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Case Study and Climatological Analysis of Upper-Tropospheric Jet Stream and Stratosphere–Troposphere Exchanges Using VHF Profilers and Radionuclide Measurements in France
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| Zeitschriftentitel: | Journal of Applied Meteorology and Climatology |
|---|---|
| Personen und Körperschaften: | , , , , , , , , , , , , , |
| In: | Journal of Applied Meteorology and Climatology, 56, 2017, 11, S. 3081-3097 |
| Format: | E-Article |
| Sprache: | Unbestimmt |
| veröffentlicht: |
American Meteorological Society
|
| Schlagwörter: |
| author_facet |
Baray, Jean-Luc Pointin, Yves Van Baelen, Joël Lothon, Marie Campistron, Bernard Cammas, Jean-Pierre Masson, Olivier Colomb, Aurélie Hervier, Claude Bezombes, Yannick Banson, Sandra Duroure, Christophe Hadad, Dany Tridon, Frédéric Baray, Jean-Luc Pointin, Yves Van Baelen, Joël Lothon, Marie Campistron, Bernard Cammas, Jean-Pierre Masson, Olivier Colomb, Aurélie Hervier, Claude Bezombes, Yannick Banson, Sandra Duroure, Christophe Hadad, Dany Tridon, Frédéric |
|---|---|
| author |
Baray, Jean-Luc Pointin, Yves Van Baelen, Joël Lothon, Marie Campistron, Bernard Cammas, Jean-Pierre Masson, Olivier Colomb, Aurélie Hervier, Claude Bezombes, Yannick Banson, Sandra Duroure, Christophe Hadad, Dany Tridon, Frédéric |
| spellingShingle |
Baray, Jean-Luc Pointin, Yves Van Baelen, Joël Lothon, Marie Campistron, Bernard Cammas, Jean-Pierre Masson, Olivier Colomb, Aurélie Hervier, Claude Bezombes, Yannick Banson, Sandra Duroure, Christophe Hadad, Dany Tridon, Frédéric Journal of Applied Meteorology and Climatology Case Study and Climatological Analysis of Upper-Tropospheric Jet Stream and Stratosphere–Troposphere Exchanges Using VHF Profilers and Radionuclide Measurements in France Atmospheric Science |
| author_sort |
baray, jean-luc |
| spelling |
Baray, Jean-Luc Pointin, Yves Van Baelen, Joël Lothon, Marie Campistron, Bernard Cammas, Jean-Pierre Masson, Olivier Colomb, Aurélie Hervier, Claude Bezombes, Yannick Banson, Sandra Duroure, Christophe Hadad, Dany Tridon, Frédéric 1558-8424 1558-8432 American Meteorological Society Atmospheric Science http://dx.doi.org/10.1175/jamc-d-16-0353.1 <jats:title>Abstract</jats:title><jats:p>The authors present a climatological analysis of tropospheric horizontal wind profiles and jet stream events using long series of wind profiles from two VHF profilers located in France: Lannemezan (2001–14) and Opme (1999–2014). A case study of jet stream and stratospheric intrusion of air into the troposphere that occurred in January 2013 is first described and demonstrates the capability of the VHF profilers to detect jet stream events. The climatology study over the two sites reveals the strongest values of seasonal wind during winter (21.4 m s<jats:sup>−1</jats:sup>at 8.7-km height at Opme; 25.1 m s<jats:sup>−1</jats:sup>at 9.6-km height at Lannemezan). A methodology based on the automatic detection of maximum winds on a decadal series of hourly wind profiles allows the detection of jet stream events and establishes its climatology for each site. A frequency analysis of jet stream events of westerly winds over 50 m s<jats:sup>−1</jats:sup>presents a clear seasonality at the two sites, with a maximum in winter (3.5%–9.7% of hourly profiles) and a minimum in summer (near 1%). Cosmogenic radionuclides sampled at Opme also exhibit a clear seasonal variation with maximum in spring and minimum in the cold seasons; the<jats:sup>7</jats:sup>Be/<jats:sup>22</jats:sup>Na activity ratio confirms stratosphere-to-troposphere exchanges for the studied cases. The mean interannual variability of the frequency of jet stream events is 1.5% in Opme and 2.9% in Lannemezan. Positive decadal trends are observed for the two sites: +1.6 ± 1.2% decade<jats:sup>−1</jats:sup>for Opme and +2.4 ± 2.2% decade<jats:sup>−1</jats:sup>for Lannemezan.</jats:p> Case Study and Climatological Analysis of Upper-Tropospheric Jet Stream and Stratosphere–Troposphere Exchanges Using VHF Profilers and Radionuclide Measurements in France Journal of Applied Meteorology and Climatology |
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Journal of Applied Meteorology and Climatology |
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| title |
Case Study and Climatological Analysis of Upper-Tropospheric Jet Stream and Stratosphere–Troposphere Exchanges Using VHF Profilers and Radionuclide Measurements in France |
| title_unstemmed |
Case Study and Climatological Analysis of Upper-Tropospheric Jet Stream and Stratosphere–Troposphere Exchanges Using VHF Profilers and Radionuclide Measurements in France |
