Temperature and precipitation during winter in NyÅlesund, Svalbard and possible tropical linkages
Winter (DJF) temperature and precipitation variability in an Arctic Archipelago, Svalbard is investigated for an extreme event during December 2015 as well as on interannual time scales. During December 2015–16, a strong high pressure anomaly over northern Europe channelised warm and moist air into...
Published in: | Tellus A: Dynamic Meteorology and Oceanography |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Stockholm University Press
2020
|
Subjects: | |
Online Access: | https://doi.org/10.1080/16000870.2020.1746604 https://doaj.org/article/ac224ef0763443409cc4c86903b79843 |
id |
ftdoajarticles:oai:doaj.org/article:ac224ef0763443409cc4c86903b79843 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:ac224ef0763443409cc4c86903b79843 2023-05-15T14:28:59+02:00 Temperature and precipitation during winter in NyÅlesund, Svalbard and possible tropical linkages M. Nuncio Sourav Chatterjee K. Satheesan Sheeba Nettukandy Chenoli Subeesh M.P. 2020-01-01T00:00:00Z https://doi.org/10.1080/16000870.2020.1746604 https://doaj.org/article/ac224ef0763443409cc4c86903b79843 EN eng Stockholm University Press http://dx.doi.org/10.1080/16000870.2020.1746604 https://doaj.org/toc/1600-0870 1600-0870 doi:10.1080/16000870.2020.1746604 https://doaj.org/article/ac224ef0763443409cc4c86903b79843 Tellus: Series A, Dynamic Meteorology and Oceanography, Vol 72, Iss 1, Pp 1-15 (2020) arctic temperature arctic precipitation svalbard enso mjo Oceanography GC1-1581 Meteorology. Climatology QC851-999 article 2020 ftdoajarticles https://doi.org/10.1080/16000870.2020.1746604 2022-12-30T23:54:53Z Winter (DJF) temperature and precipitation variability in an Arctic Archipelago, Svalbard is investigated for an extreme event during December 2015 as well as on interannual time scales. During December 2015–16, a strong high pressure anomaly over northern Europe channelised warm and moist air into Ny Ålesund (∼79°N and ∼11°E) resulting in extreme temperature and precipitation. This high pressure anomaly was a result of wave trains associated with the Madden Julian Oscillation (MJO). On interannual time scales, the observation site, Ny Ålesund was characterised by an increasing trend in precipitation and temperature. A composite of SLP anomalies associated with the temperature and precipitation anomalies was characterised by a high pressure anomaly over northern Europe. The second mode in the EOF of SLP anomalies during winter (DJF) also indicated the presence of a high pressure anomaly over northern Europe, extending into the Pacific. The mode was correlated significantly with the ENSO. During the study period, more than 50% of the ENSO events influenced temperature and precipitation in Ny Alesund. In the present study, the EOF-2 temporal pattern correlated strongly with La Nina in the Pacific, suggesting the generation of a high/low pressure anomaly during negative/positive ENSO phases. On interannual timescales, extremes were conspicuous, particularly when La Nina coincided with active MJO. This may be due to the fact that both processes generate similar pressure anomalies in northern Europe and reinforce each other. This study also suggests that the influence of El Nino is weaker than La Nina. It is also noted that decadal oscillations in the Pacific, particularly the Interdecadal Pacific Oscillation (IPO) also enhance the high-pressure anomalies over northern Europe. Thus, the temperature and precipitation in a high Arctic location, Ny Ålesund is interconnected, at least hemispherically and is defined by processes of different time scales. Article in Journal/Newspaper Arctic Archipelago Arctic Ny Ålesund Ny-Ålesund Svalbard Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Ny-Ålesund Pacific Tellus A: Dynamic Meteorology and Oceanography 72 1 1 15 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
arctic temperature arctic precipitation svalbard enso mjo Oceanography GC1-1581 Meteorology. Climatology QC851-999 |
spellingShingle |
