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| 1 | 关于青藏高原2485年温度的季节和空间代表性问题显示文摘利用树轮宽度重建的青藏高原东北部2485年年均温度曲线一经发表就引起了学界很大关注。本文就该温度曲线的空间代表性问题进行了再次分析,该研究的样本来自青海乌兰和都兰地区,有一定的空间覆盖度。尽管宽度年表用于年均温度重建,但是我们也指出,它与冬半年(上年9月~当年3月)平均温度也显著高相关(r=0.686,p<0.0001)。重建温度曲线不仅与青藏高原东北部地区,而且与我国中北部地区的气象台站同期平均温度记录显著相关。本文进一步通过重建曲线与不同时空尺度CRU TS3.1网格点资料的相关分析,证明2485年年均温度曲线具有一定的全球空间代表性。 | 刘禹 蔡秋芳 宋慧明 | 2013 | 第四纪研究2013，33，1： | 25 |
| 2 | A brief of recent research progress on ionospheric disturbances显示文摘Ionospheric disturbances are the main causes of space weather events,which seriously influence accurate navigation,telecommunication,and so on.It is a fundamental issue to detect and analyze the disturbance processes of the ionosphere.Theoretically,the understanding of the mechanisms of most ionospheric disturbances depends on observational results.With the development of space observation techniques and related equipments,various eforts have been made to analyze the long-term statistical variations as well as sudden disturbances of ionospheric observation results.We briefly report some research progresses of ionospheric disturbances achieved in recent years,with regard to ground-based and satellites observations.The purpose is to provide a reference about the latest research progresses and improve the development of the future ionospheric disturbances observations and related researches. | XIAO Zuo YU ShiMei SHI Hao HAO Yong | 2013 | Science China(Information Sciences)2013，56，12： | 5 |
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