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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Cambridge University Press
2020-09-01
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| Series: | Annals of Glaciology |
| Subjects: | |
| Online Access: | https://www.cambridge.org/core/product/identifier/S0260305520000348/type/journal_article |
| _version_ | 1811157320633155584 |
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| author | Megan O'Sadnick Chris Petrich Camilla Brekke Jofrid Skarðhamar |
| author_facet | Megan O'Sadnick Chris Petrich Camilla Brekke Jofrid Skarðhamar |
| author_sort | Megan O'Sadnick |
| collection | DOAJ |
| 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 km2 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. |
| first_indexed | 2024-04-10T05:04:08Z |
| format | Article |
| id | doaj.art-de483935eeba47449f974d82070a6cdd |
| institution | Directory Open Access Journal |
| issn | 0260-3055 1727-5644 |
| language | English |
| last_indexed | 2024-04-10T05:04:08Z |
| publishDate | 2020-09-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Annals of Glaciology |
| spelling | doaj.art-de483935eeba47449f974d82070a6cdd2023-03-09T12:27:41ZengCambridge University PressAnnals of Glaciology0260-30551727-56442020-09-016121022610.1017/aog.2020.34Ice extent in sub-arctic fjords and coastal areas from 2001 to 2019 analyzed from MODIS imageryMegan O'Sadnick0Chris Petrich1Camilla Brekke2Jofrid Skarðhamar3SINTEF Narvik, Narvik, Norway UiT – The Arctic University of Norway, Tromsø, NorwaySINTEF Narvik, Narvik, NorwayUiT – The Arctic University of Norway, Tromsø, NorwayInstitute of Marine Research, Tromsø, NorwayResults 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 km2 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.https://www.cambridge.org/core/product/identifier/S0260305520000348/type/journal_articleIce/atmosphere interactionsremote sensingsea icesea-ice growth and decayice/ocean interactions |
| spellingShingle | Megan O'Sadnick Chris Petrich Camilla Brekke Jofrid Skarðhamar Ice extent in sub-arctic fjords and coastal areas from 2001 to 2019 analyzed from MODIS imagery Annals of Glaciology Ice/atmosphere interactions remote sensing sea ice sea-ice growth and decay ice/ocean interactions |
| title | 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_short | 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 |
| topic | Ice/atmosphere interactions remote sensing sea ice sea-ice growth and decay ice/ocean interactions |
| url | https://www.cambridge.org/core/product/identifier/S0260305520000348/type/journal_article |
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