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Historical Perspectives on Exceptional Climatic Years at the Labrador/Nunatsiavut Coast 1780 to 1950
Quaternary Research ( IF 1.7 ) Pub Date : 2020-12-28 , DOI: 10.1017/qua.2020.103
Marie-Michèle Ouellet-Bernier , Anne de Vernal , Daniel Chartier , Étienne Boucher

This interdisciplinary study presents a human perspective on climatic variations by combining documentary, discursive, instrumental, and proxy data. Historical sources were used to characterize climate variations along the coast of Labrador/Nunatsiavut during the 19th century and the first half of the 20th century. Written and early instrumental archives provided original information on the state and perception of climate before the establishment of meteorological stations, which permitted an intra-annual perspective on climatic variations. Written sources depicted the sensitivity of humans to climatic variations. Exceptional seasonal climatic events were extracted from documentary and discursive sources, which were complemented by tree-ring and early instrumental data. From 1780 to 1900, data indicated a succession of relatively warm and cold episodes. Most warm periods were described as stormy and variable. The final part of the studied records showed cold conditions from 1900 to 1925 and warm conditions from 1925 to 1950. Historical sources helped to discriminate a seasonal signal. Mild autumn-winter conditions were recorded since 1910 in relation with positive anomalies of the North Atlantic Oscillation in winter. Relatively warm spring-summer conditions were recorded after 1920, which corresponds to a phase of positive anomaly of the Atlantic Multidecadal Oscillation.

中文翻译:

1780 年至 1950 年拉布拉多/努纳特夏武特海岸特殊气候年份的历史视角

这项跨学科研究通过结合文献、论述、工具和代理数据,提出了关于气候变化的人类观点。历史资料被用来描述 19 世纪拉布拉多/努纳特夏武特沿岸的气候变化th世纪和 20 世纪上半叶th世纪。书面和早期的仪器档案提供了有关气象站建立之前气候状态和感知的原始信息,从而可以对气候变化进行年度内观察。书面资料描述了人类对气候变化的敏感性。异常的季节性气候事件是从文献资料和散文资料中提取的,并辅以树木年轮和早期仪器数据。从 1780 年到 1900 年,数据表明一连串相对温暖和寒冷的事件。大多数温暖时期被描述为暴风雨和多变。研究记录的最后一部分显示了 1900 年至 1925 年的寒冷条件和 1925 年至 1950 年的温暖条件。历史资料有助于区分季节性信号。自 1910 年以来,与冬季北大西洋涛动的正异常有关,记录了温和的秋冬条件。1920 年之后记录了相对温暖的春夏条件,这对应于大西洋多年代际振荡的正异常阶段。
更新日期:2020-12-28
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