiling sonar beacons at the top of the moorings, collocated measurements of sea-ice coverage and thickness will be made. During the deployment period, simultaneous German efforts will continue and extend complementary measurements in the Weddell gyre. The total measurement effort promises to increase our understanding of the southern ocean's role in both the hemispheric air-sea ice system, and the connections to global scale climate variability.

来自美国两个主要海洋学机构的研究人员将进一步研究罗斯海东部环流的上层海洋对所谓的“南极偶极子”气候模式（ADP）太平洋部分内海洋-海冰-大气反馈的响应。ADP是在海冰覆盖和海表温度中观测到的气候变率的年际模态。这种变化表现为太平洋（如罗斯海）和南大洋大西洋（如威德尔海）异常之间的异相关系。ADP也可能与中/东太平洋的气候异常有关（例如厄尔尼诺南方涛动）。将开展的活动包括在罗斯海东部环流的太平洋ADP中心区域部署系泊设备，以解决从每日到年际的时间尺度上的上层海洋（50~ 500 m）分层和速度。通过在系泊设备顶部部署冰剖面声纳信标，将对海冰覆盖范围和厚度进行同位测量。在部署期间，德国将继续同时努力，并扩大在威德尔环流的补充测量。总的测量工作有望增加我们对南大洋在半球气海冰系统中的作用以及与全球尺度气候变化的联系的理解。