Recent changes in Arctic temperature extremes: warm and cold spells during winter and summer
In the Arctic, climate change manifests with the strongest warming trends on the globe, especially in the cold season. It is under debate if climate extremes change similarly strong. Our study provides detailed regional information about two selected temperature extreme indices in the Arctic, namely...
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ftdoajarticles:oai:doaj.org/article:b0668281c48342c99290cfccb612ca6a 2023-09-05T13:16:30+02:00 Recent changes in Arctic temperature extremes: warm and cold spells during winter and summer Heidrun Matthes Annette Rinke Klaus Dethloff 2015-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/10/11/114020 https://doaj.org/article/b0668281c48342c99290cfccb612ca6a EN eng IOP Publishing https://doi.org/10.1088/1748-9326/10/11/114020 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/10/11/114020 1748-9326 https://doaj.org/article/b0668281c48342c99290cfccb612ca6a Environmental Research Letters, Vol 10, Iss 11, p 114020 (2015) arctic temperature change climate extremes variability of temperature extremes Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2015 ftdoajarticles https://doi.org/10.1088/1748-9326/10/11/114020 2023-08-13T00:37:50Z In the Arctic, climate change manifests with the strongest warming trends on the globe, especially in the cold season. It is under debate if climate extremes change similarly strong. Our study provides detailed regional information about two selected temperature extreme indices in the Arctic, namely warm and cold spells in winter and summer. We analyze their temporal evolution and variability from 1979–2013, based on daily station data and ERA-Interim reanalysis. Calculated trends from both datasets suggest a widespread decrease of cold spells in winter and summer of up to −4 days/decade, with regional patches where trends are statistically significant throughout the Arctic. Winter trends are spatially heterogeneous, the reanalysis also shows small areas with statistically significant increases of cold spells throughout Siberia. Calculated changes in warm spells from both datasets are mostly small throughout the Arctic (less than ±1 day/decade) and statistically not significant. Remarkable exceptions are the Lena river basin in winter with a statistically significant decrease of up to −1.5 days/decade and areas in Scandinavia with statistically significant increases of up to 2.5 days/decade in winter and summer (again from both datasets). From the analysis of spell lengths, we find that there are no shifts from longer to shorter spells or vice versa with time, but long cold spells (events lasting for more than 15 days) disappear almost completely after the year 2000. There is a distinct inter-annual and decadal variability in the spells, which hinders the detection of significant trends for all spell categories in all regions. Article in Journal/Newspaper Arctic Climate change lena river Siberia Directory of Open Access Journals: DOAJ Articles Arctic Environmental Research Letters 10 11 114020 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
arctic temperature change climate extremes variability of temperature extremes Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
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arctic temperature change climate extremes variability of temperature extremes Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Heidrun Matthes Annette Rinke Klaus Dethloff Recent changes in Arctic temperature extremes: warm and cold spells during winter and summer |
topic_facet |
arctic temperature change climate extremes variability of temperature extremes Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
In the Arctic, climate change manifests with the strongest warming trends on the globe, especially in the cold season. It is under debate if climate extremes change similarly strong. Our study provides detailed regional information about two selected temperature extreme indices in the Arctic, namely warm and cold spells in winter and summer. We analyze their temporal evolution and variability from 1979–2013, based on daily station data and ERA-Interim reanalysis. Calculated trends from both datasets suggest a widespread decrease of cold spells in winter and summer of up to −4 days/decade, with regional patches where trends are statistically significant throughout the Arctic. Winter trends are spatially heterogeneous, the reanalysis also shows small areas with statistically significant increases of cold spells throughout Siberia. Calculated changes in warm spells from both datasets are mostly small throughout the Arctic (less than ±1 day/decade) and statistically not significant. Remarkable exceptions are the Lena river basin in winter with a statistically significant decrease of up to −1.5 days/decade and areas in Scandinavia with statistically significant increases of up to 2.5 days/decade in winter and summer (again from both datasets). From the analysis of spell lengths, we find that there are no shifts from longer to shorter spells or vice versa with time, but long cold spells (events lasting for more than 15 days) disappear almost completely after the year 2000. There is a distinct inter-annual and decadal variability in the spells, which hinders the detection of significant trends for all spell categories in all regions. |
format |
Article in Journal/Newspaper |
author |
Heidrun Matthes Annette Rinke Klaus Dethloff |
author_facet |
Heidrun Matthes Annette Rinke Klaus Dethloff |
author_sort |
Heidrun Matthes |
title |
Recent changes in Arctic temperature extremes: warm and cold spells during winter and summer |
title_short |
Recent changes in Arctic temperature extremes: warm and cold spells during winter and summer |
title_full |
Recent changes in Arctic temperature extremes: warm and cold spells during winter and summer |
title_fullStr |
Recent changes in Arctic temperature extremes: warm and cold spells during winter and summer |
title_full_unstemmed |
Recent changes in Arctic temperature extremes: warm and cold spells during winter and summer |
title_sort |
recent changes in arctic temperature extremes: warm and cold spells during winter and summer |
publisher |
IOP Publishing |
publishDate |
2015 |
url |
https://doi.org/10.1088/1748-9326/10/11/114020 https://doaj.org/article/b0668281c48342c99290cfccb612ca6a |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change lena river Siberia |
genre_facet |
Arctic Climate change lena river Siberia |
op_source |
Environmental Research Letters, Vol 10, Iss 11, p 114020 (2015) |
op_relation |
https://doi.org/10.1088/1748-9326/10/11/114020 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/10/11/114020 1748-9326 https://doaj.org/article/b0668281c48342c99290cfccb612ca6a |
op_doi |
https://doi.org/10.1088/1748-9326/10/11/114020 |
container_title |
Environmental Research Letters |
container_volume |
10 |
container_issue |
11 |
container_start_page |
114020 |
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1776198054504824832 |