Seasonal modes of dryness and wetness variability over Europe and their connections with large scale atmospheric circulation and global sea surface temperature
The relationship between the seasonal modes of interannual variability of a multiscalar drought index over Europe and the large-scale atmospheric circulation and sea surface temperature (SST) anomaly fields is investigated through statistical analysis of observed and reanalysis data. It is shown tha...
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Online Access: | https://epic.awi.de/id/eprint/37328/ https://epic.awi.de/id/eprint/37328/1/Ionita-ClimDynamics.pdf http://link.springer.com/article/10.1007/s00382-015-2508-2 https://hdl.handle.net/10013/epic.45013 https://hdl.handle.net/10013/epic.45013.d001 |
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ftawi:oai:epic.awi.de:37328 2024-09-15T18:23:45+00:00 Seasonal modes of dryness and wetness variability over Europe and their connections with large scale atmospheric circulation and global sea surface temperature Ionita, Monica Boroneant, Constanta Chelcea, Silvia 2015-02-15 application/pdf https://epic.awi.de/id/eprint/37328/ https://epic.awi.de/id/eprint/37328/1/Ionita-ClimDynamics.pdf http://link.springer.com/article/10.1007/s00382-015-2508-2 https://hdl.handle.net/10013/epic.45013 https://hdl.handle.net/10013/epic.45013.d001 unknown SPRINGER https://epic.awi.de/id/eprint/37328/1/Ionita-ClimDynamics.pdf https://hdl.handle.net/10013/epic.45013.d001 Ionita, M. orcid:0000-0001-8240-4380 , Boroneant, C. and Chelcea, S. (2015) Seasonal modes of dryness and wetness variability over Europe and their connections with large scale atmospheric circulation and global sea surface temperature , Climate Dynamics . doi:10.1007/s00382-015-2508-2 <https://doi.org/10.1007/s00382-015-2508-2> , hdl:10013/epic.45013 EPIC3Climate Dynamics, SPRINGER, ISSN: 0930-7575 Article isiRev 2015 ftawi https://doi.org/10.1007/s00382-015-2508-2 2024-06-24T04:11:05Z The relationship between the seasonal modes of interannual variability of a multiscalar drought index over Europe and the large-scale atmospheric circulation and sea surface temperature (SST) anomaly fields is investigated through statistical analysis of observed and reanalysis data. It is shown that the seasonal modes of dryness and wetness variability over Europe and their relationship with the large-scale atmospheric circulation and global SST anomaly fields differ from one season to another. During winter, the dominant modes of dryness and wetness variability are influenced by the Arctic Oscillation (AO)/North Atlantic Oscillation (NAO), the Scandinavian pattern, the East Atlantic pattern and the East Atlantic/Western Russia pattern. The spring dryness/wetness modes are influenced mainly by the AO, Polar/Eurasian patterns and the Atlantic Multidecadal Oscillation conditions. The phases (positive or negative) and the superposition of these large scale variability modes play a significant role in modulating the drought conditions over Europe. During summer, the atmospheric blocking is one of the main drivers of dryness and wetness conditions, while during autumn dryness/wetness conditions variability can be related to the NAO or with a wave train like pattern in the geopotential height at 850mb, which develops over the Atlantic Ocean and extends up to Siberia. It is also found that the response of the dryness and wetness conditions to global SST is more regional in summer, compared to the other seasons, when local processes may play a more important role. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Siberia Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Climate Dynamics 45 9-10 2803 2829 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The relationship between the seasonal modes of interannual variability of a multiscalar drought index over Europe and the large-scale atmospheric circulation and sea surface temperature (SST) anomaly fields is investigated through statistical analysis of observed and reanalysis data. It is shown that the seasonal modes of dryness and wetness variability over Europe and their relationship with the large-scale atmospheric circulation and global SST anomaly fields differ from one season to another. During winter, the dominant modes of dryness and wetness variability are influenced by the Arctic Oscillation (AO)/North Atlantic Oscillation (NAO), the Scandinavian pattern, the East Atlantic pattern and the East Atlantic/Western Russia pattern. The spring dryness/wetness modes are influenced mainly by the AO, Polar/Eurasian patterns and the Atlantic Multidecadal Oscillation conditions. The phases (positive or negative) and the superposition of these large scale variability modes play a significant role in modulating the drought conditions over Europe. During summer, the atmospheric blocking is one of the main drivers of dryness and wetness conditions, while during autumn dryness/wetness conditions variability can be related to the NAO or with a wave train like pattern in the geopotential height at 850mb, which develops over the Atlantic Ocean and extends up to Siberia. It is also found that the response of the dryness and wetness conditions to global SST is more regional in summer, compared to the other seasons, when local processes may play a more important role. |
format |
Article in Journal/Newspaper |
author |
Ionita, Monica Boroneant, Constanta Chelcea, Silvia |
spellingShingle |
Ionita, Monica Boroneant, Constanta Chelcea, Silvia Seasonal modes of dryness and wetness variability over Europe and their connections with large scale atmospheric circulation and global sea surface temperature |
author_facet |
Ionita, Monica Boroneant, Constanta Chelcea, Silvia |
author_sort |
Ionita, Monica |
title |
Seasonal modes of dryness and wetness variability over Europe and their connections with large scale atmospheric circulation and global sea surface temperature |
title_short |
Seasonal modes of dryness and wetness variability over Europe and their connections with large scale atmospheric circulation and global sea surface temperature |
title_full |
Seasonal modes of dryness and wetness variability over Europe and their connections with large scale atmospheric circulation and global sea surface temperature |
title_fullStr |
Seasonal modes of dryness and wetness variability over Europe and their connections with large scale atmospheric circulation and global sea surface temperature |
title_full_unstemmed |
Seasonal modes of dryness and wetness variability over Europe and their connections with large scale atmospheric circulation and global sea surface temperature |
title_sort |
seasonal modes of dryness and wetness variability over europe and their connections with large scale atmospheric circulation and global sea surface temperature |
publisher |
SPRINGER |
publishDate |
2015 |
url |
https://epic.awi.de/id/eprint/37328/ https://epic.awi.de/id/eprint/37328/1/Ionita-ClimDynamics.pdf http://link.springer.com/article/10.1007/s00382-015-2508-2 https://hdl.handle.net/10013/epic.45013 https://hdl.handle.net/10013/epic.45013.d001 |
genre |
North Atlantic North Atlantic oscillation Siberia |
genre_facet |
North Atlantic North Atlantic oscillation Siberia |
op_source |
EPIC3Climate Dynamics, SPRINGER, ISSN: 0930-7575 |
op_relation |
https://epic.awi.de/id/eprint/37328/1/Ionita-ClimDynamics.pdf https://hdl.handle.net/10013/epic.45013.d001 Ionita, M. orcid:0000-0001-8240-4380 , Boroneant, C. and Chelcea, S. (2015) Seasonal modes of dryness and wetness variability over Europe and their connections with large scale atmospheric circulation and global sea surface temperature , Climate Dynamics . doi:10.1007/s00382-015-2508-2 <https://doi.org/10.1007/s00382-015-2508-2> , hdl:10013/epic.45013 |
op_doi |
https://doi.org/10.1007/s00382-015-2508-2 |
container_title |
Climate Dynamics |
container_volume |
45 |
container_issue |
9-10 |
container_start_page |
2803 |
op_container_end_page |
2829 |
_version_ |
1810464011088560128 |