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作 者:姜盛夏 张同文[1] 喻树龙[1] 尚华明[1] 张瑞波[1] 秦莉[1] 袁玉江[1] JIANG Shengxia;ZHANG Tongwen;YU Shulong;SHANG Huaming;ZHANG Ruibo;QIN Li;YUAN Yujiang(Institute of Desert Meteorology,China Meteorological Administration,Key Laboratory of Tree-ring Ecology of Xinjiang Uigur Autonomous Region,Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration,Urumqi 830002,China)
机构地区:[1]中国气象局乌鲁木齐沙漠气象研究所,新疆维吾尔自治区树木年轮生态重点实验室,中国气象局树木年轮理化研究重点实验室,新疆乌鲁木齐830002
出 处:《沙漠与绿洲气象》2022年第3期102-111,共10页Desert and Oasis Meteorology
基 金:中央级公益性科研院所基本科研业务费项目(IDM2018004);国家自然科学基金(41975095);天山青年人才项目(2018Q085);天山青年计划“杰出青年科技人才”(2019Q007)。
摘 要:利用基于树轮资料建立的25条历史气候序列,集成重建天山和阿尔泰山近150 a的年降水量和夏季气温变化情况。结果表明:20世纪上半叶是天山区域极端气候年份频现时期,而阿尔泰山极端气候年份在20世纪上下半叶分布数量相当,在19世纪下半叶相对较少。两个山系极端低值气候年份的一致性更好,且与部分历史记录吻合。天山在过去150 a大致经历了5个偏干时期和5个偏湿时期,以及3个偏冷时期和3个偏暖时期;阿尔泰山则经历了5个偏干时期和6个偏湿时期,以及4个偏冷时期和4个偏暖时期。此外,除均存在2~6 a变化周期外,天山年降水量重建序列存在27~30 a和38~39 a的变化周期,夏季平均气温重建序列存在10.5、53.5和63.7 a的变化周期;阿尔泰山夏季平均气温存在12.6 a的变化周期。分析表明,ENSO对天山和阿尔泰山年降水量有显著影响,而太阳黑子数与阿尔泰山夏季气温呈滞后负相关。The 150-years annual precipitation and summer temperature series were reconstructed by twenty five historical climate series based on tree-ring data.The results revealed that the extreme climate years for the Tianshan Mountains frequently appeared in the first half of the 20th century.The extreme climate years for the Altay Mountains in the first half of the 20th century were fairly near the last half of the 20th century,but the extreme climate years in the last half of the 19th century were relatively rare.The extreme dry and cold years for two huge mountain system had a good coherence and coincide some historical records well.There were five dry and five wet periods,and three cold and three warm periods in the Tianshan Mountains,while five dry and six wet periods,and four cold and four warm periods occurs in the Altay Mountains in the past 150 years.In addition,except for the 2-6 year cycles existing in the four climate reconstructions,the precipitation series for the Tianshan Mountains have the 27-30 years and 38-39 years cycles,while there are cycles of 10.5,53.5,63.7 years in the mean summer temperature series.The summer temperature reconstruction for the Altay Mountains have a cycle of 12.6 years.The activity of ENSO significantly affects the precipitation of the Tianshan Mountains and the Altay Mountains.There is a lag negative correlation between the sunspots number and summer temperature for the Altay Mountains.
分 类 号:P467[天文地球—大气科学及气象学]
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