{"title":"Application of remote sensing technology in the analysis of periodic precipitation change in China’s Northern semi-arid area","authors":"Yannan Zhang, C. Liang","doi":"10.15446/ESRJ.V25N1.93925","DOIUrl":null,"url":null,"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","PeriodicalId":11456,"journal":{"name":"Earth Sciences Research Journal","volume":null,"pages":null},"PeriodicalIF":0.7000,"publicationDate":"2021-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Earth Sciences Research Journal","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.15446/ESRJ.V25N1.93925","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"GEOSCIENCES, MULTIDISCIPLINARY","Score":null,"Total":0}
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
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.