Seasonal co-variability of surface downwelling longwave radiation for the 1982–2009 period in the Arctic
Trends and variability of the Arctic sea ice extent depend on various physical processes, including those related to changes in radiative fluxes, which are associated with cloudiness and water vapour and, in turn, with the atmospheric moisture transport over the Arctic. Aim of this work was: (i) to...
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ftcopernicus:oai:publications.copernicus.org:asr56793 2023-05-15T14:46:38+02:00 Seasonal co-variability of surface downwelling longwave radiation for the 1982–2009 period in the Arctic Boccolari, Mauro Parmiggiani, Flavio 2018-02-02 application/pdf https://doi.org/10.5194/asr-14-139-2017 https://asr.copernicus.org/articles/14/139/2017/ eng eng doi:10.5194/asr-14-139-2017 https://asr.copernicus.org/articles/14/139/2017/ eISSN: 1992-0636 Text 2018 ftcopernicus https://doi.org/10.5194/asr-14-139-2017 2020-07-20T16:23:43Z Trends and variability of the Arctic sea ice extent depend on various physical processes, including those related to changes in radiative fluxes, which are associated with cloudiness and water vapour and, in turn, with the atmospheric moisture transport over the Arctic. Aim of this work was: (i) to extract seasonal spatial patterns of the co-variability between the sea ice concentration (SIC) and the surface downwelling longwave radiation (SDL) in the Arctic Ocean during the 1982–2009 period; and (ii) to estimate the correlation coefficients between these patterns and the indices associated to some climate oscillation modes (AO, NAO, PNA, PDO and AMO). Maximum Covariance Analysis (MCA) was the main technique used in this study. Among our results, we highlight two areas of maximum co-variability SIC/SDL centered over the Barents Sea in winter and over the Chukchi Sea in summer. In addition, some statistically significant correlations (at 95 %) between the spatial patterns of co-variability and climate oscillation indices were assessed, e.g. with PDO and AMO in November–January, with NAO and AMO in May–July, and with PNA in August–October. Text Arctic Arctic Ocean Barents Sea Chukchi Chukchi Sea Sea ice Copernicus Publications: E-Journals Arctic Arctic Ocean Barents Sea Chukchi Sea Advances in Science and Research 14 139 143 |
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Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
Trends and variability of the Arctic sea ice extent depend on various physical processes, including those related to changes in radiative fluxes, which are associated with cloudiness and water vapour and, in turn, with the atmospheric moisture transport over the Arctic. Aim of this work was: (i) to extract seasonal spatial patterns of the co-variability between the sea ice concentration (SIC) and the surface downwelling longwave radiation (SDL) in the Arctic Ocean during the 1982–2009 period; and (ii) to estimate the correlation coefficients between these patterns and the indices associated to some climate oscillation modes (AO, NAO, PNA, PDO and AMO). Maximum Covariance Analysis (MCA) was the main technique used in this study. Among our results, we highlight two areas of maximum co-variability SIC/SDL centered over the Barents Sea in winter and over the Chukchi Sea in summer. In addition, some statistically significant correlations (at 95 %) between the spatial patterns of co-variability and climate oscillation indices were assessed, e.g. with PDO and AMO in November–January, with NAO and AMO in May–July, and with PNA in August–October. |
format |
Text |
author |
Boccolari, Mauro Parmiggiani, Flavio |
spellingShingle |
Boccolari, Mauro Parmiggiani, Flavio Seasonal co-variability of surface downwelling longwave radiation for the 1982–2009 period in the Arctic |
author_facet |
Boccolari, Mauro Parmiggiani, Flavio |
author_sort |
Boccolari, Mauro |
title |
Seasonal co-variability of surface downwelling longwave radiation for the 1982–2009 period in the Arctic |
title_short |
Seasonal co-variability of surface downwelling longwave radiation for the 1982–2009 period in the Arctic |
title_full |
Seasonal co-variability of surface downwelling longwave radiation for the 1982–2009 period in the Arctic |
title_fullStr |
Seasonal co-variability of surface downwelling longwave radiation for the 1982–2009 period in the Arctic |
title_full_unstemmed |
Seasonal co-variability of surface downwelling longwave radiation for the 1982–2009 period in the Arctic |
title_sort |
seasonal co-variability of surface downwelling longwave radiation for the 1982–2009 period in the arctic |
publishDate |
2018 |
url |
https://doi.org/10.5194/asr-14-139-2017 https://asr.copernicus.org/articles/14/139/2017/ |
geographic |
Arctic Arctic Ocean Barents Sea Chukchi Sea |
geographic_facet |
Arctic Arctic Ocean Barents Sea Chukchi Sea |
genre |
Arctic Arctic Ocean Barents Sea Chukchi Chukchi Sea Sea ice |
genre_facet |
Arctic Arctic Ocean Barents Sea Chukchi Chukchi Sea Sea ice |
op_source |
eISSN: 1992-0636 |
op_relation |
doi:10.5194/asr-14-139-2017 https://asr.copernicus.org/articles/14/139/2017/ |
op_doi |
https://doi.org/10.5194/asr-14-139-2017 |
container_title |
Advances in Science and Research |
container_volume |
14 |
container_start_page |
139 |
op_container_end_page |
143 |
_version_ |
1766317845892825088 |