Effects of recent temperature variability and warming on the Oulu-Hailuoto ice road season in the northern Baltic Sea
Abstract In cold climate regions, ice roads are engineered as temporary winter transportation routes on frozen lakes, rivers and seas. The ice road season start, end and duration principally depend upon ice thickness, which is controlled by surface air temperature (SAT) in terms of freezing and thaw...
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ftunivoulu:oai:oulu.fi:nbnfi-fe201803146026 2023-07-30T04:01:59+02:00 Effects of recent temperature variability and warming on the Oulu-Hailuoto ice road season in the northern Baltic Sea Kiani, S. (Sepideh) Irannezhad, M. (Masoud) Ronkanen, A.-K. (Anna-Kaisa) Moradkhani, H. (Hamid) Kløve, B. (Bjørn) 2018 application/pdf http://urn.fi/urn:nbn:fi-fe201803146026 eng eng Elsevier info:eu-repo/semantics/altIdentifier/pissn/0165-232X info:eu-repo/semantics/altIdentifier/eissn/1872-7441 info:eu-repo/semantics/openAccess © 2018 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. https://creativecommons.org/licenses/by-nc-nd/4.0/ Atmospheric circulation pattern Baltic Sea Ice road season Ice thickness info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 2018 ftunivoulu 2023-07-08T19:59:41Z Abstract In cold climate regions, ice roads are engineered as temporary winter transportation routes on frozen lakes, rivers and seas. The ice road season start, end and duration principally depend upon ice thickness, which is controlled by surface air temperature (SAT) in terms of freezing and thawing degree-days (FDD and TDD, respectively). Both FDD and TDD are indicators of climate variability and change, and are naturally influenced by large-scale atmospheric circulation patterns (ACPs). This study examined the role of ACPs in interannual variations in the operating season of the Oulu-Hailuoto ice road in the Bay of Bothnia, northern Baltic Sea, during 1974–2009. Significant (p < 0.05) shortening in duration of the ice road season, mainly attributable to later start and earlier end days, was observed. In the Oulu-Hailuoto area, maximum ice thickness showed significant declines over time. This sea ice thinning was associated with SAT warming in cold months, manifested by statistically significant decreases in cumulative FDD during October–January within the water year (September–August). Significant increases in cumulative TDD during February–April, reflecting warmer SAT in mild months, resulted in earlier end day for the Oulu-Hailuoto ice road season. The Arctic Oscillation (AO) was the most influential ACP for variations in cumulative FDD (October–January), and accordingly for sea ice thickness and start day of the Oulu-Hailuoto ice road season. However, cumulative TDD (February–April) showed significant positive correlations with the East Atlantic (EA) pattern, which also controlled the end day of the Oulu-Hailuoto ice road season. Article in Journal/Newspaper Arctic Sea ice Jultika - University of Oulu repository Arctic |
institution |
Open Polar |
collection |
Jultika - University of Oulu repository |
op_collection_id |
ftunivoulu |
language |
English |
topic |
Atmospheric circulation pattern Baltic Sea Ice road season Ice thickness |
spellingShingle |
Atmospheric circulation pattern Baltic Sea Ice road season Ice thickness Kiani, S. (Sepideh) Irannezhad, M. (Masoud) Ronkanen, A.-K. (Anna-Kaisa) Moradkhani, H. (Hamid) Kløve, B. (Bjørn) Effects of recent temperature variability and warming on the Oulu-Hailuoto ice road season in the northern Baltic Sea |
topic_facet |
Atmospheric circulation pattern Baltic Sea Ice road season Ice thickness |
description |
Abstract In cold climate regions, ice roads are engineered as temporary winter transportation routes on frozen lakes, rivers and seas. The ice road season start, end and duration principally depend upon ice thickness, which is controlled by surface air temperature (SAT) in terms of freezing and thawing degree-days (FDD and TDD, respectively). Both FDD and TDD are indicators of climate variability and change, and are naturally influenced by large-scale atmospheric circulation patterns (ACPs). This study examined the role of ACPs in interannual variations in the operating season of the Oulu-Hailuoto ice road in the Bay of Bothnia, northern Baltic Sea, during 1974–2009. Significant (p < 0.05) shortening in duration of the ice road season, mainly attributable to later start and earlier end days, was observed. In the Oulu-Hailuoto area, maximum ice thickness showed significant declines over time. This sea ice thinning was associated with SAT warming in cold months, manifested by statistically significant decreases in cumulative FDD during October–January within the water year (September–August). Significant increases in cumulative TDD during February–April, reflecting warmer SAT in mild months, resulted in earlier end day for the Oulu-Hailuoto ice road season. The Arctic Oscillation (AO) was the most influential ACP for variations in cumulative FDD (October–January), and accordingly for sea ice thickness and start day of the Oulu-Hailuoto ice road season. However, cumulative TDD (February–April) showed significant positive correlations with the East Atlantic (EA) pattern, which also controlled the end day of the Oulu-Hailuoto ice road season. |
format |
Article in Journal/Newspaper |
author |
Kiani, S. (Sepideh) Irannezhad, M. (Masoud) Ronkanen, A.-K. (Anna-Kaisa) Moradkhani, H. (Hamid) Kløve, B. (Bjørn) |
author_facet |
Kiani, S. (Sepideh) Irannezhad, M. (Masoud) Ronkanen, A.-K. (Anna-Kaisa) Moradkhani, H. (Hamid) Kløve, B. (Bjørn) |
author_sort |
Kiani, S. (Sepideh) |
title |
Effects of recent temperature variability and warming on the Oulu-Hailuoto ice road season in the northern Baltic Sea |
title_short |
Effects of recent temperature variability and warming on the Oulu-Hailuoto ice road season in the northern Baltic Sea |
title_full |
Effects of recent temperature variability and warming on the Oulu-Hailuoto ice road season in the northern Baltic Sea |
title_fullStr |
Effects of recent temperature variability and warming on the Oulu-Hailuoto ice road season in the northern Baltic Sea |
title_full_unstemmed |
Effects of recent temperature variability and warming on the Oulu-Hailuoto ice road season in the northern Baltic Sea |
title_sort |
effects of recent temperature variability and warming on the oulu-hailuoto ice road season in the northern baltic sea |
publisher |
Elsevier |
publishDate |
2018 |
url |
http://urn.fi/urn:nbn:fi-fe201803146026 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_relation |
info:eu-repo/semantics/altIdentifier/pissn/0165-232X info:eu-repo/semantics/altIdentifier/eissn/1872-7441 |
op_rights |
info:eu-repo/semantics/openAccess © 2018 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. https://creativecommons.org/licenses/by-nc-nd/4.0/ |
_version_ |
1772812719524675584 |