Open AccessVariation Characteristics and Complexity Measurement of Urban Precipitation Based on Multi-scale Permutation Entropy
Author(s) -
Dong Liu,
Tingqi Yan,
Sicheng Liu,
Guiqin Yan
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1624/3/032027
Subject(s) - precipitation , research object , entropy (arrow of time) , scale (ratio) , environmental science , computer science , meteorology , geography , physics , cartography , quantum mechanics , regional science
In order to better judge the complexity of precipitation, this paper took some major cities of Heilongjiang Province as the research object, and used the Mann-Kendall test and multi-scale permutation entropy theory to study the complexity of precipitation. The results show that there are many sudden change points of precipitation in cities in Heilongjiang Province, which have a strong complexity, which can provide a basis for the study of precipitation complexity. Among urban precipitation, the complexity of precipitation in Hegang City is the strongest, and the complexity of precipitation in Daxinganling is the weakest. Among them, water resources and living area have a significant impact on the precipitation complexity. This study can provide a new method for studying hydrological changes and complexity intensity in the future.