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The Influence of Surface Sediment Presence on Observed Passive Microwave Brightness Temperatures of First-Year Sea Ice during the Summer Melt Period

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dc.contributor.author Harasyn, Madison
dc.contributor.author Isleifson, Dustin
dc.contributor.author Barber, David
dc.date.accessioned 2020-08-17T21:28:58Z
dc.date.available 2020-08-17T21:28:58Z
dc.date.issued 2019-06-17
dc.date.submitted 2020-08-17T21:28:58Z en_US
dc.identifier.citation Harasyn, M. L., Isleifson, D., Barber, D. G., 2019. The Influence of Surface Sediment Presence on Observed Passive Microwave Brightness Temperatures of First-Year Sea Ice during the Summer Melt Period, Can. J. Remote.Sens. 45:3-4, 333-349. http://doi.org/10.1080/07038992.2019.1625759. en_US
dc.identifier.issn 0703-8992
dc.identifier.issn 1712-7971
dc.identifier.uri http://hdl.handle.net/1993/34866
dc.description.abstract Knowledge on the influence of sea ice sediment on passive microwave brightness temperatures (TB) is currently limited, leading to potential inaccuracies in derived sea ice concentrations where this ice exists. We propose that sediment may influence TB in two ways: (i) by altering the surface dielectrics, or (ii) by generating differential melt rates across the ice surface, increasing surface roughness. This study will examine the second proposed hypothesis through a multi-platform analysis, combining in-situ passive microwave and unmanned aerial vehicle (UAV) data. UAV image analysis shows a negative relationship between surface elevation and sediment concentration. Comparing this with observed TB shows that horizontally polarized emissions are the most sensitive to rougher ice surfaces with 19 and 37 GHz TB decreasing rapidly with increased incidence angle. At a 55 incidence angle, 89 GHz offers the greatest potential for discriminating sea ice surfaces influenced by sediment presence, as TB are greater in both polarizations in comparison with non-sediment-laden ice. Results from this research provide evidence for a relationship between sea ice surface sediment and passive microwave signature, meriting future research in this field. en_US
dc.description.sponsorship Canada Research Chair funding (DGB), NSERC discovery grant funding (DGB and DI), the University of Manitoba Graduate Fellowship (UMGF) and the Northern Scientific Training Program (NSTP) en_US
dc.language.iso en en_US
dc.publisher Taylor & Francis Group en_US
dc.rights info:eu-repo/semantics/openAccess
dc.subject passive microwave brightness temperatures en_US
dc.subject sea ice en_US
dc.subject sea ice surface sediment en_US
dc.subject UAV en_US
dc.title The Influence of Surface Sediment Presence on Observed Passive Microwave Brightness Temperatures of First-Year Sea Ice during the Summer Melt Period en_US
dc.type Article en_US
dc.type info:eu-repo/semantics/article
dc.identifier.doi 10.1080/07038992.2019.1625759


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