| 中国IGS站点ZTD长时序特征及其与年降水量的关系研究 |
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| 引用本文： | 王勇,娄泽生,刘严萍,郝振航.中国IGS站点ZTD长时序特征及其与年降水量的关系研究[J].大地测量与地球动力学,2019,39(10):1037-1040. |
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| 作者姓名： | 王勇 娄泽生 刘严萍 郝振航 |
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| 作者单位： | 天津城建大学地质与测绘学院,天津市津静路26号,300384;天津城建大学经济与管理学院,天津市津静路26号,300384 |
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| 基金项目： | 天津市自然科学基金;河北省自然科学基金 |
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| 摘 要： | 利用小波变换方法对中国IGS站点ZTD时间序列进行分解与重构，分析ZTD序列的低频趋势项、高频年变化周期项与年降水量的对应关系，并结合气候资料分析原因。研究发现，ZTD低频趋势项与年降水量的变化趋势相同，ZTD高频周期项与年降水量变化存在较好的对应关系，ZTD年周期项峰值的高低对应年降水量的多少。
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| 关 键 词： | 对流层延迟 水汽 小波 降水 |
ZTD Long Time Series Characteristics of IGS Stations in China and Their Relationship with Annual Precipitation |
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| WANG Yong,LOU Zesheng,LIU Yanping,HAO Zhenhang.ZTD Long Time Series Characteristics of IGS Stations in China and Their Relationship with Annual Precipitation[J].Journal of Geodesy and Geodynamics,2019,39(10):1037-1040. |
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| Authors: | WANG Yong LOU Zesheng LIU Yanping HAO Zhenhang |
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| Abstract: | First, we use wavelet to transform decomposition and reconstruction of ZTD time series of IGS stations in China, and then compare low-frequency trend and high-frequency cycle terms of ZTD with annual precipitation, analyzing their relationship with annual precipitation, and analyzing the causal relation with climate data. The results show that the low-frequency trend is the same as the trend of annual precipitation, there is a good correspondence between the high-frequency cycle terms and the annual precipitation variation, and the peak of high-frequency annual cycle terms corresponds to the peak of annual precipitation. |
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| Keywords: | ZTD precipitable water vapor wavelet precipitation |
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