Multi-scale temperature variations and their regional differences in China during the Medieval Climate Anomaly
Multi-scale temperature variations and their regional differences in China during the Medieval Climate Anomaly
复制标题
中世纪气候异常时期中国多尺度气温变化及其区域差异
DOI：
10.1007/s11442-020-1718-7
复制
发表时间：
2020-01
影响因子：
4.9
通讯作者：
Jingyun Zheng
中科院分区：
文献类型：
--
作者：
Zhixin Hao;Maowei Wu;Yang Liu;Xuezhen Zhang;Jingyun Zheng
中世纪气候异常（MCA，AD950-1250）是最近持续数百年的温暖时期，被视为研究全球和区域变暖的影响和适应的参考情景。在本研究中，我们基于高分辨率温度重建和历史文献中的相关冷暖记录，研究了中国四个地区（东北、西北、中东和青藏高原）MCA期间十年至百年尺度的气温变化特征。采用集合经验模态分解方法来分析时间序列。结果表明，对于整个中国来说，近2000年来最长的暖期出现在10-13世纪，尽管12世纪中后期出现了数十年的寒冷期。然而，在初期和末期，不同地区MCA年代际尺度的暖峰和位相并不一致。在年代际尺度上，从950年到1130年，区域温度变化相似；而且，从1130年到1250年，它们的幅度变小，相位也不太一致。在数十年到百年尺度上，这四个地区都在10世纪初开始变暖，并在MCA期间经历了两次寒冷时期。然而，西北地区和中东部地区的暖期结束时间较同步，而东北地区和青藏高原的暖期结束时间约早40-50年。在数百年尺度上，MCA与小冰期的平均气温差异在东北和中东部地区显着，而在西北地区和青藏高原则不显着。与20世纪平均气温相比，中部地区中部偏暖，东北地区偏冷；与此同时，西北地区、青藏高原气温明显偏低。
The Medieval Climate Anomaly (MCA, AD950-1250) is the most recent warm period lasting for several hundred years and is regarded as a reference scenario when studying the impact of and adaptation to global and regional warming. In this study, we investigated the characteristics of temperature variations on decadal-centennial scales during the MCA for four regions (Northeast, Northwest, Central-east, and Tibetan Plateau) in China, based on high-resolution temperature reconstructions and related warm-cold records from historical documents. The ensemble empirical mode decomposition method is used to analyze the time series. The results showed that for China as a whole, the longest warm period during the last 2000 years occurred in the 10th–13th centuries, although there were multi-decadal cold intervals in the middle to late 12th century. However, in the beginning and ending decades, warm peaks and phases on the decadal scale of the MCA for different regions were not consistent with each other. On the inter-decadal scale, regional temperature variations were similar from 950 to 1130; moreover, their amplitudes became smaller, and the phases did not agree well from 1130 to 1250. On the multi-decadal to centennial scale, all four regions began to warm in the early 10th century and experienced two cold intervals during the MCA. However, the Northwest and Central-east China were in step with each other while the warm periods in the Northeast China and Tibetan Plateau ended about 40–50 years earlier. On the multi-centennial scale, the mean temperature difference between the MCA and Little Ice Age was significant in Northeast and Central-east China but not in the Northwest China and Tibetan Plateau. Compared to the mean temperature of the 20th century, a comparable warmth in the MCA was found in the Central-east China, but there was a little cooling in Northeast China; meanwhile, there were significantly lower temperatures in Northwest China and Tibetan Plateau.
登录
查看更多内容
影响因子：
2.2
作者：
Jingyun Zheng;Lingling Ding;Z. Hao;Q. Ge
通讯作者：
Jingyun Zheng;Lingling Ding;Z. Hao;Q. Ge
影响因子：
15.1
作者：
Ge Quanshen
通讯作者：
Ge Quanshen
DOI：
10.1007/s11430-015-5465-y
发表时间：
2017-02
期刊：
Science China Earth Sciences
影响因子：
--
作者：
Meng Wei;F. Qiao
通讯作者：
Meng Wei;F. Qiao
影响因子：
3.6
作者：
Albert Y. Ayenu-Prah;N. Attoh-Okine
通讯作者：
Albert Y. Ayenu-Prah;N. Attoh-Okine
DOI：
--
发表时间：
1999
期刊：
Fudan Journal
影响因子：
--
作者：
Man Zhi
通讯作者：
Man Zhi