A remote sensing view of the 2020 extreme lake-expansion flood event into the Peace-Athabasca Dela floodplain—implications for the future SWOT mission

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dc.contributor.authorDesrochers, Nicholas M.
dc.contributor.authorPeters, Daniel L.
dc.contributor.authorSiles, Gabriela
dc.contributor.authorCharest, Elizabeth Cauvier
dc.contributor.authorTrudel, Mélanie
dc.contributor.authorLeconte, Robert
dc.date.accessioned2024-02-07T00:01:31Z
dc.date.available2024-02-07T00:01:31Z
dc.date.copyright2023en_US
dc.date.issued2023
dc.description.abstractThe Peace–Athabasca Delta (PAD) in western Canada is one of the largest inland deltas in the world. Flooding caused by the expansion of lakes beyond normal shorelines occurred during the summer of 2020 and provided a unique opportunity to evaluate the capabilities of remote sensing platforms to map surface water expansion into vegetated landscape with complex surface connectivity. Firstly, multi-source remotely sensed data via satellites were used to create a temporal reconstruction of the event spanning May to September. Optical synthetic aperture radar (SAR) and altimeter data were used to reconstruct surface water area and elevation as seen from space. Lastly, temporal water surface area and level data obtained from the existing satellites and hydrometric stations were used as input data in the CNES Large-Scale SWOT Simulator, which provided an overview of the newly launched SWOT satellite ability to monitor such flood events. The results show a 25% smaller water surface area for optical instruments compared to SAR. Simulations show that SWOT would have greatly increased the spatio-temporal understanding of the flood dynamics with complete PAD coverage three to four times per month. Overall, seasonal vegetation growth was a major obstacle for water surface area retrieval, especially for optical sensors.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThis work was supported in part by the Canadian Space Agency under Grant 14USWOTSH and Canadian Space Agency SWOT funding to Environment and Climate Change Canada (DL Peters).en_US
dc.identifier.citationDesrochers, N. M., Peters, D. L., Siles, G., Cauvier Charest, E., Trudel, M., & Leconte, R. (2023). A remote sensing view of the 2020 extreme lake-expansion flood event into the Peace–Athabasca Delta floodplain—implications for the future SWOT mission. Remote Sensing, 15(5), 1278. https://doi.org/10.3390/rs15051278en_US
dc.identifier.urihttps://doi.org/10.3390/rs15051278
dc.identifier.urihttp://hdl.handle.net/1828/15958
dc.language.isoenen_US
dc.publisherRemote Sensingen_US
dc.subjectPeace–Athabasca Delta
dc.subjectSWOT
dc.subjectSAR
dc.subjectoptical
dc.subjectaltimeter
dc.subjectflood surface area
dc.subjectflood monitoring
dc.subject.departmentDepartment of Geography
dc.titleA remote sensing view of the 2020 extreme lake-expansion flood event into the Peace-Athabasca Dela floodplain—implications for the future SWOT missionen_US
dc.typeArticleen_US

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