Winter Sentinel-1 Backscatter as a Predictor of Spring Arctic Sea Ice Melt Pond Fraction

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dc.contributor.author Scharien, Randall K.
dc.contributor.author Segal, Rebecca
dc.contributor.author Nasonova, Sasha
dc.contributor.author Nandan, Vishnu
dc.contributor.author Howell, Stephen E. L.
dc.contributor.author Haas, Christian
dc.date.accessioned 2019-03-13T05:23:15Z
dc.date.available 2019-03-13T05:23:15Z
dc.date.copyright 2017 en_US
dc.date.issued 2017
dc.identifier.citation Scharien, R. K.; Segal, R.; Nasonova, S.; Nandan, V.; Howell, S. E. L.; & Haas, C. (2017). Winter Sentinel-1 backscatter as a predictor of spring Arctic sea ice melt pond fraction. Geophysical Research Letters, 44(24). DOI: 10.1002/2017GL075547 en_US
dc.identifier.uri https://doi.org/10.1002/2017GL075547
dc.identifier.uri http://hdl.handle.net/1828/10645
dc.description.abstract Spring melt pond fraction (fp) has been shown to influence September sea ice extent and, with a growing need to improve melt pond physics in climate and forecast models, observations at large spatial scales are needed. We present a novel technique for estimating fp on sea ice at high spatial resolution from the Sentinel‐1 satellite during the winter period leading up to spring melt. A strong correlation (r = −0.85) is found between winter radar backscatter and fp from first‐year and multiyear sea ice data collected in the Canadian Arctic Archipelago (CAA) in 2015. Observations made in the CAA in 2016 are used to validate a fp retrieval algorithm, and a fp prediction for the CAA in 2017 is made. The method is effective using the horizontal transmit and receive polarization channel only and shows promise for providing seasonal, pan‐Arctic, fp maps for improved understanding of melt pond distributions and forecast model skill. en_US
dc.description.sponsorship Data collection and analysis were supported by funds from Natural Sciences and Engineering Research Council (NSERC) Discovery Grant (DG), Marine Environmental Observation, Prediction, and Response Network (MEOPAR), and the Changing Earth Science Network, part of the European Space Agency's Support To Science Element (STSE). The authors declare no financial conflicts of interests. Sentinel-1 data are available from the online database Copernicus Open Access Hub (https://scihub.copernicus.eu/). GeoEye-1 data are available at a cost from the DigitalGlobe database (https://browse.digitalglobe.com/). Supporting data are included as Data Set S1. Under certain terms and conditions, GeoEye-1 data may be available free of charge from the European Space Agency. en_US
dc.language.iso en en_US
dc.publisher Geophysical Research Letters en_US
dc.subject sea ice en_US
dc.subject melt ponds en_US
dc.subject microwave backscatter en_US
dc.subject Sentinel-1 en_US
dc.subject seasonal forecast en_US
dc.title Winter Sentinel-1 Backscatter as a Predictor of Spring Arctic Sea Ice Melt Pond Fraction en_US
dc.type Article en_US
dc.description.scholarlevel Faculty en_US
dc.description.reviewstatus Reviewed en_US

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