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Recent temperature increase recorded in an ice core in the source region of Yangtze River

ISSN号：1000-0690
期刊名称：《地理科学》
时间：0
分类：P467[天文地球—大气科学及气象学] P343.63[天文地球—水文科学;天文地球—地球物理学]
作者机构：[1]Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China, [2]Key Laboratory of Cryosphere and Environment, Chinese Academy of Sciences, Lanzhou 730000, China, [3]Graduate University of Chinese Academy of Sciences, Beijing 100049, China, [4]Climate Change Institute, University of Maine, Orono, ME 04469, USA
相关基金：Supported by the National Natural Science Foundation of China （Grant Nos. 40401054 and 40121101）, the National Basic Research Program of China （Grant No. 2005CB422004）, the ＂Talent Project＂ and Innovation Project of Chinese Academy of Sciences （Grant Nos. KZCX3-SW-339 and 334） and Dean Foundation of Chinese Academy of Sciences

作者： KANG ShiChang[1,2], ZHANG YongJun[1,3], QIN DaHe[2], REN JiaWen[2], ZHANG QiangGong[1,3], Bjorn GRIGHOLM[4], Paul A. MAYEWSKI[4]

关键词：长江源头地区, 冰芯, 青藏高原, 温度升高, Δ^18O记录, ice core δ^18O records, summer temperature variations, source region of Yangtze River, Tibetan Plateau

中文摘要：

自从它是有在西藏的高原(TP ) 上的最大的温暖的一个区域，在长江的来源区域的气候变化上的兴趣被提起了。降水δ ~(18 ) 的 A 70-yearhistory O 用在 Guoqu 冰河在永久积雪区域的小块地部分检索的一个冰核心记录被恢复了(33 ° 3 4 ′ 3 7.8 ″ N， 91 ° 1 0 ′ 3 5.3 ″ E， 5720 m a.s.l ) 。Mt.Geladaindong (长江的来源区域) ，在 2005 年 11 月。由使用在冰核心δ ~(18 ) 之间的一种重要积极关系， O 记录和夏天从附近气象学的车站让温度(到 9 月的 7 月) 通风，夏天空气温度的历史被重建最后 70 年了。夏天温度在 1940 年代和高 in1950s 是相对低的到 1960 年代的中间。最低温度发生在 1970 年代的中间。自从 1990 年代，在 1980 年代并且戏剧性地低的 Temperaturewas 增加了，保留到 the21st 世纪的开始的趋势。与 0.5 ℃/在冰核心记录的温暖的率 10 一后来1970年代高得多那在中央 TP 和北半球( NH )，并且它成为 1.1 ℃/ 10 一后来 1990swhich 从中央 TP 和 NH 也比这些高，反映加速的温暖和对在高举起区域的全球温暖的更敏感的回答。

英文摘要：

Interests on climate change in the source region of Yangtze River have been raised since it is a region with the greatest warming over the Tibetan Plateau （TP）. A 70-year history of preclpltstlon δ^18O has been recovered using an ice core record retrieved In a plat portion of the flrn area In the Guoqu Glacier （33°34＇37.8＂N, 91°10＇35.3＂E, 5720 m a.s.l.）, Mt. Geladaindong （the source region of Yangtze River）, in November, 2005. By using a significant positive relationship between ice core 8180 record and summer air temperature （July to September） from the nearby meteorological ststlons, a history of summer air temperature has been reconstructed for the last 70 years. Summer temperature was relatively low in 1940s and high in 1950s to the middle of 1960s. The lowest temperature occurred In the middle of 1970s. Temperature was low in 1980s and dramatically increased since 1990s, keeping the trend to the beginning of the 21st century. The warming rate recorded in the ice core with 0.5℃/10 a since 197011 Is much higher that that in the central TP and the Northern Hemisphere （Nil）, and it becomes 1.1℃/10 a since 1990s which is also higher than these from the central TP and the Nil, reflecting an accelerated warming and a more sensitive response to global warming in the high elevation region.

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