The Origin of Western European Warm-Season Prefrontal Convergence Lines
The authors investigate the origin of prefrontal, warm-season convergence lines over western Europe using the Weather Research and Forecasting Model. These lines form east of the cold front in the warm sector of an extratropical cyclone, and they are frequently the focus for convective development....
Gespeichert in:
| Veröffentlicht in: | Weather and forecasting 2016-10, Vol.31 (5), p.1417-1431 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 1431 |
|---|---|
| container_issue | 5 |
| container_start_page | 1417 |
| container_title | Weather and forecasting |
| container_volume | 31 |
| creator | Dahl, Johannes M. L. Fischer, Jannick |
| description | The authors investigate the origin of prefrontal, warm-season convergence lines over western Europe using the Weather Research and Forecasting Model. These lines form east of the cold front in the warm sector of an extratropical cyclone, and they are frequently the focus for convective development. It is shown that these lines are related to a low-level thermal ridge that accompanies the base of an elevated mixed layer (EML) plume generated over the Iberian Peninsula and northern Africa. Using Q-vector diagnostics, including the components that describe scalar and rotational quasigeostrophic frontogenesis, it is shown that the convergence line is associated with the rearrangement of the isentropes especially at the western periphery of the EML plume. The ascending branch of the resulting ageostrophic circulation coincides with the surface velocity convergence. The modeling results are supported by a 3-yr composite analysis of cold fronts with and without preceding convergence lines using NCEP-NCAR Reanalysis-1 data. |
| doi_str_mv | 10.1175/WAF-D-15-0161.1 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1846405402</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1924916035</sourcerecordid><originalsourceid>FETCH-LOGICAL-c413t-b4c6b5f8039a81223cecbb70ad9fa49b4c937397de763c570a96056f9050c2683</originalsourceid><addsrcrecordid>eNpdkEtLAzEUhYMoWKtrtwNu3KS9N6-ZLEtfCoUKVroMaZqpU9qkJq3gv3dKXbm6i_NxOPcj5BGhh1jK_nIwoSOKkgIq7OEV6aBkQEFwcU06UFWMVijVLbnLeQsATDLdIdPFpy_mqdk0oYh1sfT56FMoxqcUD96GYmnTnr57m2Mo3pKvUwxHuyuGMXz7tPHB-WLWBJ_vyU1td9k__N0u-ZiMF8MXOptPX4eDGXUC-ZGuhFMrWVfAta2QMe68W61KsGtdW6HbWPOS63LtS8WdbAOtQKpagwTHVMW75PnSe0jx69SuNfsmO7_b2eDjKRushBIgBbAWffqHbuMphXadQc2ERgVctlT_QrkUc24_NIfU7G36MQjmLNa0Ys3IoDRnsQb5L0xiaaU</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1924916035</pqid></control><display><type>article</type><title>The Origin of Western European Warm-Season Prefrontal Convergence Lines</title><source>American Meteorological Society</source><source>Alma/SFX Local Collection</source><source>EZB Electronic Journals Library</source><creator>Dahl, Johannes M. L. ; Fischer, Jannick</creator><creatorcontrib>Dahl, Johannes M. L. ; Fischer, Jannick</creatorcontrib><description>The authors investigate the origin of prefrontal, warm-season convergence lines over western Europe using the Weather Research and Forecasting Model. These lines form east of the cold front in the warm sector of an extratropical cyclone, and they are frequently the focus for convective development. It is shown that these lines are related to a low-level thermal ridge that accompanies the base of an elevated mixed layer (EML) plume generated over the Iberian Peninsula and northern Africa. Using Q-vector diagnostics, including the components that describe scalar and rotational quasigeostrophic frontogenesis, it is shown that the convergence line is associated with the rearrangement of the isentropes especially at the western periphery of the EML plume. The ascending branch of the resulting ageostrophic circulation coincides with the surface velocity convergence. The modeling results are supported by a 3-yr composite analysis of cold fronts with and without preceding convergence lines using NCEP-NCAR Reanalysis-1 data.