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冰川冻土 ›› 2017, Vol. 39 ›› Issue (1): 43-53.doi: 10.7522/j.issn.1000-0240.2017.0006

• 冰冻圈与全球变化 • 上一篇    下一篇

利用树轮密度重建新疆北部5-8月温度变化

陈峰, 袁玉江, 魏文寿, 喻树龙, 尚华明, 张同文, 张瑞波, 王慧琴   

  1. 中国气象局 乌鲁木齐沙漠气象研究所 树轮年轮理化研究重点开放实验室/新疆树木年轮生态实验室, 新疆 乌鲁木齐 830002
  • 收稿日期:2016-07-16 修回日期:2016-11-15 出版日期:2017-02-25 发布日期:2017-06-03
  • 作者简介:陈峰(1982-),男,福建沙县人,博士,副研究员,2015年在兰州大学获博士学位,从事树轮气候水文研究.E-mail:feng653@163.com.
  • 基金资助:
    国家自然科学基金项目(41405081);中央级公益性科研院所基本科研业务费项目(IDM201202;IDM2017002);国家重点基础研究发展计划项目(2010CB951001);自治区青年科技创新人才培养工程(qn2015yx040);中国气象局气象部门青年英才计划资助

Air temperature from May through August in northern Xinjiang reconstructed from multi-site tree-ring density

CHEN Feng, YUAN Yujiang, WEI Wenshou, YU Shulong, SHANG Huaming, ZHANG Tongwen, ZHANG Ruibo, WANG Huiqin   

  1. Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration/Xinjiang Laboratory of Tree Ring Ecology, Institute of Desert Meteorology, China Meteorological Administration, Vrümqi 830002, China
  • Received:2016-07-16 Revised:2016-11-15 Online:2017-02-25 Published:2017-06-03

摘要: 利用新疆北部5个采样点的树轮密度年表主序列和新疆北部33个气象站观测气温平均值进行相关分析,结果显示其与新疆北部5-8月平均温度存在很强一致相关性,相关系数为0.667(p<0.001, n=49)。温度重建方程能够解释校准期(1960-2008年)内44.5%的温度变化方差。空间相关分析揭示该温度重建序列能够表征新疆北部过去353 a (1656-2008年)5-8月温度总体变化特征。重建序列揭示新疆北部5-8月平均温度大致经历了6个偏暖阶段,即1656-1664年、1667-1692年、1711-1734年、1804-1832年、1855-1956年、2000-2008年,中间为偏冷阶段,这些阶段中间多个小幅度变化。温度重建结果发现新疆北部温度变化与太阳活动、火山喷发有着紧密联系。温度重建序列与全球海温场的相关分析显示当西风带海区及热带大西洋地区的海温偏高时,研究区气温偏高。与海温、火山喷发和云量变化的相关分析都指示在西风环流的作用下,上述因子对于该地区温度变化有着重要影响。该温度重建序列在低频变化上与北半球气温具有显著正相关,说明中亚地区温度变化与北半球整体温度变化具有较好的一致性。

关键词: 新疆北部, 树轮密度, 温度重建, 火山喷发

Abstract: Tree-ring density from five sites in northern Xinjiang and the Tianshan Mountains was analyzed by using principal component analysis and arithmetic average method. It is found that the first principal component of density chronology accounted for 40.86% of the total variances of the five site density chronologies, and highly correlated with the arithmetic average of the five site density chronologies. The arithmetic average of the five site density chronologies was highly positively correlated with the May-August mean temperature averaged over the thirty-three meteorological stations in northern Xinjiang and the Tianshan Mountains. The climate/tree-growth model accounted for 44.5% of the temperature variance from 1960 to 2008. There were six warm phases during 1656-1664, 1667-1692, 1711-1734, 1804-1832, 1855-1956 and 2000-2008. There were several severe cold phases coinciding with major volcanic eruptions. Some temperature variations also correspond to the variations in solar activity. Low-frequency change of the reconstructed temperature had correlated positively with Northern Hemisphere temperatures. The reconstructed temperature was significantly correlated with sea-surface temperature (SST) in the tropical Atlantic Ocean (positive), the North Pacific Ocean (positive) and the North Atlantic Ocean (positive). The spatial correlation patterns between the reconstructed temperature and SSTs of the Atlantic and Pacific Oceans, cloud cover, and volcanic eruptions suggested that there was a connection between regional temperature variation and the high-mid latitude northern atmospheric circulation (westerlies).

Key words: northern Xinjiang, tree-ring density, temperature reconstruction, volcanic eruption

中图分类号: 

  • P467