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夏半年青藏高原及附近地区30—60天振荡的分布特征
引用本文:孙照渤,李云康,章基嘉. 夏半年青藏高原及附近地区30—60天振荡的分布特征[J]. 南京气象学院学报, 1991, 0(4)
作者姓名:孙照渤  李云康  章基嘉
作者单位:南京气象学院(孙照渤),四川省气象局(李云康),国家气象局(章基嘉)
摘    要:本文用1980—1982年3个夏半年(5—9月)的ECMWF客观分析资料,对青藏高原及其附近500hPa位势高度场进行了最大熵谱分析和滤波分析。结果表明:青藏高原及其附近地区夏半年存在着30-60天振荡,高原东部为一相对的30-60天振荡中心。本文还讨论了振荡的年际变化特征。

关 键 词:青藏高原  气象要素  位势场  振荡

DETECTION OF THE 30-60 DAY OSCILLATION OVER THE QINGHAI-XIZANG PLATEAU AND ITS SURROUNDING AREAS DURING SUMMER TIME
Sun Zhaobo,Li Yunkang,Zhang Jijia Nanjing Institute of Meteorology Sichuan Provincial Meteorological Bureau State Meteorological Administration. DETECTION OF THE 30-60 DAY OSCILLATION OVER THE QINGHAI-XIZANG PLATEAU AND ITS SURROUNDING AREAS DURING SUMMER TIME[J]. Journal of Nanjing Institute of Meteorology, 1991, 0(4)
Authors:Sun Zhaobo  Li Yunkang  Zhang Jijia Nanjing Institute of Meteorology Sichuan Provincial Meteorological Bureau State Meteorological Administration
Affiliation:Sun Zhaobo;Li Yunkang;Zhang Jijia Nanjing Institute of Meteorology Sichuan Provincial Meteorological Bureau State Meteorological Administration
Abstract:Results of the Maximum Entropy Spectrum analysis and thefiltering analysis are given by using the ECMWF analysis data of the500 hPa geopotential height over the Qinghai-Xizang Plateau and itssurrounding areas during the summer half year.It is shown that the30-60 day oscillations are significant over the Plateau and its vicinity.The center of the 30-60 oscillations is found in the eastern part of thePlateau. The annual variations are also discussed.
Keywords:the Qinghai-Xizang Plateau  meteorological element  geopotential field  oscillation
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