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Trend and Abrupt Analysis of Rainfall Change During Last 50 Years in the WeiHe Basin

Received: 4 December 2015     Published: 5 December 2015
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Abstract

In order to explore the change of 50 years’ rainfall trend and abrupt change in WeiHe Basin, we using the annual rainfall data of 21 important control stations in WeiHe basin from 1960 to 2012 to analyze the changes in the time rainfall and the change trend of the annual rainfall anomaly, and using Kendall - Mann method to test the trend of rainfall in WeiHe Basin. It shows that rainfall rate keeps decreasing during the last 50 years, and the change rate of upstream is generally greater than the midstream and downstream. For mutation years, it occurs in 1970s in downstream, in1970s and 1980s in midstream and in 1990s and after 2000 in upstream. It shows that the change of rainfall in different regions have different performance. From the tendency analysis, we can predict that the whole WeiHe basin will keep a decreasing trend of annual rainfall in the future.

Published in Earth Sciences (Volume 4, Issue 6)
DOI 10.11648/j.earth.20150406.12
Page(s) 228-234
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2015. Published by Science Publishing Group

Keywords

WeiHe Basin, Tendency Analysis of Precipitation, Mann—Kendall, Abrupt Analysis

References
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  • APA Style

    Li Zhi, Sun Dongyong. (2015). Trend and Abrupt Analysis of Rainfall Change During Last 50 Years in the WeiHe Basin. Earth Sciences, 4(6), 228-234. https://doi.org/10.11648/j.earth.20150406.12

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    ACS Style

    Li Zhi; Sun Dongyong. Trend and Abrupt Analysis of Rainfall Change During Last 50 Years in the WeiHe Basin. Earth Sci. 2015, 4(6), 228-234. doi: 10.11648/j.earth.20150406.12

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    AMA Style

    Li Zhi, Sun Dongyong. Trend and Abrupt Analysis of Rainfall Change During Last 50 Years in the WeiHe Basin. Earth Sci. 2015;4(6):228-234. doi: 10.11648/j.earth.20150406.12

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  • @article{10.11648/j.earth.20150406.12,
      author = {Li Zhi and Sun Dongyong},
      title = {Trend and Abrupt Analysis of Rainfall Change During Last 50 Years in the WeiHe Basin},
      journal = {Earth Sciences},
      volume = {4},
      number = {6},
      pages = {228-234},
      doi = {10.11648/j.earth.20150406.12},
      url = {https://doi.org/10.11648/j.earth.20150406.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20150406.12},
      abstract = {In order to explore the change of 50 years’ rainfall trend and abrupt change in WeiHe Basin, we using the annual rainfall data of 21 important control stations in WeiHe basin from 1960 to 2012 to analyze the changes in the time rainfall and the change trend of the annual rainfall anomaly, and using Kendall - Mann method to test the trend of rainfall in WeiHe Basin. It shows that rainfall rate keeps decreasing during the last 50 years, and the change rate of upstream is generally greater than the midstream and downstream. For mutation years, it occurs in 1970s in downstream, in1970s and 1980s in midstream and in 1990s and after 2000 in upstream. It shows that the change of rainfall in different regions have different performance. From the tendency analysis, we can predict that the whole WeiHe basin will keep a decreasing trend of annual rainfall in the future.},
     year = {2015}
    }
    

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  • TY  - JOUR
    T1  - Trend and Abrupt Analysis of Rainfall Change During Last 50 Years in the WeiHe Basin
    AU  - Li Zhi
    AU  - Sun Dongyong
    Y1  - 2015/12/05
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    N1  - https://doi.org/10.11648/j.earth.20150406.12
    DO  - 10.11648/j.earth.20150406.12
    T2  - Earth Sciences
    JF  - Earth Sciences
    JO  - Earth Sciences
    SP  - 228
    EP  - 234
    PB  - Science Publishing Group
    SN  - 2328-5982
    UR  - https://doi.org/10.11648/j.earth.20150406.12
    AB  - In order to explore the change of 50 years’ rainfall trend and abrupt change in WeiHe Basin, we using the annual rainfall data of 21 important control stations in WeiHe basin from 1960 to 2012 to analyze the changes in the time rainfall and the change trend of the annual rainfall anomaly, and using Kendall - Mann method to test the trend of rainfall in WeiHe Basin. It shows that rainfall rate keeps decreasing during the last 50 years, and the change rate of upstream is generally greater than the midstream and downstream. For mutation years, it occurs in 1970s in downstream, in1970s and 1980s in midstream and in 1990s and after 2000 in upstream. It shows that the change of rainfall in different regions have different performance. From the tendency analysis, we can predict that the whole WeiHe basin will keep a decreasing trend of annual rainfall in the future.
    VL  - 4
    IS  - 6
    ER  - 

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Author Information
  • School of Environmental Science and Engineering, Chang’an University, Xi’an, China

  • School of Environmental Science and Engineering, Chang’an University, Xi’an, China

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