Spatial and temporal characteristics of precipitation over the Three-River Headwaters region during 1961–2014
Study region: Three-River Headwaters (TRH) region, China. Study focus: Precipitation is regarded as the basic component of the global hydrological cycle. This study investigated the spatial and temporal characteristics of precipitation over the TRH region during 1961–2014, based on the observed data...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2016-06-01
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| Series: | Journal of Hydrology: Regional Studies |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581816300106 |
| _version_ | 1818318363715174400 |
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| author | Haiyun Shi Tiejian Li Jiahua Wei Wang Fu Guangqian Wang |
| author_facet | Haiyun Shi Tiejian Li Jiahua Wei Wang Fu Guangqian Wang |
| author_sort | Haiyun Shi |
| collection | DOAJ |
| description | Study region: Three-River Headwaters (TRH) region, China.
Study focus: Precipitation is regarded as the basic component of the global hydrological cycle. This study investigated the spatial and temporal characteristics of precipitation over the TRH region during 1961–2014, based on the observed data of 29 meteorological stations.
New hydrological insights for the region: The results showed that: (1) temporally, the TRH region has experienced a significant increasing trend in the annual precipitation (p < 0.1) during 1961–2014, especially in the dry season (p < 0.01). (2) Spatially, the mean annual precipitation (MAP) in the TRH region showed the southeast-to-northwest decreasing trend and the annual precipitation recorded at most stations (i.e., 26 in 29) presented the increasing trends. (3) A close correlation of the MAP with elevation was found, that is, a low-to-high increasing trend below 3800 m but an inverse correlation above 3800 m; in addition, statistical equations to estimate precipitation with high R2 values were established based on longitude, latitude and elevation. (4) Characteristics of related meteorological variables and possible impact of precipitation on runoff were analyzed and discussed. These results would be valuable for the researchers to better understand the changing characteristics of precipitation and for the managers to make better decisions in the future. |
| first_indexed | 2024-12-13T09:52:02Z |
| format | Article |
| id | doaj.art-8cd9756f5da64e2d8a55cacdd16fe11b |
| institution | Directory Open Access Journal |
| issn | 2214-5818 |
| language | English |
| last_indexed | 2024-12-13T09:52:02Z |
| publishDate | 2016-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj.art-8cd9756f5da64e2d8a55cacdd16fe11b2022-12-21T23:51:54ZengElsevierJournal of Hydrology: Regional Studies2214-58182016-06-016C526510.1016/j.ejrh.2016.03.001Spatial and temporal characteristics of precipitation over the Three-River Headwaters region during 1961–2014Haiyun Shi0Tiejian Li1Jiahua Wei2Wang Fu3Guangqian Wang4State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, ChinaState Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, ChinaState Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, ChinaState Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, ChinaState Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, ChinaStudy region: Three-River Headwaters (TRH) region, China. Study focus: Precipitation is regarded as the basic component of the global hydrological cycle. This study investigated the spatial and temporal characteristics of precipitation over the TRH region during 1961–2014, based on the observed data of 29 meteorological stations. New hydrological insights for the region: The results showed that: (1) temporally, the TRH region has experienced a significant increasing trend in the annual precipitation (p < 0.1) during 1961–2014, especially in the dry season (p < 0.01). (2) Spatially, the mean annual precipitation (MAP) in the TRH region showed the southeast-to-northwest decreasing trend and the annual precipitation recorded at most stations (i.e., 26 in 29) presented the increasing trends. (3) A close correlation of the MAP with elevation was found, that is, a low-to-high increasing trend below 3800 m but an inverse correlation above 3800 m; in addition, statistical equations to estimate precipitation with high R2 values were established based on longitude, latitude and elevation. (4) Characteristics of related meteorological variables and possible impact of precipitation on runoff were analyzed and discussed. These results would be valuable for the researchers to better understand the changing characteristics of precipitation and for the managers to make better decisions in the future.http://www.sciencedirect.com/science/article/pii/S2214581816300106PrecipitationTemporal trendSpatial distributionElevationRunoffThree-River Headwaters region |
| spellingShingle | Haiyun Shi Tiejian Li Jiahua Wei Wang Fu Guangqian Wang Spatial and temporal characteristics of precipitation over the Three-River Headwaters region during 1961–2014 Journal of Hydrology: Regional Studies Precipitation Temporal trend Spatial distribution Elevation Runoff Three-River Headwaters region |
| title | Spatial and temporal characteristics of precipitation over the Three-River Headwaters region during 1961–2014 |
| title_full | Spatial and temporal characteristics of precipitation over the Three-River Headwaters region during 1961–2014 |
| title_fullStr | Spatial and temporal characteristics of precipitation over the Three-River Headwaters region during 1961–2014 |
| title_full_unstemmed | Spatial and temporal characteristics of precipitation over the Three-River Headwaters region during 1961–2014 |
| title_short | Spatial and temporal characteristics of precipitation over the Three-River Headwaters region during 1961–2014 |
| title_sort | spatial and temporal characteristics of precipitation over the three river headwaters region during 1961 2014 |
| topic | Precipitation Temporal trend Spatial distribution Elevation Runoff Three-River Headwaters region |
| url | http://www.sciencedirect.com/science/article/pii/S2214581816300106 |
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