A Multimillennial Temperature Reconstruction from Far Northeastern Eurasia

摘要ATM-9709661 Hughes，Malcolm K. 亚利桑那大学题目：欧亚大陆远东北部的多千年温度重建 该奖项支持重建欧亚大陆东北部夏季温度的年度分辨率历史。 这是北极最大的纵向扇区的中心，没有这样的记录。 来自Lena-Indigurka沿海低地的落叶松树的年轮包含非常清晰和强烈的夏季温度信号。 大约66%的夏季温度的变化是由树轮系列，有理由期待增加最大晚材密度数据将增加这一点。 该地区的树木年轮系列已经建立到公元1200年，温度重建到公元1400年。 保存在永久冻土中的木材被认为是来自几个更早的时期，特别是公元前一千年和公元前一千年。 将这一重建扩展到两千年或更长的时间，将使北极夏季条件下的自然气候变率能够放在从年际到百年的时间尺度上。

Abstract ATM-9709661 Hughes, Malcolm K. University of Arizona Title: A Multimillennial Temperature Reconstruction from Far North-Eastern Eurasia This award supports the reconstruction of an annual resolution history of summer temperature in far north-eastern Eurasia. This is at the center of the largest longitudinal sector of the Arctic lacking such a record. The annual rings of larch trees from the Lena-Indigurka coastal lowlands contain a remarkably clear and strong summer temperature signal. Approximately 66% of the variance of summer temperature is accounted for by the tree ring series, and there is reason to expect adding maximum latewood density data will increase this. A tree-ring series for this region has already been established back to AD 1200, and a temperature reconstruction back to AD 1400. Wood preserved in permafrost has been identified as being from several earlier periods, particularly the first millennium AD and the first millennium BC. Extending this reconstruction to two or more thousand years length will allow natural climate variability in Arctic summer conditions to be placed in the context of time scales from interannual to centennial.