arctic temperature arctic precipitation svalbard enso mjo Oceanography GC1-1581 Meteorology. Climatology QC851-999 M. Nuncio Sourav Chatterjee K. Satheesan Sheeba Nettukandy Chenoli Subeesh M.P. Temperature and precipitation during winter in NyÅlesund, Svalbard and possible tropical linkages |
topic_facet |
arctic temperature arctic precipitation svalbard enso mjo Oceanography GC1-1581 Meteorology. Climatology QC851-999 |
description |
Winter (DJF) temperature and precipitation variability in an Arctic Archipelago, Svalbard is investigated for an extreme event during December 2015 as well as on interannual time scales. During December 2015–16, a strong high pressure anomaly over northern Europe channelised warm and moist air into Ny Ålesund (∼79°N and ∼11°E) resulting in extreme temperature and precipitation. This high pressure anomaly was a result of wave trains associated with the Madden Julian Oscillation (MJO). On interannual time scales, the observation site, Ny Ålesund was characterised by an increasing trend in precipitation and temperature. A composite of SLP anomalies associated with the temperature and precipitation anomalies was characterised by a high pressure anomaly over northern Europe. The second mode in the EOF of SLP anomalies during winter (DJF) also indicated the presence of a high pressure anomaly over northern Europe, extending into the Pacific. The mode was correlated significantly with the ENSO. During the study period, more than 50% of the ENSO events influenced temperature and precipitation in Ny Alesund. In the present study, the EOF-2 temporal pattern correlated strongly with La Nina in the Pacific, suggesting the generation of a high/low pressure anomaly during negative/positive ENSO phases. On interannual timescales, extremes were conspicuous, particularly when La Nina coincided with active MJO. This may be due to the fact that both processes generate similar pressure anomalies in northern Europe and reinforce each other. This study also suggests that the influence of El Nino is weaker than La Nina. It is also noted that decadal oscillations in the Pacific, particularly the Interdecadal Pacific Oscillation (IPO) also enhance the high-pressure anomalies over northern Europe. Thus, the temperature and precipitation in a high Arctic location, Ny Ålesund is interconnected, at least hemispherically and is defined by processes of different time scales. |
format |
Article in Journal/Newspaper |
author |
M. Nuncio Sourav Chatterjee K. Satheesan Sheeba Nettukandy Chenoli Subeesh M.P. |
author_facet |
M. Nuncio Sourav Chatterjee K. Satheesan Sheeba Nettukandy Chenoli Subeesh M.P. |
author_sort |
M. Nuncio |
title |
Temperature and precipitation during winter in NyÅlesund, Svalbard and possible tropical linkages |
title_short |
Temperature and precipitation during winter in NyÅlesund, Svalbard and possible tropical linkages |
title_full |
Temperature and precipitation during winter in NyÅlesund, Svalbard and possible tropical linkages |
title_fullStr |
Temperature and precipitation during winter in NyÅlesund, Svalbard and possible tropical linkages |
title_full_unstemmed |
Temperature and precipitation during winter in NyÅlesund, Svalbard and possible tropical linkages |
title_sort |
temperature and precipitation during winter in nyålesund, svalbard and possible tropical linkages |
publisher |
Stockholm University Press |
publishDate |
2020 |
url |
https://doi.org/10.1080/16000870.2020.1746604 https://doaj.org/article/ac224ef0763443409cc4c86903b79843 |
geographic |
Arctic Svalbard Ny-Ålesund Pacific |
geographic_facet |
Arctic Svalbard Ny-Ålesund Pacific |
genre |
Arctic Archipelago Arctic Ny Ålesund Ny-Ålesund Svalbard |
genre_facet |
Arctic Archipelago Arctic Ny Ålesund Ny-Ålesund Svalbard |
op_source |
Tellus: Series A, Dynamic Meteorology and Oceanography, Vol 72, Iss 1, Pp 1-15 (2020) |
op_relation |
http://dx.doi.org/10.1080/16000870.2020.1746604 https://doaj.org/toc/1600-0870 1600-0870 doi:10.1080/16000870.2020.1746604 https://doaj.org/article/ac224ef0763443409cc4c86903b79843 |
op_doi |
https://doi.org/10.1080/16000870.2020.1746604 |
container_title |
Tellus A: Dynamic Meteorology and Oceanography |
container_volume |
72 |
container_issue |
1 |
container_start_page |
1 |
op_container_end_page |
15 |
_version_ |
1766303097585401856 |