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...

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Autores principales:	Aline Falck, Javier Tomasella, Fabrice Papa
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	satellite mission update latency initial condition hydrological model floods Science Q
Acceso en línea:	https://doaj.org/article/efcbc87cb2384823b20ff42fd989ebcd
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spelling	oai:doaj.org-article:efcbc87cb2384823b20ff42fd989ebcd2021-11-11T18:57:47ZAssessing the Potential of Upcoming Satellite Altimeter Missions in Operational Flood Forecasting Systems10.3390/rs132144592072-4292https://doaj.org/article/efcbc87cb2384823b20ff42fd989ebcd2021-11-01T00:00:00Zhttps://www.mdpi.com/2072-4292/13/21/4459https://doaj.org/toc/2072-4292This 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.Aline FalckJavier TomasellaFabrice PapaMDPI AGarticlesatellite missionupdatelatencyinitial conditionhydrological modelfloodsScienceQENRemote Sensing, Vol 13, Iss 4459, p 4459 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	satellite mission update latency initial condition hydrological model floods Science Q
spellingShingle	satellite mission update latency initial condition hydrological model floods Science Q Aline Falck Javier Tomasella Fabrice Papa Assessing the Potential of Upcoming Satellite Altimeter Missions in Operational Flood Forecasting Systems
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.
format	article
author	Aline Falck Javier Tomasella Fabrice Papa
author_facet	Aline Falck Javier Tomasella Fabrice Papa
author_sort	Aline Falck
title	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_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_sort	assessing the potential of upcoming satellite altimeter missions in operational flood forecasting systems
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/efcbc87cb2384823b20ff42fd989ebcd
work_keys_str_mv	AT alinefalck assessingthepotentialofupcomingsatellitealtimetermissionsinoperationalfloodforecastingsystems AT javiertomasella assessingthepotentialofupcomingsatellitealtimetermissionsinoperationalfloodforecastingsystems AT fabricepapa assessingthepotentialofupcomingsatellitealtimetermissionsinoperationalfloodforecastingsystems
_version_	1718431679501041664

Assessing the Potential of Upcoming Satellite Altimeter Missions in Operational Flood Forecasting Systems

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