Projected changes in days with zero‐crossings for Norway
Abstract This paper describes annual and seasonal changes in the number of days with 0°C crossings, comparing projections (2071–2100) based upon regional climate model (RCM) results under the medium and high emission scenarios with the period 1971–2000. A trend analysis of historical observations of...
Published in: | International Journal of Climatology |
---|---|
Main Authors: | , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2020
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/joc.6913 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6913 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6913 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6913 |
id |
crwiley:10.1002/joc.6913 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/joc.6913 2024-09-15T18:06:13+00:00 Projected changes in days with zero‐crossings for Norway Nilsen, Irene Brox Hanssen‐Bauer, Inger Tveito, Ole Einar Wong, Wai Kwok Norges Forskningsråd 2020 http://dx.doi.org/10.1002/joc.6913 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6913 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6913 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6913 en eng Wiley http://creativecommons.org/licenses/by/4.0/ International Journal of Climatology volume 41, issue 4, page 2173-2188 ISSN 0899-8418 1097-0088 journal-article 2020 crwiley https://doi.org/10.1002/joc.6913 2024-08-01T04:20:05Z Abstract This paper describes annual and seasonal changes in the number of days with 0°C crossings, comparing projections (2071–2100) based upon regional climate model (RCM) results under the medium and high emission scenarios with the period 1971–2000. A trend analysis of historical observations of days with zero‐crossings (DZCs) for the period 1971–2016 showed a general increase in DZCs in cold seasons and regions and a decrease in DZCs in mild seasons and regions. A cold bias in the unadjusted EURO‐CORDEX model ensemble rendered bias‐adjustment necessary before analyses. In regions and seasons that are mild, temperatures will exceed 0°C during a larger part of the year by the end of this century, and the number of DZCs is thus projected to decrease. This decrease was found for lowland regions in spring and coastal regions in winter. In regions and seasons that are cold, temperatures will rise up above 0°C for a larger part of the year, such that the number of DZCs is projected to give more frequent crossings of the 0°C threshold. This increase was found for inland regions in winter and Finnmark, the northernmost county, in spring. Thus, more frequent icing of the snowpack is expected in Finnmark. However, less frequent icing in coastal and lowland regions may indicate a lesser need for winter road maintenance. Article in Journal/Newspaper Finnmark Finnmark Wiley Online Library International Journal of Climatology 41 4 2173 2188 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract This paper describes annual and seasonal changes in the number of days with 0°C crossings, comparing projections (2071–2100) based upon regional climate model (RCM) results under the medium and high emission scenarios with the period 1971–2000. A trend analysis of historical observations of days with zero‐crossings (DZCs) for the period 1971–2016 showed a general increase in DZCs in cold seasons and regions and a decrease in DZCs in mild seasons and regions. A cold bias in the unadjusted EURO‐CORDEX model ensemble rendered bias‐adjustment necessary before analyses. In regions and seasons that are mild, temperatures will exceed 0°C during a larger part of the year by the end of this century, and the number of DZCs is thus projected to decrease. This decrease was found for lowland regions in spring and coastal regions in winter. In regions and seasons that are cold, temperatures will rise up above 0°C for a larger part of the year, such that the number of DZCs is projected to give more frequent crossings of the 0°C threshold. This increase was found for inland regions in winter and Finnmark, the northernmost county, in spring. Thus, more frequent icing of the snowpack is expected in Finnmark. However, less frequent icing in coastal and lowland regions may indicate a lesser need for winter road maintenance. |
author2 |
Norges Forskningsråd |
format |
Article in Journal/Newspaper |
author |
Nilsen, Irene Brox Hanssen‐Bauer, Inger Tveito, Ole Einar Wong, Wai Kwok |
spellingShingle |
Nilsen, Irene Brox Hanssen‐Bauer, Inger Tveito, Ole Einar Wong, Wai Kwok Projected changes in days with zero‐crossings for Norway |
author_facet |
Nilsen, Irene Brox Hanssen‐Bauer, Inger Tveito, Ole Einar Wong, Wai Kwok |
author_sort |
Nilsen, Irene Brox |
title |
Projected changes in days with zero‐crossings for Norway |
title_short |
Projected changes in days with zero‐crossings for Norway |
title_full |
Projected changes in days with zero‐crossings for Norway |
title_fullStr |
Projected changes in days with zero‐crossings for Norway |
title_full_unstemmed |
Projected changes in days with zero‐crossings for Norway |
title_sort |
projected changes in days with zero‐crossings for norway |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1002/joc.6913 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6913 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6913 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6913 |
genre |
Finnmark Finnmark |
genre_facet |
Finnmark Finnmark |
op_source |
International Journal of Climatology volume 41, issue 4, page 2173-2188 ISSN 0899-8418 1097-0088 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/joc.6913 |
container_title |
International Journal of Climatology |
container_volume |
41 |
container_issue |
4 |
container_start_page |
2173 |
op_container_end_page |
2188 |
_version_ |
1810443698764251136 |