Standardized Water Budget Index and Validation in Drought Estimation of Haihe River Basin, North China
The physical-based drought indices such as the self-calibrated Palmer Drought Severity Index (sc-PDSI) with the fixed time scale is inadequate for the multiscalar drought assessment, and the multiscalar drought indices including Standardized Precipitation Index (SPI), Reconnaissance Drought Index (R...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2016/9159532 |
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| author | Shaohua Liu Denghua Yan Hao Wang Chuanzhe Li Baisha Weng Tianling Qin |
| author_facet | Shaohua Liu Denghua Yan Hao Wang Chuanzhe Li Baisha Weng Tianling Qin |
| author_sort | Shaohua Liu |
| collection | DOAJ |
| description | The physical-based drought indices such as the self-calibrated Palmer Drought Severity Index (sc-PDSI) with the fixed time scale is inadequate for the multiscalar drought assessment, and the multiscalar drought indices including Standardized Precipitation Index (SPI), Reconnaissance Drought Index (RDI), and Standardized Precipitation Evapotranspiration Index (SPEI) based on the meteorological factors are lack of physical mechanism and cannot depict the actual water budget. To fill this gap, the Standardized Water Budget Index (SWBI) is constructed based on the difference between areal precipitation and actual evapotranspiration (AET), which can describe the actual water budget but also assess the drought at multiple time scales. Then, sc-PDSI was taken as the reference drought index to compare with multiscalar drought indices at different time scale in Haihe River basin. The result shows that SWBI correlates better with sc-PDSI and the RMSE of SWBI is less than other multiscalar drought indices. In addition, all of drought indices show a decreasing trend in Haihe River Basin, possibly due to the decreasing precipitation from 1961 to 2010. The decreasing trends of SWBI were significant and consistent at all the time scales, while the decreasing trends of other multiscalar drought indices are insignificant at time scale less than 3 months. |
| format | Article |
| id | doaj-art-0e8488a4568641a681328ebe8c4d53c5 |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-0e8488a4568641a681328ebe8c4d53c52025-02-03T05:58:35ZengWileyAdvances in Meteorology1687-93091687-93172016-01-01201610.1155/2016/91595329159532Standardized Water Budget Index and Validation in Drought Estimation of Haihe River Basin, North ChinaShaohua Liu0Denghua Yan1Hao Wang2Chuanzhe Li3Baisha Weng4Tianling Qin5State 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, 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, 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, ChinaThe physical-based drought indices such as the self-calibrated Palmer Drought Severity Index (sc-PDSI) with the fixed time scale is inadequate for the multiscalar drought assessment, and the multiscalar drought indices including Standardized Precipitation Index (SPI), Reconnaissance Drought Index (RDI), and Standardized Precipitation Evapotranspiration Index (SPEI) based on the meteorological factors are lack of physical mechanism and cannot depict the actual water budget. To fill this gap, the Standardized Water Budget Index (SWBI) is constructed based on the difference between areal precipitation and actual evapotranspiration (AET), which can describe the actual water budget but also assess the drought at multiple time scales. Then, sc-PDSI was taken as the reference drought index to compare with multiscalar drought indices at different time scale in Haihe River basin. The result shows that SWBI correlates better with sc-PDSI and the RMSE of SWBI is less than other multiscalar drought indices. In addition, all of drought indices show a decreasing trend in Haihe River Basin, possibly due to the decreasing precipitation from 1961 to 2010. The decreasing trends of SWBI were significant and consistent at all the time scales, while the decreasing trends of other multiscalar drought indices are insignificant at time scale less than 3 months.http://dx.doi.org/10.1155/2016/9159532 |
| spellingShingle | Shaohua Liu Denghua Yan Hao Wang Chuanzhe Li Baisha Weng Tianling Qin Standardized Water Budget Index and Validation in Drought Estimation of Haihe River Basin, North China Advances in Meteorology |
| title | Standardized Water Budget Index and Validation in Drought Estimation of Haihe River Basin, North China |
| title_full | Standardized Water Budget Index and Validation in Drought Estimation of Haihe River Basin, North China |
| title_fullStr | Standardized Water Budget Index and Validation in Drought Estimation of Haihe River Basin, North China |
| title_full_unstemmed | Standardized Water Budget Index and Validation in Drought Estimation of Haihe River Basin, North China |
| title_short | Standardized Water Budget Index and Validation in Drought Estimation of Haihe River Basin, North China |
| title_sort | standardized water budget index and validation in drought estimation of haihe river basin north china |
| url | http://dx.doi.org/10.1155/2016/9159532 |
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