Differences in the decadal trend in the winter surface temperature in the northern and southern Antarctic Peninsula have been analysed. Time series from the two stations Esperanza and Faraday/Vernadsky since the early 1950s are used. The two time series are strongly correlated only during the 1980s and 1990s when their variability and trends are associated with both the Niño-4 region and Southern Annular Mode impacts. The winter cooling at the Faraday/Vernadsky station contrasts with the winter warming at the Esperanza station during the period of 2006–17. The different temperature trends are accompanied by weak correlations between the temperatures at these two stations. Linearly congruent components of the station temperature trends in 2006–17 indicate a dominant contribution of Southern Annular Mode (tropical sea surface temperature anomalies) to warming (cooling) in the northern (southern) Peninsula. Distinctive impacts of climate modes are observed in combination with the recent deepening of the negative sea-level pressure anomaly to the west of the peninsula and the related change in the zonal and meridional wind components. These factors apparently contribute to the occurrence of the boundary that crosses the peninsula and divides it into sub-regions with warming and cooling.

中文翻译：

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南极半岛北部和南部的冬季气候变化

分析了南极半岛北部和南部冬季地表温度的年代际变化趋势。使用自 1950 年代初以来来自 Esperanza 和 Faraday/Vernadsky 两个站的时间序列。这两个时间序列仅在 1980 年代和 1990 年代具有很强的相关性，此时它们的变异性和趋势与 Niño-4 区域和南部环形模式的影响有关。Faraday/Vernadsky 站的冬季降温与 2006-17 年期间 Esperanza 站的冬季变暖形成鲜明对比。不同的温度趋势伴随着这两个站的温度之间的弱相关性。2006-17 年台站温度趋势的线性全等分量表明南部环形模式（热带海面温度异常）对北部（南部）半岛变暖（冷却）的主要贡献。结合最近半岛西部负海平面压力异常的加深以及纬向和经向风分量的相关变化，观察到气候模式的独特影响。这些因素显然促成了跨越半岛的边界的出现，并将其划分为具有变暖和变冷的子区域。结合最近半岛西部负海平面压力异常的加深以及纬向和经向风分量的相关变化，观察到气候模式的独特影响。这些因素显然促成了跨越半岛的边界的出现，并将其划分为具有变暖和变冷的子区域。结合最近半岛西部负海平面压力异常的加深以及纬向和经向风分量的相关变化，观察到气候模式的独特影响。这些因素显然促成了跨越半岛的边界的出现，并将其划分为具有变暖和变冷的子区域。