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

来自美国两家主要海洋研究机构的研究人员将进一步调查东部罗斯海环流的上层海洋对所谓的南极偶极气候模式(ADP)太平洋部分内海-海-冰-大气反馈的反应。ADP是在海冰覆盖和海洋表面温度中观察到的气候变化的年际模式。这种变异性表现为太平洋(例如罗斯海)和南大洋大西洋部分(例如威德尔海)异常之间的不同阶段关系。ADP还可能与太平洋中部/东部出现的气候异常有关(例如，厄尔尼诺南方涛动，ENSO)。将开展的活动包括在东部罗斯海环流的太平洋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米)分层和速度。通过在系泊平台顶部部署冰剖面声纳信标，将对海冰覆盖范围和厚度进行配置测量。在部署期间，德国的同步努力将继续，并扩大韦德尔环流的补充测量。总的测量努力有望增加我们对南大洋在半球海气冰系统中的作用的理解，以及与全球尺度气候变异性的联系。

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.