</description><identifier>ISSN: 0882-8156</identifier><identifier>EISSN: 1520-0434</identifier><identifier>DOI: 10.1175/WAF-D-15-0161.1</identifier><language>eng</language><publisher>Boston: American Meteorological Society</publisher><subject>Atmospheric sciences ; Circulation ; Climatology ; Cold ; Cold front ; Cold fronts ; Components ; Convective development ; Convergence ; Convergence lines ; Cyclones ; Extratropical cyclones ; Frontogenesis ; Fronts ; Lines ; Mixed layer ; Modelling ; Seasons ; Surface velocity ; Velocity ; Warm seasons ; Weather forecasting</subject><ispartof>Weather and forecasting, 2016-10, Vol.31 (5), p.1417-1431</ispartof><rights>Copyright American Meteorological Society Oct 2016</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c413t-b4c6b5f8039a81223cecbb70ad9fa49b4c937397de763c570a96056f9050c2683</citedby><cites>FETCH-LOGICAL-c413t-b4c6b5f8039a81223cecbb70ad9fa49b4c937397de763c570a96056f9050c2683</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,3681,27924,27925</link.rule.ids></links><search><creatorcontrib>Dahl, Johannes M. L.</creatorcontrib><creatorcontrib>Fischer, Jannick</creatorcontrib><title>The Origin of Western European Warm-Season Prefrontal Convergence Lines</title><title>Weather and forecasting</title><description>The authors investigate the origin of prefrontal, warm-season convergence lines over western Europe using the Weather Research and Forecasting Model. These lines form east of the cold front in the warm sector of an extratropical cyclone, and they are frequently the focus for convective development. It is shown that these lines are related to a low-level thermal ridge that accompanies the base of an elevated mixed layer (EML) plume generated over the Iberian Peninsula and northern Africa. Using Q-vector diagnostics, including the components that describe scalar and rotational quasigeostrophic frontogenesis, it is shown that the convergence line is associated with the rearrangement of the isentropes especially at the western periphery of the EML plume. The ascending branch of the resulting ageostrophic circulation coincides with the surface velocity convergence. The modeling results are supported by a 3-yr composite analysis of cold fronts with and without preceding convergence lines using NCEP-NCAR Reanalysis-1 data.</description><subject>Atmospheric sciences</subject><subject>Circulation</subject><subject>Climatology</subject><subject>Cold</subject><subject>Cold front</subject><subject>Cold fronts</subject><subject>Components</subject><subject>Convective development</subject><subject>Convergence</subject><subject>Convergence lines</subject><subject>Cyclones</subject><subject>Extratropical cyclones</subject><subject>Frontogenesis</subject><subject>Fronts</subject><subject>Lines</subject><subject>Mixed layer</subject><subject>Modelling</subject><subject>Seasons</subject><subject>Surface velocity</subject><subject>Velocity</subject><subject>Warm seasons</subject><subject>Weather forecasting</subject><issn>0882-8156</issn><issn>1520-0434</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNpdkEtLAzEUhYMoWKtrtwNu3KS9N6-ZLEtfCoUKVroMaZqpU9qkJq3gv3dKXbm6i_NxOPcj5BGhh1jK_nIwoSOKkgIq7OEV6aBkQEFwcU06UFWMVijVLbnLeQsATDLdIdPFpy_mqdk0oYh1sfT56FMoxqcUD96GYmnTnr57m2Mo3pKvUwxHuyuGMXz7tPHB-WLWBJ_vyU1td9k__N0u-ZiMF8MXOptPX4eDGXUC-ZGuhFMrWVfAta2QMe68W61KsGtdW6HbWPOS63LtS8WdbAOtQKpagwTHVMW75PnSe0jx69SuNfsmO7_b2eDjKRushBIgBbAWffqHbuMphXadQc2ERgVctlT_QrkUc24_NIfU7G36MQjmLNa0Ys3IoDRnsQb5L0xiaaU</recordid><startdate>20161001</startdate><enddate>20161001</enddate><creator>Dahl, Johannes M. L.</creator><creator>Fischer, Jannick</creator><general>American Meteorological Society</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QH</scope><scope>7RQ</scope><scope>7TG</scope><scope>7TN</scope><scope>7UA</scope><scope>7XB</scope><scope>88F</scope><scope>8AF</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L.G</scope><scope>M1Q</scope><scope>M2O</scope><scope>MBDVC</scope><scope>P5Z</scope><scope>P62</scope><scope>PATMY</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PYCSY</scope><scope>Q9U</scope><scope>S0X</scope><scope>U9A</scope></search><sort><creationdate>20161001</creationdate><title>The Origin of Western European Warm-Season Prefrontal Convergence Lines</title><author>Dahl, Johannes M. L. ; Fischer, Jannick</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c413t-b4c6b5f8039a81223cecbb70ad9fa49b4c937397de763c570a96056f9050c2683</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Atmospheric sciences</topic><topic>Circulation</topic><topic>Climatology</topic><topic>Cold</topic><topic>Cold front</topic><topic>Cold fronts</topic><topic>Components</topic><topic>Convective development</topic><topic>Convergence</topic><topic>Convergence lines</topic><topic>Cyclones</topic><topic>Extratropical cyclones</topic><topic>Frontogenesis</topic><topic>Fronts</topic><topic>Lines</topic><topic>Mixed layer</topic><topic>Modelling</topic><topic>Seasons</topic><topic>Surface velocity</topic><topic>Velocity</topic><topic>Warm seasons</topic><topic>Weather forecasting</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dahl, Johannes M. L.