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首页> 外文会议>International Symposium on Cryospheric Indicators of Global Climate Change >A late-winter to early-spring temperature reconstruction for southeastern Norway from 1758 to 2006
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A late-winter to early-spring temperature reconstruction for southeastern Norway from 1758 to 2006

机译：从1758年到2006年到2006年挪威的早春温度重建早期冬天

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Systematic temperature observations were not undertaken in Norway until the early 19th century, and even then only sporadically. Climate-proxy data may be used to reconstruct temperatures before this period, but until now there have not been any climate proxies available for late winter. This situation has recently changed, as a diary containing historical ice break-up data from a farm near lake Randsfjord in southeastern Norway has been discovered. These data, together with observations from lake Mj?sa in the same region, make it possible to reconstruct temperature back to 1758. The reconstructed series, combined with instrumental series from the area near the lake, were merged into one composite time series covering the period 1758-2006. The lowest temperatures are seen during the Dalton sunspot minimum in the early 19th century. The 20th century was 1.3°C warmer than the 19th century, whereas the 19th century was 0.4°C warmer than the last 43 years of the 18th century. During the period 1758-1850, the mean temperature was 1.4°C lower than the mean value of the 20th century. The warmth observed in the 1990s and at the start of the 21st century is unprecedented during the whole series.
机译：直到19世纪初，挪威未在挪威进行系统的温度观察，甚至只偶尔。气候代理数据可用于在此期间之前重建温度，但到目前为止，冬季较晚的任何气候代理都没有任何可用的气候代理。这种情况最近发生了改变，作为挪威东南部兰德斯峡湾附近的农场的历史冰分手数据的日记。这些数据以及来自同一区域中的MJ？SA的观察，可以将温度重建回1758.重建系列，与湖泊附近的区域的乐器系列相结合，合并为一个复合时间序列覆盖期限为1758 - 2006年。在19世纪初的Dalton Sunspot期间，最低的温度是最低的。 20世纪比19世纪温暖了1.3°C，而19世纪比18世纪的过去43年更温暖。在1758-1850期间，平均温度低于20世纪的平均值1.4°C。在20世纪90年代和21世纪初观察到的温暖在整个系列期间前所未有。

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