Ice extent in sub-arctic fjords and coastal areas from 2001 to 2019 analyzed from MODIS imagery
Results examining variations in the ice extent along the Norwegian coastline based on the analysis of Moderate Resolution Imaging Spectroradiometer (MODIS) images from 2001 to 2019, February through May, are presented. A total of 386 fjords and coastal areas were outlined and grouped into ten region...
Published in: | Annals of Glaciology |
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Language: | English |
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Cambridge University Press
2020
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Online Access: | https://hdl.handle.net/10037/18730 https://doi.org/10.1017/aog.2020.34 |
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ftunivtroemsoe:oai:munin.uit.no:10037/18730 2023-05-15T13:29:20+02:00 Ice extent in sub-arctic fjords and coastal areas from 2001 to 2019 analyzed from MODIS imagery O'Sadnick, Megan Eileen Petrich, Chris Brekke, Camilla Skardhamar, Jofrid 2020-06-03 https://hdl.handle.net/10037/18730 https://doi.org/10.1017/aog.2020.34 eng eng Cambridge University Press Annals of Glaciology Norges forskningsråd: 237906 info:eu-repo/grantAgreement/RCN/SFI/237906/Norway/Centre for Integrated Remote Sensing and Forecasting for Arctic Operations/CIRFA/ O'Sadnick, Petrich C, Brekke, Skardhamar. Ice extent in sub-arctic fjords and coastal areas from 2001 to 2019 analyzed from MODIS imagery. Annals of Glaciology. 2020 FRIDAID 1816115 doi:10.1017/aog.2020.34 0260-3055 1727-5644 https://hdl.handle.net/10037/18730 openAccess Copyright 2020 The Author(s) VDP::Teknologi: 500::Marin teknologi: 580::Annen marin teknologi: 589 VDP::Technology: 500::Marine technology: 580::Other marine technology: 589 Ice atmosphere interactions / Ice/atmosphere interactions Ice ocean interactions / Ice ocean interactions Sea ice / Sea ice Sea-ice growth and decay / Sea-ice growth and decay Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2020 ftunivtroemsoe https://doi.org/10.1017/aog.2020.34 2021-06-25T17:57:32Z Results examining variations in the ice extent along the Norwegian coastline based on the analysis of Moderate Resolution Imaging Spectroradiometer (MODIS) images from 2001 to 2019, February through May, are presented. A total of 386 fjords and coastal areas were outlined and grouped into ten regions to assess seasonal and long-term trends in ice extent. In addition, three fjords were examined to investigate how ice extent may vary over short distances (<100 km). Of the 386 outlined, 47 fjords/coastal areas held >5 km 2 of ice at least once between 2001 and 2019. Over this span of time, no statistically significant trend in ice extent is found for all ten regions; however, variations between regions and years are evident. Ice extent is assessed through comparison to three weather variables – freezing degree days (FDD), daily new snowfall and daily freshwater supply from rainfall plus snowmelt. Six out of ten regions are significantly positively correlated ( p < 0.05) to FDD. In addition, ice in two regions is significantly positively correlated to daily new snowfall, and in one region negatively correlated to rainfall plus snowmelt. The importance of fjord geometry and bathymetry as well as other weather variables including wind is discussed. Article in Journal/Newspaper Annals of Glaciology Arctic Arctic Sea ice University of Tromsø: Munin Open Research Archive Arctic Annals of Glaciology 61 82 210 226 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Teknologi: 500::Marin teknologi: 580::Annen marin teknologi: 589 VDP::Technology: 500::Marine technology: 580::Other marine technology: 589 Ice atmosphere interactions / Ice/atmosphere interactions Ice ocean interactions / Ice ocean interactions Sea ice / Sea ice Sea-ice growth and decay / Sea-ice growth and decay |
spellingShingle |