</creatorcontrib><creatorcontrib>Fischer, Jannick</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Aqualine</collection><collection>ProQuest Career & Technical Education Database</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Military Database (Alumni Edition)</collection><collection>STEM Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>ProQuest Agricultural & Environmental Science</collection><collection>ProQuest Central Essentials</collection><collection>eLibrary</collection><collection>ProQuest Academic</collection><collection>Technology Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection (Proquest) (PQ_SDU_P3)</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Military Database (Proquest) (PQ_SDU_P3)</collection><collection>ProQuest research library</collection><collection>Research Library (Corporate)</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>Environmental Science Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Environmental Science Collection</collection><collection>ProQuest Central Basic</collection><collection>SIRS Editorial</collection><jtitle>Weather and forecasting</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dahl, Johannes M. L.</au><au>Fischer, Jannick</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Origin of Western European Warm-Season Prefrontal Convergence Lines</atitle><jtitle>Weather and forecasting</jtitle><date>2016-10-01</date><risdate>2016</risdate><volume>31</volume><issue>5</issue><spage>1417</spage><epage>1431</epage><pages>1417-1431</pages><issn>0882-8156</issn><eissn>1520-0434</eissn><abstract>The authors investigate the origin of prefrontal, warm-season convergence lines over western Europe using the Weather Research and Forecasting Model. These lines form east of the cold front in the warm sector of an extratropical cyclone, and they are frequently the focus for convective development. It is shown that these lines are related to a low-level thermal ridge that accompanies the base of an elevated mixed layer (EML) plume generated over the Iberian Peninsula and northern Africa. Using Q-vector diagnostics, including the components that describe scalar and rotational quasigeostrophic frontogenesis, it is shown that the convergence line is associated with the rearrangement of the isentropes especially at the western periphery of the EML plume. The ascending branch of the resulting ageostrophic circulation coincides with the surface velocity convergence. The modeling results are supported by a 3-yr composite analysis of cold fronts with and without preceding convergence lines using NCEP-NCAR Reanalysis-1 data.</abstract><cop>Boston</cop><pub>American Meteorological Society</pub><doi>10.1175/WAF-D-15-0161.1</doi><tpages>15</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0882-8156 |
| ispartof | Weather and forecasting, 2016-10, Vol.31 (5), p.1417-1431 |
| issn | 0882-8156 1520-0434 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1846405402 |
| source | American Meteorological Society; Alma/SFX Local Collection; EZB Electronic Journals Library |
| subjects | Atmospheric sciences Circulation Climatology Cold Cold front Cold fronts Components Convective development Convergence Convergence lines Cyclones Extratropical cyclones Frontogenesis Fronts Lines Mixed layer Modelling Seasons Surface velocity Velocity Warm seasons Weather forecasting |
| title | The Origin of Western European Warm-Season Prefrontal Convergence Lines |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-07T15%3A24%3A42IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=The%20Origin%20of%20Western%20European%20Warm-Season%20Prefrontal%20Convergence%20Lines&rft.jtitle=Weather%20and%20forecasting&rft.au=Dahl,%20Johannes%20M.%20L.&rft.date=2016-10-01&rft.volume=31&rft.issue=5&rft.spage=1417&rft.epage=1431&rft.pages=1417-1431&rft.issn=0882-8156&rft.eissn=1520-0434&rft_id=info:doi/10.1175/WAF-D-15-0161.1&rft_dat=%3Cproquest_cross%3E1924916035%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1924916035&rft_id=info:pmid/&rfr_iscdi=true |