The changing Arctic Sea ice cover : regional and seasonal aspects
As global climate changes are becoming increasingly evident, increasing air temperatures, melting glaciers, rising sea levels, and decreasing biodiversity is observed at increasing rates worldwide. The Arctic sea ice cover has has become a key indicator of the ongoing global climate change through i...
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Norwegian University of Life Sciences, Ås
2014
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ftunivmob:oai:nmbu.brage.unit.no:11250/278105 2023-05-15T14:51:11+02:00 The changing Arctic Sea ice cover : regional and seasonal aspects Det arktiske havisdekket i endring - betraktninger over ulike regioner og årstider Steene, Rebekka Jastamin 2014 application/pdf http://hdl.handle.net/11250/278105 eng eng Norwegian University of Life Sciences, Ås http://hdl.handle.net/11250/278105 Navngivelse 3.0 Norge http://creativecommons.org/licenses/by/3.0/no/ CC-BY 91 Ice Climate Arctic VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 Master thesis 2014 ftunivmob 2021-09-23T20:15:35Z As global climate changes are becoming increasingly evident, increasing air temperatures, melting glaciers, rising sea levels, and decreasing biodiversity is observed at increasing rates worldwide. The Arctic sea ice cover has has become a key indicator of the ongoing global climate change through its substantial decline in both extent and thickness. In this study we show how the observed regression of the Northern Hemisphere sea ice is distributed over different regions of the Arctic Ocean and adjacent seas. We further provide an evaluation of to what extent the regions are re ecting changes during summer or winter seasons, exemplified by the months of September and March. We also relate the changes to observed atmospheric and oceanographic conditions. Data from passive microwave satellite measurements are used to investigate regional and seasonal time series of ice extent. All regions except one show a decreasing trend throughout the data record. It is found that six of twelve regions has seen an accelerated decline during the last decade. This is either caused by an increasingly smaller summer minimum, or by a prolongation of the regional summer season. It is further found that summer melting is initiated by atmospheric heat in the areas where the recession of ice extent most prominent. The process of freezing during winter is found to be particularly sensitive to the oceanic temperatures in the regions receiving currents of warm Atlantic Water. M-MF Master Thesis Arctic Arctic Ocean Arktis* Climate change Sea ice Open archive Norwegian University of Life Sciences: Brage NMBU Arctic Arctic Ocean |
institution |
Open Polar |
collection |
Open archive Norwegian University of Life Sciences: Brage NMBU |
op_collection_id |
ftunivmob |
language |
English |
topic |
Ice Climate Arctic VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 |
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Ice Climate Arctic VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 Steene, Rebekka Jastamin The changing Arctic Sea ice cover : regional and seasonal aspects |
topic_facet |
Ice Climate Arctic VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 |
description |
As global climate changes are becoming increasingly evident, increasing air temperatures, melting glaciers, rising sea levels, and decreasing biodiversity is observed at increasing rates worldwide. The Arctic sea ice cover has has become a key indicator of the ongoing global climate change through its substantial decline in both extent and thickness. In this study we show how the observed regression of the Northern Hemisphere sea ice is distributed over different regions of the Arctic Ocean and adjacent seas. We further provide an evaluation of to what extent the regions are re ecting changes during summer or winter seasons, exemplified by the months of September and March. We also relate the changes to observed atmospheric and oceanographic conditions. Data from passive microwave satellite measurements are used to investigate regional and seasonal time series of ice extent. All regions except one show a decreasing trend throughout the data record. It is found that six of twelve regions has seen an accelerated decline during the last decade. This is either caused by an increasingly smaller summer minimum, or by a prolongation of the regional summer season. It is further found that summer melting is initiated by atmospheric heat in the areas where the recession of ice extent most prominent. The process of freezing during winter is found to be particularly sensitive to the oceanic temperatures in the regions receiving currents of warm Atlantic Water. M-MF |
format |
Master Thesis |
author |
Steene, Rebekka Jastamin |
author_facet |
Steene, Rebekka Jastamin |
author_sort |
Steene, Rebekka Jastamin |
title |
The changing Arctic Sea ice cover : regional and seasonal aspects |
title_short |
The changing Arctic Sea ice cover : regional and seasonal aspects |
title_full |
The changing Arctic Sea ice cover : regional and seasonal aspects |
title_fullStr |
The changing Arctic Sea ice cover : regional and seasonal aspects |
title_full_unstemmed |
The changing Arctic Sea ice cover : regional and seasonal aspects |
title_sort |
changing arctic sea ice cover : regional and seasonal aspects |
publisher |
Norwegian University of Life Sciences, Ås |
publishDate |
2014 |
url |
http://hdl.handle.net/11250/278105 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Arktis* Climate change Sea ice |
genre_facet |
Arctic Arctic Ocean Arktis* Climate change Sea ice |
op_source |
91 |
op_relation |
http://hdl.handle.net/11250/278105 |
op_rights |
Navngivelse 3.0 Norge http://creativecommons.org/licenses/by/3.0/no/ |
op_rightsnorm |
CC-BY |
_version_ |
1766322238828576768 |