| title_full |
Case Study and Climatological Analysis of Upper-Tropospheric Jet Stream and Stratosphere–Troposphere Exchanges Using VHF Profilers and Radionuclide Measurements in France |
| title_fullStr |
Case Study and Climatological Analysis of Upper-Tropospheric Jet Stream and Stratosphere–Troposphere Exchanges Using VHF Profilers and Radionuclide Measurements in France |
| title_full_unstemmed |
Case Study and Climatological Analysis of Upper-Tropospheric Jet Stream and Stratosphere–Troposphere Exchanges Using VHF Profilers and Radionuclide Measurements in France |
| title_short |
Case Study and Climatological Analysis of Upper-Tropospheric Jet Stream and Stratosphere–Troposphere Exchanges Using VHF Profilers and Radionuclide Measurements in France |
| title_sort |
case study and climatological analysis of upper-tropospheric jet stream and stratosphere–troposphere exchanges using vhf profilers and radionuclide measurements in france |
| topic |
Atmospheric Science |
| url |
http://dx.doi.org/10.1175/jamc-d-16-0353.1 |
| publishDate |
2017 |
| physical |
3081-3097 |
| description |
<jats:title>Abstract</jats:title><jats:p>The authors present a climatological analysis of tropospheric horizontal wind profiles and jet stream events using long series of wind profiles from two VHF profilers located in France: Lannemezan (2001–14) and Opme (1999–2014). A case study of jet stream and stratospheric intrusion of air into the troposphere that occurred in January 2013 is first described and demonstrates the capability of the VHF profilers to detect jet stream events. The climatology study over the two sites reveals the strongest values of seasonal wind during winter (21.4 m s<jats:sup>−1</jats:sup>at 8.7-km height at Opme; 25.1 m s<jats:sup>−1</jats:sup>at 9.6-km height at Lannemezan). A methodology based on the automatic detection of maximum winds on a decadal series of hourly wind profiles allows the detection of jet stream events and establishes its climatology for each site. A frequency analysis of jet stream events of westerly winds over 50 m s<jats:sup>−1</jats:sup>presents a clear seasonality at the two sites, with a maximum in winter (3.5%–9.7% of hourly profiles) and a minimum in summer (near 1%). Cosmogenic radionuclides sampled at Opme also exhibit a clear seasonal variation with maximum in spring and minimum in the cold seasons; the<jats:sup>7</jats:sup>Be/<jats:sup>22</jats:sup>Na activity ratio confirms stratosphere-to-troposphere exchanges for the studied cases. The mean interannual variability of the frequency of jet stream events is 1.5% in Opme and 2.9% in Lannemezan. Positive decadal trends are observed for the two sites: +1.6 ± 1.2% decade<jats:sup>−1</jats:sup>for Opme and +2.4 ± 2.2% decade<jats:sup>−1</jats:sup>for Lannemezan.</jats:p> |
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| author_facet | Baray, Jean-Luc, Pointin, Yves, Van Baelen, Joël, Lothon, Marie, Campistron, Bernard, Cammas, Jean-Pierre, Masson, Olivier, Colomb, Aurélie, Hervier, Claude, Bezombes, Yannick, Banson, Sandra, Duroure, Christophe, Hadad, Dany, Tridon, Frédéric, Baray, Jean-Luc, Pointin, Yves, Van Baelen, Joël, Lothon, Marie, Campistron, Bernard, Cammas, Jean-Pierre, Masson, Olivier, Colomb, Aurélie, Hervier, Claude, Bezombes, Yannick, Banson, Sandra, Duroure, Christophe, Hadad, Dany, Tridon, Frédéric |
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| description | <jats:title>Abstract</jats:title><jats:p>The authors present a climatological analysis of tropospheric horizontal wind profiles and jet stream events using long series of wind profiles from two VHF profilers located in France: Lannemezan (2001–14) and Opme (1999–2014). A case study of jet stream and stratospheric intrusion of air into the troposphere that occurred in January 2013 is first described and demonstrates the capability of the VHF profilers to detect jet stream events. The climatology study over the two sites reveals the strongest values of seasonal wind during winter (21.4 m s<jats:sup>−1</jats:sup>at 8.7-km height at Opme; 25.1 m s<jats:sup>−1</jats:sup>at 9.6-km height at Lannemezan). A methodology based on the automatic detection of maximum winds on a decadal series of hourly wind profiles allows the detection of jet stream events and establishes its climatology for each site. A frequency analysis of jet stream events of westerly winds over 50 m s<jats:sup>−1</jats:sup>presents a clear seasonality at the two sites, with a maximum in winter (3.5%–9.7% of hourly profiles) and a minimum in summer (near 1%). Cosmogenic radionuclides sampled at Opme also exhibit a clear seasonal variation with maximum in spring and minimum in the cold seasons; the<jats:sup>7</jats:sup>Be/<jats:sup>22</jats:sup>Na activity ratio confirms stratosphere-to-troposphere exchanges for the studied cases. The mean interannual variability of the frequency of jet stream events is 1.5% in Opme and 2.9% in Lannemezan. Positive decadal trends are observed for the two sites: +1.6 ± 1.2% decade<jats:sup>−1</jats:sup>for Opme and +2.4 ± 2.2% decade<jats:sup>−1</jats:sup>for Lannemezan.</jats:p> |