VDP::Teknologi: 500::Marin teknologi: 580::Annen marin teknologi: 589 VDP::Technology: 500::Marine technology: 580::Other marine technology: 589 Ice atmosphere interactions / Ice/atmosphere interactions Ice ocean interactions / Ice ocean interactions Sea ice / Sea ice Sea-ice growth and decay / Sea-ice growth and decay O'Sadnick, Megan Eileen Petrich, Chris Brekke, Camilla Skardhamar, Jofrid Ice extent in sub-arctic fjords and coastal areas from 2001 to 2019 analyzed from MODIS imagery |
topic_facet |
VDP::Teknologi: 500::Marin teknologi: 580::Annen marin teknologi: 589 VDP::Technology: 500::Marine technology: 580::Other marine technology: 589 Ice atmosphere interactions / Ice/atmosphere interactions Ice ocean interactions / Ice ocean interactions Sea ice / Sea ice Sea-ice growth and decay / Sea-ice growth and decay |
description |
Results examining variations in the ice extent along the Norwegian coastline based on the analysis of Moderate Resolution Imaging Spectroradiometer (MODIS) images from 2001 to 2019, February through May, are presented. A total of 386 fjords and coastal areas were outlined and grouped into ten regions to assess seasonal and long-term trends in ice extent. In addition, three fjords were examined to investigate how ice extent may vary over short distances (<100 km). Of the 386 outlined, 47 fjords/coastal areas held >5 km 2 of ice at least once between 2001 and 2019. Over this span of time, no statistically significant trend in ice extent is found for all ten regions; however, variations between regions and years are evident. Ice extent is assessed through comparison to three weather variables – freezing degree days (FDD), daily new snowfall and daily freshwater supply from rainfall plus snowmelt. Six out of ten regions are significantly positively correlated ( p < 0.05) to FDD. In addition, ice in two regions is significantly positively correlated to daily new snowfall, and in one region negatively correlated to rainfall plus snowmelt. The importance of fjord geometry and bathymetry as well as other weather variables including wind is discussed. |
format |
Article in Journal/Newspaper |
author |
O'Sadnick, Megan Eileen Petrich, Chris Brekke, Camilla Skardhamar, Jofrid |
author_facet |
O'Sadnick, Megan Eileen Petrich, Chris Brekke, Camilla Skardhamar, Jofrid |
author_sort |
O'Sadnick, Megan Eileen |
title |
Ice extent in sub-arctic fjords and coastal areas from 2001 to 2019 analyzed from MODIS imagery |
title_short |
Ice extent in sub-arctic fjords and coastal areas from 2001 to 2019 analyzed from MODIS imagery |
title_full |
Ice extent in sub-arctic fjords and coastal areas from 2001 to 2019 analyzed from MODIS imagery |
title_fullStr |
Ice extent in sub-arctic fjords and coastal areas from 2001 to 2019 analyzed from MODIS imagery |
title_full_unstemmed |
Ice extent in sub-arctic fjords and coastal areas from 2001 to 2019 analyzed from MODIS imagery |
title_sort |
ice extent in sub-arctic fjords and coastal areas from 2001 to 2019 analyzed from modis imagery |
publisher |
Cambridge University Press |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/18730 https://doi.org/10.1017/aog.2020.34 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Annals of Glaciology Arctic Arctic Sea ice |
genre_facet |
Annals of Glaciology Arctic Arctic Sea ice |
op_relation |
Annals of Glaciology Norges forskningsråd: 237906 info:eu-repo/grantAgreement/RCN/SFI/237906/Norway/Centre for Integrated Remote Sensing and Forecasting for Arctic Operations/CIRFA/ O'Sadnick, Petrich C, Brekke, Skardhamar. Ice extent in sub-arctic fjords and coastal areas from 2001 to 2019 analyzed from MODIS imagery. Annals of Glaciology. 2020 FRIDAID 1816115 doi:10.1017/aog.2020.34 0260-3055 1727-5644 https://hdl.handle.net/10037/18730 |
op_rights |
openAccess Copyright 2020 The Author(s) |
op_doi |
https://doi.org/10.1017/aog.2020.34 |
container_title |
Annals of Glaciology |
container_volume |
61 |
container_issue |
82 |
container_start_page |
210 |
op_container_end_page |
226 |
_version_ |
1765999966778556416 |