Assessing the Potential of Upcoming Satellite Altimeter Missions in Operational Flood Forecasting Systems
This study investigates the potential of observations with improved frequency and latency time of upcoming altimetry missions on the accuracy of flood forecasting and early warnings. To achieve this, we assessed the skill of the forecasts of a distributed hydrological model by assimilating different...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/13/21/4459 |
| _version_ | 1827677918041473024 |
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| author | Aline Falck Javier Tomasella Fabrice Papa |
| author_facet | Aline Falck Javier Tomasella Fabrice Papa |
| author_sort | Aline Falck |
| collection | DOAJ |
| description | This study investigates the potential of observations with improved frequency and latency time of upcoming altimetry missions on the accuracy of flood forecasting and early warnings. To achieve this, we assessed the skill of the forecasts of a distributed hydrological model by assimilating different historical discharge time frequencies and latencies in a framework that mimics an operational forecast system, using the European Ensemble Forecasting system as the forcing. Numerical experiments were performed in 22 sub-basins of the Tocantins-Araguaia Basin. Forecast skills were evaluated in terms of the Relative Operational Characteristics (ROC) as a function of the drainage area and the forecasts’ lead time. The results showed that increasing the frequency of data collection and reducing the latency time (especially 1 d update and low latency) had a significant impact on steep headwater sub-basins, where floods are usually more destructive. In larger basins, although the increased frequency of data collection improved the accuracy of the forecasts, the potential benefits were limited to the earlier lead times. |
| first_indexed | 2024-03-10T05:53:26Z |
| format | Article |
| id | doaj.art-efcbc87cb2384823b20ff42fd989ebcd |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T05:53:26Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-efcbc87cb2384823b20ff42fd989ebcd2023-11-22T21:33:46ZengMDPI AGRemote Sensing2072-42922021-11-011321445910.3390/rs13214459Assessing the Potential of Upcoming Satellite Altimeter Missions in Operational Flood Forecasting SystemsAline Falck0Javier Tomasella1Fabrice Papa2Centro Nacional de Monitoramento e Alerta de Desastres Naturais (CEMADEN), São José dos Campos 12.247-016, SP, BrazilCentro Nacional de Monitoramento e Alerta de Desastres Naturais (CEMADEN), São José dos Campos 12.247-016, SP, BrazilLaboratoire d’Etudes en Géophysique et Océanographie Spatiales (LEGOS), Université de Toulouse, IRD, CNES, CNRS, UPS-14 Avenue Edouard Belin, 31400 Toulouse, FranceThis study investigates the potential of observations with improved frequency and latency time of upcoming altimetry missions on the accuracy of flood forecasting and early warnings. To achieve this, we assessed the skill of the forecasts of a distributed hydrological model by assimilating different historical discharge time frequencies and latencies in a framework that mimics an operational forecast system, using the European Ensemble Forecasting system as the forcing. Numerical experiments were performed in 22 sub-basins of the Tocantins-Araguaia Basin. Forecast skills were evaluated in terms of the Relative Operational Characteristics (ROC) as a function of the drainage area and the forecasts’ lead time. The results showed that increasing the frequency of data collection and reducing the latency time (especially 1 d update and low latency) had a significant impact on steep headwater sub-basins, where floods are usually more destructive. In larger basins, although the increased frequency of data collection improved the accuracy of the forecasts, the potential benefits were limited to the earlier lead times.https://www.mdpi.com/2072-4292/13/21/4459satellite missionupdatelatencyinitial conditionhydrological modelfloods |
| spellingShingle | Aline Falck Javier Tomasella Fabrice Papa Assessing the Potential of Upcoming Satellite Altimeter Missions in Operational Flood Forecasting Systems Remote Sensing satellite mission update latency initial condition hydrological model floods |
| title | Assessing the Potential of Upcoming Satellite Altimeter Missions in Operational Flood Forecasting Systems |
| title_full | Assessing the Potential of Upcoming Satellite Altimeter Missions in Operational Flood Forecasting Systems |
| title_fullStr | Assessing the Potential of Upcoming Satellite Altimeter Missions in Operational Flood Forecasting Systems |
| title_full_unstemmed | Assessing the Potential of Upcoming Satellite Altimeter Missions in Operational Flood Forecasting Systems |
| title_short | Assessing the Potential of Upcoming Satellite Altimeter Missions in Operational Flood Forecasting Systems |
| title_sort | assessing the potential of upcoming satellite altimeter missions in operational flood forecasting systems |
| topic | satellite mission update latency initial condition hydrological model floods |
| url | https://www.mdpi.com/2072-4292/13/21/4459 |
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