Application of remote sensing technology in the analysis of periodic precipitation change in China’s Northern semi-arid area

IF 0.7 4区 地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY
Yannan Zhang, C. Liang
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引用次数: 0

Abstract

How to cite item Zhang, Y. & Liang, C. (2021). Application of remote sensing technology in the analysis of periodic precipitation change in China’s Northern semi-arid area. Earth Sciences Research Journal, 25(1), 85-91. DOI: https:// doi.org/10.15446/esrj.v25n1.93925 The remote sensing technology is used to analyze the periodic changes of precipitation in the semi-arid areas of northern China and provide a reference basis for precipitation prediction. Authors were based on GPS observation data and corresponding ground meteorological parameters to obtain the study area’s comprehensive water vapor content value and use precipitation and time to establish a linear regression equation based on the content value to express the precipitation trend change. The periodic structure and abnormal changes of the periodic precipitation series on different time scales were obtained through wavelet analysis, combined with anomaly calculations to analyze the increase and decrease precipitation characteristics. The Morlet continuous wavelet transform map was also used to reflect the periodic oscillations of precipitation on different time scales. The wavelet variance map was used to reflect the distribution of regional precipitation with scale years. The authors analyzed the cycle change characteristics of the comprehensive precipitation series in Harbin, Changchun, Shenyang, and Dalian. They concluded that the annual precipitation in the four regions showed a decreasing trend in 50 years. And through the wavelet cycle frequencydomain relationship change law, the change characteristics of precipitation in the northern semi-arid area in the entire time domain were obtained. ABSTRACT Application of remote sensing technology in the analysis of periodic precipitation change in China’s Northern semi-arid area
遥感技术在我国北方半干旱地区降水周期变化分析中的应用
如何引用项目张,Y.&Liang,C.(2021)。遥感技术在我国北方半干旱地区降水周期变化分析中的应用。《地球科学研究杂志》,25(1),85-91。DOI:https://DOI.org/10.15446/esrj.v25n1.93925利用遥感技术分析了中国北方半干旱地区降水的周期性变化,为降水预报提供了参考依据。作者根据GPS观测数据和相应的地面气象参数,获得研究区的综合水汽含量值,并利用降水量和时间建立基于含量值的线性回归方程,表达降水量的趋势变化。通过小波分析获得了不同时间尺度上周期性降水序列的周期结构和异常变化,并结合异常计算分析了降水的增减特征。Morlet连续小波变换图也用于反映不同时间尺度上降水的周期振荡。利用小波方差图反映了区域降水量随尺度年的分布。分析了哈尔滨、长春、沈阳、大连等地综合降水序列的周期变化特征。他们得出的结论是,这四个地区的年降水量在50年内呈下降趋势。并通过小波循环频域关系变化规律,得到了北方半干旱地区降水在整个时间域上的变化特征。遥感技术在中国北方半干旱地区降水周期变化分析中的应用
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来源期刊
Earth Sciences Research Journal
Earth Sciences Research Journal 地学-地球科学综合
CiteScore
1.50
自引率
0.00%
发文量
0
审稿时长
>12 weeks
期刊介绍: ESRJ publishes the results from technical and scientific research on various disciplines of Earth Sciences and its interactions with several engineering applications. Works will only be considered if not previously published anywhere else. Manuscripts must contain information derived from scientific research projects or technical developments. The ideas expressed by publishing in ESRJ are the sole responsibility of the authors. We gladly consider manuscripts in the following subject areas: -Geophysics: Seismology, Seismic Prospecting, Gravimetric, Magnetic and Electrical methods. -Geology: Volcanology, Tectonics, Neotectonics, Geomorphology, Geochemistry, Geothermal Energy, ---Glaciology, Ore Geology, Environmental Geology, Geological Hazards. -Geodesy: Geodynamics, GPS measurements applied to geological and geophysical problems. -Basic Sciences and Computer Science applied to Geology and Geophysics. -Meteorology and Atmospheric Sciences. -Oceanography. -Planetary Sciences. -Engineering: Earthquake Engineering and Seismology Engineering, Geological Engineering, Geotechnics.
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