Evaluating the double-kernel smoothing technique of blending TRMM and gauge data to identify flood events in the Xiangjiang River Basin, China
AbstractIn the recent decades, mass casualties and property losses are caused by flood events. A combination of satellite and hydrological methods has been promoted owing to the advantages of satellite precipitation products (SPPs), such as their wide coverage and high spatiotemporal resolution; the...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2023-12-01
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| Series: | Geomatics, Natural Hazards & Risk |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/19475705.2023.2221991 |
| _version_ | 1827582588443688960 |
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| author | Yumeng Yang Yunjia Ma Jingyu Liu Baoyin Liu Juan Du Shanfeng He |
| author_facet | Yumeng Yang Yunjia Ma Jingyu Liu Baoyin Liu Juan Du Shanfeng He |
| author_sort | Yumeng Yang |
| collection | DOAJ |
| description | AbstractIn the recent decades, mass casualties and property losses are caused by flood events. A combination of satellite and hydrological methods has been promoted owing to the advantages of satellite precipitation products (SPPs), such as their wide coverage and high spatiotemporal resolution; these benefits may make up for the deficiencies of gauge data and make SPPs a good supplementary data source, especially for sparsely gauged areas. The present study employs the double-kernel smoothing technique (DS) to integrate TRMM precipitation data and gauge data and evaluates the performance of this method in identifying extreme flood events via the Hydrological Engineering Center-Hydrological Modeling System (HEC-HMS) in the humid Xiangjiang River Basin, China. Results show that the HEC-HMS driven by TRMM precipitation data can capture the 9 selected flood events accurately both before and after the merging process despite some deficiencies in the TRMM precipitation data. In addition, the merging method generally improved the consistency (CC increased from 0.04 to 0.24) and rainfall-detection capability of the TRMM precipitation data (FAR decreased by 9.12%, POD increased by 56.91% and HSS increased by 15.43%) and also promoted the overall hydrological simulation accuracy and reliability (the average CC increased from 0.86 to 0.96, the average NSE increased from 0.58 to 0.73). However, the blended TRMM precipitation data did not always outperform the nonblended data in terms of certain flood feature simulation details, such as the flood volume, flood peak and peak time. |
| first_indexed | 2024-03-08T22:52:48Z |
| format | Article |
| id | doaj.art-b4988d29590441cab776913f3502dcaf |
| institution | Directory Open Access Journal |
| issn | 1947-5705 1947-5713 |
| language | English |
| last_indexed | 2024-03-08T22:52:48Z |
| publishDate | 2023-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Geomatics, Natural Hazards & Risk |
| spelling | doaj.art-b4988d29590441cab776913f3502dcaf2023-12-16T08:49:46ZengTaylor & Francis GroupGeomatics, Natural Hazards & Risk1947-57051947-57132023-12-0114110.1080/19475705.2023.2221991Evaluating the double-kernel smoothing technique of blending TRMM and gauge data to identify flood events in the Xiangjiang River Basin, ChinaYumeng Yang0Yunjia Ma1Jingyu Liu2Baoyin Liu3Juan Du4Shanfeng He5School of Geography and Tourism, Qufu Normal University, Rizhao, ChinaSchool of Geography and Tourism, Qufu Normal University, Rizhao, ChinaKey Laboratory of Environment Change and Natural Disaster of Ministry of Education, Beijing Normal University, Beijing, ChinaInstitutes of Science and Development, Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Environment Change and Natural Disaster of Ministry of Education, Beijing Normal University, Beijing, ChinaSchool of Geography and Tourism, Qufu Normal University, Rizhao, ChinaAbstractIn the recent decades, mass casualties and property losses are caused by flood events. A combination of satellite and hydrological methods has been promoted owing to the advantages of satellite precipitation products (SPPs), such as their wide coverage and high spatiotemporal resolution; these benefits may make up for the deficiencies of gauge data and make SPPs a good supplementary data source, especially for sparsely gauged areas. The present study employs the double-kernel smoothing technique (DS) to integrate TRMM precipitation data and gauge data and evaluates the performance of this method in identifying extreme flood events via the Hydrological Engineering Center-Hydrological Modeling System (HEC-HMS) in the humid Xiangjiang River Basin, China. Results show that the HEC-HMS driven by TRMM precipitation data can capture the 9 selected flood events accurately both before and after the merging process despite some deficiencies in the TRMM precipitation data. In addition, the merging method generally improved the consistency (CC increased from 0.04 to 0.24) and rainfall-detection capability of the TRMM precipitation data (FAR decreased by 9.12%, POD increased by 56.91% and HSS increased by 15.43%) and also promoted the overall hydrological simulation accuracy and reliability (the average CC increased from 0.86 to 0.96, the average NSE increased from 0.58 to 0.73). However, the blended TRMM precipitation data did not always outperform the nonblended data in terms of certain flood feature simulation details, such as the flood volume, flood peak and peak time.https://www.tandfonline.com/doi/10.1080/19475705.2023.2221991TRMMprecipitation evaluationdouble-kernel smoothing techniqueflood eventsHEC-HMS |
| spellingShingle | Yumeng Yang Yunjia Ma Jingyu Liu Baoyin Liu Juan Du Shanfeng He Evaluating the double-kernel smoothing technique of blending TRMM and gauge data to identify flood events in the Xiangjiang River Basin, China Geomatics, Natural Hazards & Risk TRMM precipitation evaluation double-kernel smoothing technique flood events HEC-HMS |
| title | Evaluating the double-kernel smoothing technique of blending TRMM and gauge data to identify flood events in the Xiangjiang River Basin, China |
| title_full | Evaluating the double-kernel smoothing technique of blending TRMM and gauge data to identify flood events in the Xiangjiang River Basin, China |
| title_fullStr | Evaluating the double-kernel smoothing technique of blending TRMM and gauge data to identify flood events in the Xiangjiang River Basin, China |
| title_full_unstemmed | Evaluating the double-kernel smoothing technique of blending TRMM and gauge data to identify flood events in the Xiangjiang River Basin, China |
| title_short | Evaluating the double-kernel smoothing technique of blending TRMM and gauge data to identify flood events in the Xiangjiang River Basin, China |
| title_sort | evaluating the double kernel smoothing technique of blending trmm and gauge data to identify flood events in the xiangjiang river basin china |
| topic | TRMM precipitation evaluation double-kernel smoothing technique flood events HEC-HMS |
| url | https://www.tandfonline.com/doi/10.1080/19475705.2023.2221991 |
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