Using NWP to assess the influence of the Arctic atmosphere on mid-latitude weather and climate
The influence of the Arctic atmosphere on Northern Hemisphere mid-latitude tropospheric weather and climate is explored by comparing the skill of two sets of 14-day weather forecast experiments with the ECMWF model with and without relaxation of the Arctic atmosphere towards ERA-Interim reanalysis d...
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European Meteorological Society
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ftawi:oai:epic.awi.de:46081 2023-05-15T14:27:32+02:00 Using NWP to assess the influence of the Arctic atmosphere on mid-latitude weather and climate Semmler, Tido Jung, Thomas Kasper, Marta Serrar, Soumia 2017-09-06 application/pdf https://epic.awi.de/id/eprint/46081/ https://epic.awi.de/id/eprint/46081/1/EMS2017_NWP_Arctic_linkages.pdf https://www.ems2017.eu/programme/how_to_access_the_programme.html https://hdl.handle.net/10013/epic.5c971bbf-1ffa-4b5d-b78a-9f20c644d445 https://hdl.handle.net/ unknown European Meteorological Society https://epic.awi.de/id/eprint/46081/1/EMS2017_NWP_Arctic_linkages.pdf https://hdl.handle.net/ Semmler, T. orcid:0000-0002-2254-4901 , Jung, T. orcid:0000-0002-2651-1293 , Kasper, M. and Serrar, S. (2017) Using NWP to assess the influence of the Arctic atmosphere on mid-latitude weather and climate , EMS Annual Meeting 2017, Dublin, Ireland, 4 September 2017 - 8 September 2017 . hdl:10013/epic.5c971bbf-1ffa-4b5d-b78a-9f20c644d445 EPIC3EMS Annual Meeting 2017, Dublin, Ireland, 2017-09-04-2017-09-08Dublin, Ireland, European Meteorological Society Conference notRev 2017 ftawi 2021-12-24T15:43:31Z The influence of the Arctic atmosphere on Northern Hemisphere mid-latitude tropospheric weather and climate is explored by comparing the skill of two sets of 14-day weather forecast experiments with the ECMWF model with and without relaxation of the Arctic atmosphere towards ERA-Interim reanalysis data during the course of the integration. Two pathways are identified along which the Arctic influences mid-latitude weather, one pronounced one over Asia and Eastern Europe and a secondary one over North America. In general, linkages are found to be strongest (weakest) during boreal winter (summer) when the amplitude of stationary planetary waves over the Northern Hemisphere is strongest (weakest). No discernable Arctic impact is found over the North Atlantic and North Pacific region, which is consistent with predominantly southwesterly flow. An analysis of the flow-dependence of the linkages shows that anomalous northerly flow conditions increase the Arctic influence on mid-latitude weather over the continents. Specifically, an anomalous northerly flow from Kara Sea towards Western Asia leads to cold surface temperature anomalies not only over Western Asia but also over Eastern and Central Europe. Finally, the results of this study are discussed in the light of potential mid-latitude benefits of improved Arctic prediction capabilities. Conference Object Arctic Arctic Kara Sea North Atlantic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Kara Sea Pacific |
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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 influence of the Arctic atmosphere on Northern Hemisphere mid-latitude tropospheric weather and climate is explored by comparing the skill of two sets of 14-day weather forecast experiments with the ECMWF model with and without relaxation of the Arctic atmosphere towards ERA-Interim reanalysis data during the course of the integration. Two pathways are identified along which the Arctic influences mid-latitude weather, one pronounced one over Asia and Eastern Europe and a secondary one over North America. In general, linkages are found to be strongest (weakest) during boreal winter (summer) when the amplitude of stationary planetary waves over the Northern Hemisphere is strongest (weakest). No discernable Arctic impact is found over the North Atlantic and North Pacific region, which is consistent with predominantly southwesterly flow. An analysis of the flow-dependence of the linkages shows that anomalous northerly flow conditions increase the Arctic influence on mid-latitude weather over the continents. Specifically, an anomalous northerly flow from Kara Sea towards Western Asia leads to cold surface temperature anomalies not only over Western Asia but also over Eastern and Central Europe. Finally, the results of this study are discussed in the light of potential mid-latitude benefits of improved Arctic prediction capabilities. |
format |
Conference Object |
author |
Semmler, Tido Jung, Thomas Kasper, Marta Serrar, Soumia |
spellingShingle |
Semmler, Tido Jung, Thomas Kasper, Marta Serrar, Soumia Using NWP to assess the influence of the Arctic atmosphere on mid-latitude weather and climate |
author_facet |
Semmler, Tido Jung, Thomas Kasper, Marta Serrar, Soumia |
author_sort |
Semmler, Tido |
title |
Using NWP to assess the influence of the Arctic atmosphere on mid-latitude weather and climate |
title_short |
Using NWP to assess the influence of the Arctic atmosphere on mid-latitude weather and climate |
title_full |
Using NWP to assess the influence of the Arctic atmosphere on mid-latitude weather and climate |
title_fullStr |
Using NWP to assess the influence of the Arctic atmosphere on mid-latitude weather and climate |
title_full_unstemmed |
Using NWP to assess the influence of the Arctic atmosphere on mid-latitude weather and climate |
title_sort |
using nwp to assess the influence of the arctic atmosphere on mid-latitude weather and climate |
publisher |
European Meteorological Society |
publishDate |
2017 |
url |
https://epic.awi.de/id/eprint/46081/ https://epic.awi.de/id/eprint/46081/1/EMS2017_NWP_Arctic_linkages.pdf https://www.ems2017.eu/programme/how_to_access_the_programme.html https://hdl.handle.net/10013/epic.5c971bbf-1ffa-4b5d-b78a-9f20c644d445 https://hdl.handle.net/ |
geographic |
Arctic Kara Sea Pacific |
geographic_facet |
Arctic Kara Sea Pacific |
genre |
Arctic Arctic Kara Sea North Atlantic |
genre_facet |
Arctic Arctic Kara Sea North Atlantic |
op_source |
EPIC3EMS Annual Meeting 2017, Dublin, Ireland, 2017-09-04-2017-09-08Dublin, Ireland, European Meteorological Society |
op_relation |
https://epic.awi.de/id/eprint/46081/1/EMS2017_NWP_Arctic_linkages.pdf https://hdl.handle.net/ Semmler, T. orcid:0000-0002-2254-4901 , Jung, T. orcid:0000-0002-2651-1293 , Kasper, M. and Serrar, S. (2017) Using NWP to assess the influence of the Arctic atmosphere on mid-latitude weather and climate , EMS Annual Meeting 2017, Dublin, Ireland, 4 September 2017 - 8 September 2017 . hdl:10013/epic.5c971bbf-1ffa-4b5d-b78a-9f20c644d445 |
_version_ |
1766301317841551360 |