Wintertime Atmospheric Blocking Events over Western Siberia in the Period 2004–2016 and Their Influence on the Surface Temperature Anomalies
We study wintertime blocking events in 2004–2016 over Western Siberia (WS) and their influence on the surface temperature. The period 2004–2016 is very interesting for study because there has been an increase in the blocking frequency over WS beginning with 2004. We used data ECMWF ERA-Interim and b...
Published in: | Proceedings of the 2nd International Electronic Conference on Atmospheric Sciences |
---|---|
Main Authors: | , , , |
Format: | Text |
Language: | English |
Published: |
Multidisciplinary Digital Publishing Institute
2017
|
Subjects: | |
Online Access: | https://doi.org/10.3390/ecas2017-04127 |
id |
ftmdpi:oai:mdpi.com:/2504-3900/1/5/198/ |
---|---|
record_format |
openpolar |
spelling |
ftmdpi:oai:mdpi.com:/2504-3900/1/5/198/ 2023-08-20T04:04:42+02:00 Wintertime Atmospheric Blocking Events over Western Siberia in the Period 2004–2016 and Their Influence on the Surface Temperature Anomalies Olga Yu. Antokhina Pavel N. Antokhin Elena V. Devyatova Yulia V. Martynova 2017-07-17 application/pdf https://doi.org/10.3390/ecas2017-04127 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/ecas2017-04127 https://creativecommons.org/licenses/by/4.0/ Proceedings; Volume 1; Issue 5; Pages: 198 atmospheric blocking wintertime circulation surface temperature anomaly cold winter Text 2017 ftmdpi https://doi.org/10.3390/ecas2017-04127 2023-07-31T21:14:24Z We study wintertime blocking events in 2004–2016 over Western Siberia (WS) and their influence on the surface temperature. The period 2004–2016 is very interesting for study because there has been an increase in the blocking frequency over WS beginning with 2004. We used data ECMWF ERA-Interim and blocking criterion proposed by Tibaldi and Molteni. We investigated blockings events with duration of 5 days or more for winter interval (1 November–31 March). We have chosen 15 blockings events. For each event we calculate surface temperature anomaly in the grid points for two sectors 60–90 E; 50–60 N (southern part of WS) and 60–90 E; 60–70 N (northern part of WS). To estimate advective transfer for studied events we analyzed the potential temperature on the dynamical tropopause. We showed that wintertime blocking events over WS lead to the surface temperature increase in the northern part of West Siberia and to the surface temperature decrease in the southern part of WS. This feature apparently due to warm air masses advection from south-west on the western periphery of the blocking ridge and arctic air masses intrusion to the southern part of the WS on the eastern periphery of this ridge. Text Arctic Siberia MDPI Open Access Publishing Arctic Proceedings of the 2nd International Electronic Conference on Atmospheric Sciences 198 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
atmospheric blocking wintertime circulation surface temperature anomaly cold winter |
spellingShingle |
atmospheric blocking wintertime circulation surface temperature anomaly cold winter Olga Yu. Antokhina Pavel N. Antokhin Elena V. Devyatova Yulia V. Martynova Wintertime Atmospheric Blocking Events over Western Siberia in the Period 2004–2016 and Their Influence on the Surface Temperature Anomalies |
topic_facet |
atmospheric blocking wintertime circulation surface temperature anomaly cold winter |
description |
We study wintertime blocking events in 2004–2016 over Western Siberia (WS) and their influence on the surface temperature. The period 2004–2016 is very interesting for study because there has been an increase in the blocking frequency over WS beginning with 2004. We used data ECMWF ERA-Interim and blocking criterion proposed by Tibaldi and Molteni. We investigated blockings events with duration of 5 days or more for winter interval (1 November–31 March). We have chosen 15 blockings events. For each event we calculate surface temperature anomaly in the grid points for two sectors 60–90 E; 50–60 N (southern part of WS) and 60–90 E; 60–70 N (northern part of WS). To estimate advective transfer for studied events we analyzed the potential temperature on the dynamical tropopause. We showed that wintertime blocking events over WS lead to the surface temperature increase in the northern part of West Siberia and to the surface temperature decrease in the southern part of WS. This feature apparently due to warm air masses advection from south-west on the western periphery of the blocking ridge and arctic air masses intrusion to the southern part of the WS on the eastern periphery of this ridge. |
format |
Text |
author |
Olga Yu. Antokhina Pavel N. Antokhin Elena V. Devyatova Yulia V. Martynova |
author_facet |
Olga Yu. Antokhina Pavel N. Antokhin Elena V. Devyatova Yulia V. Martynova |
author_sort |
Olga Yu. Antokhina |
title |
Wintertime Atmospheric Blocking Events over Western Siberia in the Period 2004–2016 and Their Influence on the Surface Temperature Anomalies |
title_short |
Wintertime Atmospheric Blocking Events over Western Siberia in the Period 2004–2016 and Their Influence on the Surface Temperature Anomalies |
title_full |
Wintertime Atmospheric Blocking Events over Western Siberia in the Period 2004–2016 and Their Influence on the Surface Temperature Anomalies |
title_fullStr |
Wintertime Atmospheric Blocking Events over Western Siberia in the Period 2004–2016 and Their Influence on the Surface Temperature Anomalies |
title_full_unstemmed |
Wintertime Atmospheric Blocking Events over Western Siberia in the Period 2004–2016 and Their Influence on the Surface Temperature Anomalies |
title_sort |
wintertime atmospheric blocking events over western siberia in the period 2004–2016 and their influence on the surface temperature anomalies |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2017 |
url |
https://doi.org/10.3390/ecas2017-04127 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Siberia |
genre_facet |
Arctic Siberia |
op_source |
Proceedings; Volume 1; Issue 5; Pages: 198 |
op_relation |
https://dx.doi.org/10.3390/ecas2017-04127 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/ecas2017-04127 |
container_title |
Proceedings of the 2nd International Electronic Conference on Atmospheric Sciences |
container_start_page |
198 |
_version_ |
1774715080974270464 |