Spatiotemporal Analysis of Drought Characteristics in Song-Liao River Basin in China
The monthly accumulated precipitation and monthly average temperature of 117 meteorological stations in Song-Liao River Basin (SLRB) were used to calculate the Standardized Precipitation Evapotranspiration Indices (SPEI) to analyze the drought characteristics, including long-term trends, drought aff...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2017/3484363 |
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| _version_ | 1832561051904770048 |
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| author | Xiaojing Shen Xu Wu Xinmin Xie Zhenzhen Ma Meijian Yang |
| author_facet | Xiaojing Shen Xu Wu Xinmin Xie Zhenzhen Ma Meijian Yang |
| author_sort | Xiaojing Shen |
| collection | DOAJ |
| description | The monthly accumulated precipitation and monthly average temperature of 117 meteorological stations in Song-Liao River Basin (SLRB) were used to calculate the Standardized Precipitation Evapotranspiration Indices (SPEI) to analyze the drought characteristics, including long-term trends, drought affected area, climate abrupt change, intensive drought occurrence regions, and drought durations during 1964–2013 with the support of GIS. The Area Drought Severity (ADS), a comprehensive index, is proposed to assess both the variations of drought degree and the extent of the drought affected area. The results revealed that (1) the drought happening probability and degree are rising and the affected areas of all degrees of drought have an increasing trend during the last 50 years; (2) there is a climate abrupt change which occurred in around 1994, and the area with declining SPEI is larger than that with declining SPI, which could be due to the rising temperature after the climate abrupt change; (3) all degrees of drought occurrence probability increased, and the intensive drought occurrence regions altered from the northern SLRB to the southwestern SLRB after the climate abrupt change; (4) the drought duration increased from 1994, and the increased drought durations occurred in most parts of SLRB. |
| format | Article |
| id | doaj-art-f08b997241ae44da9622436ede621e5b |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-f08b997241ae44da9622436ede621e5b2025-02-03T01:26:12ZengWileyAdvances in Meteorology1687-93091687-93172017-01-01201710.1155/2017/34843633484363Spatiotemporal Analysis of Drought Characteristics in Song-Liao River Basin in ChinaXiaojing Shen0Xu Wu1Xinmin Xie2Zhenzhen Ma3Meijian Yang4State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research (IWHR), Beijing 100038, ChinaZhejiang Guangchuan Engineering Consulting Co., Ltd, Hangzhou 310000, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research (IWHR), Beijing 100038, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research (IWHR), Beijing 100038, ChinaDepartment of Civil and Environmental Engineering, University of Connecticut, Storrs, CT 06269, USAThe monthly accumulated precipitation and monthly average temperature of 117 meteorological stations in Song-Liao River Basin (SLRB) were used to calculate the Standardized Precipitation Evapotranspiration Indices (SPEI) to analyze the drought characteristics, including long-term trends, drought affected area, climate abrupt change, intensive drought occurrence regions, and drought durations during 1964–2013 with the support of GIS. The Area Drought Severity (ADS), a comprehensive index, is proposed to assess both the variations of drought degree and the extent of the drought affected area. The results revealed that (1) the drought happening probability and degree are rising and the affected areas of all degrees of drought have an increasing trend during the last 50 years; (2) there is a climate abrupt change which occurred in around 1994, and the area with declining SPEI is larger than that with declining SPI, which could be due to the rising temperature after the climate abrupt change; (3) all degrees of drought occurrence probability increased, and the intensive drought occurrence regions altered from the northern SLRB to the southwestern SLRB after the climate abrupt change; (4) the drought duration increased from 1994, and the increased drought durations occurred in most parts of SLRB.http://dx.doi.org/10.1155/2017/3484363 |
| spellingShingle | Xiaojing Shen Xu Wu Xinmin Xie Zhenzhen Ma Meijian Yang Spatiotemporal Analysis of Drought Characteristics in Song-Liao River Basin in China Advances in Meteorology |
| title | Spatiotemporal Analysis of Drought Characteristics in Song-Liao River Basin in China |
| title_full | Spatiotemporal Analysis of Drought Characteristics in Song-Liao River Basin in China |
| title_fullStr | Spatiotemporal Analysis of Drought Characteristics in Song-Liao River Basin in China |
| title_full_unstemmed | Spatiotemporal Analysis of Drought Characteristics in Song-Liao River Basin in China |
| title_short | Spatiotemporal Analysis of Drought Characteristics in Song-Liao River Basin in China |
| title_sort | spatiotemporal analysis of drought characteristics in song liao river basin in china |
| url | http://dx.doi.org/10.1155/2017/3484363 |
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