First-year sea ice melt pond fraction estimation from dual-polarisation C-band SAR – Part 1: In situ observations
Understanding the evolution of melt ponds on Arctic sea ice is important for climate model parameterisations, weather forecast models and process studies involving mass, energy and biogeochemical exchanges across the ocean–sea ice–atmosphere interface. A field campaign was conducted in a region of l...
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ftdoajarticles:oai:doaj.org/article:e2b82502a30f419aafea554b65d46a8c 2023-05-15T14:28:56+02:00 First-year sea ice melt pond fraction estimation from dual-polarisation C-band SAR – Part 1: In situ observations R. K. Scharien J. Landy D. G. Barber 2014-11-01T00:00:00Z https://doi.org/10.5194/tc-8-2147-2014 https://doaj.org/article/e2b82502a30f419aafea554b65d46a8c EN eng Copernicus Publications http://www.the-cryosphere.net/8/2147/2014/tc-8-2147-2014.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-8-2147-2014 https://doaj.org/article/e2b82502a30f419aafea554b65d46a8c The Cryosphere, Vol 8, Iss 6, Pp 2147-2162 (2014) Environmental sciences GE1-350 Geology QE1-996.5 article 2014 ftdoajarticles https://doi.org/10.5194/tc-8-2147-2014 2022-12-31T02:39:21Z Understanding the evolution of melt ponds on Arctic sea ice is important for climate model parameterisations, weather forecast models and process studies involving mass, energy and biogeochemical exchanges across the ocean–sea ice–atmosphere interface. A field campaign was conducted in a region of level first-year sea ice (FYI) in the central Canadian Arctic Archipelago (CAA), during the summer of 2012, to examine the potential for estimating melt pond fraction ( f p ) from satellite synthetic aperture radar (SAR). In this study, 5.5 GHz (C-band) dual co- (HH + VV – horizontal transmit and horizontal receive + vertical transmit and vertical receive) and cross-polarisation (HV + HH – horizontal transmit and vertical receive + horizontal transmit and horizontal receive) radar scatterometer measurements of melt-pond-covered FYI are combined with ice and pond properties to analyse the effects of in situ physical and morphological changes on backscatter parameters. Surface roughness statistics of ice and ponds are characterised and compared to the validity domains of the Bragg and integral equation model (IEM) scattering models. Experimental and model results are used to outline the potential and limitations of the co-polarisation ratio (VV / HH) for retrieving melt pond information, including f p , at large incidence angles (≥35°). Despite high variability in cross-polarisation ratio (HV / HH) magnitudes, increases at small incidence angles (<30°) are attributed to the formation of ice lids on ponds. Implications of the results for pond information retrievals from satellite C-, L- and P-band SARs are discussed. Article in Journal/Newspaper Arctic Archipelago Arctic Canadian Arctic Archipelago Sea ice The Cryosphere Directory of Open Access Journals: DOAJ Articles Arctic Canadian Arctic Archipelago The Cryosphere 8 6 2147 2162 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 R. K. Scharien J. Landy D. G. Barber First-year sea ice melt pond fraction estimation from dual-polarisation C-band SAR – Part 1: In situ observations |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Understanding the evolution of melt ponds on Arctic sea ice is important for climate model parameterisations, weather forecast models and process studies involving mass, energy and biogeochemical exchanges across the ocean–sea ice–atmosphere interface. A field campaign was conducted in a region of level first-year sea ice (FYI) in the central Canadian Arctic Archipelago (CAA), during the summer of 2012, to examine the potential for estimating melt pond fraction ( f p ) from satellite synthetic aperture radar (SAR). In this study, 5.5 GHz (C-band) dual co- (HH + VV – horizontal transmit and horizontal receive + vertical transmit and vertical receive) and cross-polarisation (HV + HH – horizontal transmit and vertical receive + horizontal transmit and horizontal receive) radar scatterometer measurements of melt-pond-covered FYI are combined with ice and pond properties to analyse the effects of in situ physical and morphological changes on backscatter parameters. Surface roughness statistics of ice and ponds are characterised and compared to the validity domains of the Bragg and integral equation model (IEM) scattering models. Experimental and model results are used to outline the potential and limitations of the co-polarisation ratio (VV / HH) for retrieving melt pond information, including f p , at large incidence angles (≥35°). Despite high variability in cross-polarisation ratio (HV / HH) magnitudes, increases at small incidence angles (<30°) are attributed to the formation of ice lids on ponds. Implications of the results for pond information retrievals from satellite C-, L- and P-band SARs are discussed. |
format |
Article in Journal/Newspaper |
author |
R. K. Scharien J. Landy D. G. Barber |
author_facet |
R. K. Scharien J. Landy D. G. Barber |
author_sort |
R. K. Scharien |
title |
First-year sea ice melt pond fraction estimation from dual-polarisation C-band SAR – Part 1: In situ observations |
title_short |
First-year sea ice melt pond fraction estimation from dual-polarisation C-band SAR – Part 1: In situ observations |
title_full |
First-year sea ice melt pond fraction estimation from dual-polarisation C-band SAR – Part 1: In situ observations |
title_fullStr |
First-year sea ice melt pond fraction estimation from dual-polarisation C-band SAR – Part 1: In situ observations |
title_full_unstemmed |
First-year sea ice melt pond fraction estimation from dual-polarisation C-band SAR – Part 1: In situ observations |
title_sort |
first-year sea ice melt pond fraction estimation from dual-polarisation c-band sar – part 1: in situ observations |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/tc-8-2147-2014 https://doaj.org/article/e2b82502a30f419aafea554b65d46a8c |
geographic |
Arctic Canadian Arctic Archipelago |
geographic_facet |
Arctic Canadian Arctic Archipelago |
genre |
Arctic Archipelago Arctic Canadian Arctic Archipelago Sea ice The Cryosphere |
genre_facet |
Arctic Archipelago Arctic Canadian Arctic Archipelago Sea ice The Cryosphere |
op_source |
The Cryosphere, Vol 8, Iss 6, Pp 2147-2162 (2014) |
op_relation |
http://www.the-cryosphere.net/8/2147/2014/tc-8-2147-2014.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-8-2147-2014 https://doaj.org/article/e2b82502a30f419aafea554b65d46a8c |
op_doi |
https://doi.org/10.5194/tc-8-2147-2014 |
container_title |
The Cryosphere |
container_volume |
8 |
container_issue |
6 |
container_start_page |
2147 |
op_container_end_page |
2162 |
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1766303051939840000 |