This work examines teleconnections between extratropical explosive cyclogenesis and the Antarctic region and its relationship with the Southern Annular Mode (SAM) and with the zonal wave three (ZW3) pattern at the end of October 2016. From 26 to 28 October, an explosive extratropical cyclone developed on the Brazilian southern coast. Then, from the 29th to the 31st, southern Australia, including Tasmania, was hit by an explosive extratropical cyclone originating in the Indian Ocean. Both events caused damages. The year 2016 also stands out as the warmest in the recorded record, both globally and in the Southern Hemisphere; further, in 2016, the smallest Antarctic sea ice extent (SIE) was recorded since 1979. This SIE reduction has been attributed to positive sea surface temperature anomalies, the ZW3 and a SAM negative phase. We reconstructed the geopotential height fields, wind vectors, zonal wind, and temperature using the ERA-Interim reanalysis data. These fields, associated to wave and tidal and wind records, denote that negative SAM and ZW3 influenced both events. This association favored intense cyclogenesis, which included a baroclinic increase in both cases, with well-organized vertical structure; thus, this combination formed meteorological “bombs” as a response to the tropic-pole temperature contrast, and an exceptional atmospheric circulation was observed between subtropical and polar latitudes in 2016.

这项工作研究了温带爆发性气旋与南极地区之间的遥相关性，以及与2016年10月底的南环形模式（SAM）和纬向波三号（ZW3）模式的关系。10月26日至28日，爆发了温带爆发性气旋在巴西南部海岸开发。然后，从29日到31日，包括塔斯马尼亚岛在内的澳大利亚南部遭到了起源于印度洋的爆发性温带气旋的袭击。这两个事件均造成损害。在全球和南半球，2016年也是有记录以来最热的一年；此外，自1979年以来，记录到的南极海冰范围（SIE）最小，这是由于海表温度正异常，ZW3和SAM负相造成的。我们使用ERA-Interim重新分析数据重建了地势高度场，风向矢量，纬向风和温度。这些与波浪，潮汐和风记录相关的字段表示负SAM和ZW3影响了这两个事件。这种联系有利于强烈的回旋作用，这两种情况都包括斜压上升，且垂直结构井井有条。因此，这种组合形成了气象“炸弹”，作为对热带极温度反差的响应，2016年在亚热带和极地纬度之间观察到异常的大气环流。这种联系有利于强烈的回旋作用，这两种情况都包括斜压上升，且垂直结构井井有条。因此，这种组合形成了气象“炸弹”，作为对热带极温度反差的反应，2016年在亚热带和极地纬度之间观测到异常的大气环流。这种联系有利于强烈的回旋作用，这两种情况都包括斜压上升，且垂直结构井井有条。因此，这种组合形成了气象“炸弹”，作为对热带极温度反差的反应，2016年在亚热带和极地纬度之间观测到异常的大气环流。