Climatology and dynamics of the link between dry intrusions and cold fronts during winter. Part I: global climatology
dc.contributor.author | Catto, JL | |
dc.contributor.author | Raveh-Rubin, S | |
dc.date.accessioned | 2019-04-03T08:31:00Z | |
dc.date.issued | 2019-05-07 | |
dc.description.abstract | Cold fronts are a primary feature of the day-to-day variability of weather in the midlatitudes, and feature in conceptual extratropical cyclone models alongside the dry intrusion airstream. Here the climatological frequency and spatial distribution of the co-occurrence of these two features are quantified, and the differences in cold front characteristics (intensity, size, and precipitation) when a dry intrusion is present or not are calculated. Fronts are objectively identified in the ECMWF ERA-Interim dataset for the winter seasons in each hemisphere and split into 3 sub-types: central fronts (within a cyclone area); trailing fronts (outwith the cyclone area but connected to a central front); and isolated fronts (not connected to a cyclone). These are then associated with dry intrusions identified using Lagrangian trajectory analysis. Trailing fronts are most likely to be associated with a DI in both hemispheres, and this occurs more frequently in the western parts of the major storm track regions. Isolated fronts are linked to DIs more frequently on the eastern ends of the storm tracks, and in the subtropics. All front types, when co-occurring with a DI, are stronger in terms of their temperature gradient, are much larger in area, and typically have higher average precipitation. Therefore, climatologically the link with DIs increases the impact of cold fronts. There are some differences in the statistics of the precipitation for trailing and isolated fronts that are further investigated in Part II of this study. | en_GB |
dc.description.sponsorship | Australian Research Council | en_GB |
dc.description.sponsorship | Swiss National Science Foundation | en_GB |
dc.description.sponsorship | Benoziyo Endowment Fund for the Advancement of Science | en_GB |
dc.identifier.citation | Published online 7 May 2019 | en_GB |
dc.identifier.doi | 10.1007/s00382-019-04745-w | |
dc.identifier.grantnumber | DE140101305 | en_GB |
dc.identifier.grantnumber | PMPDP2 158347 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/36711 | |
dc.language.iso | en | en_GB |
dc.publisher | Springer | en_GB |
dc.rights | © The Author(s) 2019. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. | |
dc.subject | Atmospheric fronts | en_GB |
dc.subject | Dry intrusions | en_GB |
dc.subject | Extratropical cyclones | en_GB |
dc.subject | Trajectories | en_GB |
dc.subject | Climatology | en_GB |
dc.subject | Reanalysis | en_GB |
dc.title | Climatology and dynamics of the link between dry intrusions and cold fronts during winter. Part I: global climatology | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2019-04-03T08:31:00Z | |
dc.identifier.issn | 0930-7575 | |
dc.description | This is the final version. Available on open access from Springer via the DOI in this record | en_GB |
dc.description | Data availability: ERA-Interim data are available online (http://apps.ecmwf.int/datasets/). | en_GB |
dc.identifier.journal | Climate Dynamics | en_GB |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en_GB |
dcterms.dateAccepted | 2019-03-22 | |
rioxxterms.funder | Natural Environment Research Council | en_GB |
rioxxterms.identifier.project | NE/R005222/1 | en_GB |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2019-03-22 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2019-04-02T15:25:50Z | |
refterms.versionFCD | AM | |
refterms.dateFOA | 2019-05-13T12:31:32Z | |
refterms.panel | B | en_GB |
rioxxterms.funder.project | 9b18af34-7197-4cbf-8a95-e8e1f76c34cf | en_GB |
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This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.