Spatiotemporal characteristics of precipitation in Harbin City, China, from 1962 to 2020
Based on daily precipitation data from 11 stations in Harbin City from 1962 to 2020, various statistical methods, including linear regression, moving averages, anomaly analysis, Mann-Kendall (M-K) mutation test, and Morlet wavelet analysis, were applied to examine annual and seasonal precipitation t...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2025-04-01
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| Series: | Frontiers in Environmental Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenvs.2025.1550421/full |
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| author | Yuanyuan Fu Yuanyuan Fu Jichao Sun Jichao Sun |
| author_facet | Yuanyuan Fu Yuanyuan Fu Jichao Sun Jichao Sun |
| author_sort | Yuanyuan Fu |
| collection | DOAJ |
| description | Based on daily precipitation data from 11 stations in Harbin City from 1962 to 2020, various statistical methods, including linear regression, moving averages, anomaly analysis, Mann-Kendall (M-K) mutation test, and Morlet wavelet analysis, were applied to examine annual and seasonal precipitation trends, mutations, and periodicities. The results reveal an increasing trend in annual precipitation, with significant increase during all seasons, particularly in summer, which contributes the most to total annual precipitation. Monthly precipitation shows significant variation, with July being the wettest and January the driest. Multiple abrupt changes were identified in both annual and seasonal precipitation, with the most significant mutations occurring in 1963, 1979, and 2018. Periodic analysis indicates that the main periodicity in annual precipitation occurs at 32–52 years, with seasonal variations peaking at different scales. Spring and winter show the highest periodic intensity at 45–64 years, while summer and autumn are most strongly influenced by cycles at 32–52 years. Precipitation periodicity shortens from north to south and east to west. Precipitation also shows a strong positive correlation with vegetation indices. These findings provide valuable insights for water resource management and agricultural planning in the region, offering a scientific basis for developing strategies to address seasonal and long-term precipitation fluctuations. |
| format | Article |
| id | doaj-art-3fc0cb87e387428c851ee3feb3ce8bc9 |
| institution | OA Journals |
| issn | 2296-665X |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Environmental Science |
| spelling | doaj-art-3fc0cb87e387428c851ee3feb3ce8bc92025-08-20T02:18:43ZengFrontiers Media S.A.Frontiers in Environmental Science2296-665X2025-04-011310.3389/fenvs.2025.15504211550421Spatiotemporal characteristics of precipitation in Harbin City, China, from 1962 to 2020Yuanyuan Fu0Yuanyuan Fu1Jichao Sun2Jichao Sun3Key Laboratory of Groundwater Conservation of MWR, China University of Geosciences, Beijing, ChinaSchool of Water Resource and Environment, China University of Geosciences, Beijing, ChinaKey Laboratory of Groundwater Conservation of MWR, China University of Geosciences, Beijing, ChinaSchool of Water Resource and Environment, China University of Geosciences, Beijing, ChinaBased on daily precipitation data from 11 stations in Harbin City from 1962 to 2020, various statistical methods, including linear regression, moving averages, anomaly analysis, Mann-Kendall (M-K) mutation test, and Morlet wavelet analysis, were applied to examine annual and seasonal precipitation trends, mutations, and periodicities. The results reveal an increasing trend in annual precipitation, with significant increase during all seasons, particularly in summer, which contributes the most to total annual precipitation. Monthly precipitation shows significant variation, with July being the wettest and January the driest. Multiple abrupt changes were identified in both annual and seasonal precipitation, with the most significant mutations occurring in 1963, 1979, and 2018. Periodic analysis indicates that the main periodicity in annual precipitation occurs at 32–52 years, with seasonal variations peaking at different scales. Spring and winter show the highest periodic intensity at 45–64 years, while summer and autumn are most strongly influenced by cycles at 32–52 years. Precipitation periodicity shortens from north to south and east to west. Precipitation also shows a strong positive correlation with vegetation indices. These findings provide valuable insights for water resource management and agricultural planning in the region, offering a scientific basis for developing strategies to address seasonal and long-term precipitation fluctuations.https://www.frontiersin.org/articles/10.3389/fenvs.2025.1550421/fullprecipitation analysisMorlet wavelet analysisM-K mutation testclimate variabilitylong-term trends |
| spellingShingle | Yuanyuan Fu Yuanyuan Fu Jichao Sun Jichao Sun Spatiotemporal characteristics of precipitation in Harbin City, China, from 1962 to 2020 Frontiers in Environmental Science precipitation analysis Morlet wavelet analysis M-K mutation test climate variability long-term trends |
| title | Spatiotemporal characteristics of precipitation in Harbin City, China, from 1962 to 2020 |
| title_full | Spatiotemporal characteristics of precipitation in Harbin City, China, from 1962 to 2020 |
| title_fullStr | Spatiotemporal characteristics of precipitation in Harbin City, China, from 1962 to 2020 |
| title_full_unstemmed | Spatiotemporal characteristics of precipitation in Harbin City, China, from 1962 to 2020 |
| title_short | Spatiotemporal characteristics of precipitation in Harbin City, China, from 1962 to 2020 |
| title_sort | spatiotemporal characteristics of precipitation in harbin city china from 1962 to 2020 |
| topic | precipitation analysis Morlet wavelet analysis M-K mutation test climate variability long-term trends |
| url | https://www.frontiersin.org/articles/10.3389/fenvs.2025.1550421/full |
| work_keys_str_mv | AT yuanyuanfu spatiotemporalcharacteristicsofprecipitationinharbincitychinafrom1962to2020 AT yuanyuanfu spatiotemporalcharacteristicsofprecipitationinharbincitychinafrom1962to2020 AT jichaosun spatiotemporalcharacteristicsofprecipitationinharbincitychinafrom1962to2020 AT jichaosun spatiotemporalcharacteristicsofprecipitationinharbincitychinafrom1962to2020 |