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| spelling | Baray, Jean-Luc Pointin, Yves Van Baelen, Joël Lothon, Marie Campistron, Bernard Cammas, Jean-Pierre Masson, Olivier Colomb, Aurélie Hervier, Claude Bezombes, Yannick Banson, Sandra Duroure, Christophe Hadad, Dany Tridon, Frédéric 1558-8424 1558-8432 American Meteorological Society Atmospheric Science http://dx.doi.org/10.1175/jamc-d-16-0353.1 <jats:title>Abstract</jats:title><jats:p>The authors present a climatological analysis of tropospheric horizontal wind profiles and jet stream events using long series of wind profiles from two VHF profilers located in France: Lannemezan (2001–14) and Opme (1999–2014). A case study of jet stream and stratospheric intrusion of air into the troposphere that occurred in January 2013 is first described and demonstrates the capability of the VHF profilers to detect jet stream events. The climatology study over the two sites reveals the strongest values of seasonal wind during winter (21.4 m s<jats:sup>−1</jats:sup>at 8.7-km height at Opme; 25.1 m s<jats:sup>−1</jats:sup>at 9.6-km height at Lannemezan). A methodology based on the automatic detection of maximum winds on a decadal series of hourly wind profiles allows the detection of jet stream events and establishes its climatology for each site. A frequency analysis of jet stream events of westerly winds over 50 m s<jats:sup>−1</jats:sup>presents a clear seasonality at the two sites, with a maximum in winter (3.5%–9.7% of hourly profiles) and a minimum in summer (near 1%). Cosmogenic radionuclides sampled at Opme also exhibit a clear seasonal variation with maximum in spring and minimum in the cold seasons; the<jats:sup>7</jats:sup>Be/<jats:sup>22</jats:sup>Na activity ratio confirms stratosphere-to-troposphere exchanges for the studied cases. The mean interannual variability of the frequency of jet stream events is 1.5% in Opme and 2.9% in Lannemezan. Positive decadal trends are observed for the two sites: +1.6 ± 1.2% decade<jats:sup>−1</jats:sup>for Opme and +2.4 ± 2.2% decade<jats:sup>−1</jats:sup>for Lannemezan.</jats:p> Case Study and Climatological Analysis of Upper-Tropospheric Jet Stream and Stratosphere–Troposphere Exchanges Using VHF Profilers and Radionuclide Measurements in France Journal of Applied Meteorology and Climatology |
| spellingShingle | Baray, Jean-Luc, Pointin, Yves, Van Baelen, Joël, Lothon, Marie, Campistron, Bernard, Cammas, Jean-Pierre, Masson, Olivier, Colomb, Aurélie, Hervier, Claude, Bezombes, Yannick, Banson, Sandra, Duroure, Christophe, Hadad, Dany, Tridon, Frédéric, Journal of Applied Meteorology and Climatology, Case Study and Climatological Analysis of Upper-Tropospheric Jet Stream and Stratosphere–Troposphere Exchanges Using VHF Profilers and Radionuclide Measurements in France, Atmospheric Science |
| title | Case Study and Climatological Analysis of Upper-Tropospheric Jet Stream and Stratosphere–Troposphere Exchanges Using VHF Profilers and Radionuclide Measurements in France |
| title_full | Case Study and Climatological Analysis of Upper-Tropospheric Jet Stream and Stratosphere–Troposphere Exchanges Using VHF Profilers and Radionuclide Measurements in France |
| title_fullStr | Case Study and Climatological Analysis of Upper-Tropospheric Jet Stream and Stratosphere–Troposphere Exchanges Using VHF Profilers and Radionuclide Measurements in France |
| title_full_unstemmed | Case Study and Climatological Analysis of Upper-Tropospheric Jet Stream and Stratosphere–Troposphere Exchanges Using VHF Profilers and Radionuclide Measurements in France |
| title_short | Case Study and Climatological Analysis of Upper-Tropospheric Jet Stream and Stratosphere–Troposphere Exchanges Using VHF Profilers and Radionuclide Measurements in France |
| title_sort | case study and climatological analysis of upper-tropospheric jet stream and stratosphere–troposphere exchanges using vhf profilers and radionuclide measurements in france |
| title_unstemmed | Case Study and Climatological Analysis of Upper-Tropospheric Jet Stream and Stratosphere–Troposphere Exchanges Using VHF Profilers and Radionuclide Measurements in France |
| topic | Atmospheric Science |
| url | http://dx.doi.org/10.1175/jamc-d-16-0353.1 |