Blocking Detection Based on Synoptic Filters
The Tibaldi-Molteni blocking index is supplemented by additional filter criteria to eliminate cut-off lows and subsynoptic structures. We introduce three blocking filters and analyse their sensitivities: (i) a quantile filter requiring a minimum geopotential height anomaly to reject cut-off lows, (i...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wiley
2011-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2011/717812 |
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| _version_ | 1832564546129100800 |
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| author | Bernd Schalge Richard Blender Klaus Fraedrich |
| author_facet | Bernd Schalge Richard Blender Klaus Fraedrich |
| author_sort | Bernd Schalge |
| collection | DOAJ |
| description | The Tibaldi-Molteni blocking index is supplemented by additional filter criteria to eliminate cut-off lows and subsynoptic structures. We introduce three blocking filters and analyse their sensitivities: (i) a quantile filter requiring a minimum geopotential height anomaly to reject cut-off lows, (ii) an extent filter to extract scales above a
minimum zonal width, and (iii) a persistence filter to extract events with a minimum duration. Practical filter application is analysed in two case studies and the blocking climatologies for the Northern and the Southern Hemisphere. |
| format | Article |
| id | doaj-art-7c3d507aec304848a9ad6d81e1dbb4ee |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-7c3d507aec304848a9ad6d81e1dbb4ee2025-02-03T01:10:49ZengWileyAdvances in Meteorology1687-93091687-93172011-01-01201110.1155/2011/717812717812Blocking Detection Based on Synoptic FiltersBernd Schalge0Richard Blender1Klaus Fraedrich2Meteorologisches Institut, KlimaCampus, University of Hamburg, Grindelberg 5, 20144 Hamburg, GermanyMeteorologisches Institut, KlimaCampus, University of Hamburg, Grindelberg 5, 20144 Hamburg, GermanyMeteorologisches Institut, KlimaCampus, University of Hamburg, Grindelberg 5, 20144 Hamburg, GermanyThe Tibaldi-Molteni blocking index is supplemented by additional filter criteria to eliminate cut-off lows and subsynoptic structures. We introduce three blocking filters and analyse their sensitivities: (i) a quantile filter requiring a minimum geopotential height anomaly to reject cut-off lows, (ii) an extent filter to extract scales above a minimum zonal width, and (iii) a persistence filter to extract events with a minimum duration. Practical filter application is analysed in two case studies and the blocking climatologies for the Northern and the Southern Hemisphere.http://dx.doi.org/10.1155/2011/717812 |
| spellingShingle | Bernd Schalge Richard Blender Klaus Fraedrich Blocking Detection Based on Synoptic Filters Advances in Meteorology |
| title | Blocking Detection Based on Synoptic Filters |
| title_full | Blocking Detection Based on Synoptic Filters |
| title_fullStr | Blocking Detection Based on Synoptic Filters |
| title_full_unstemmed | Blocking Detection Based on Synoptic Filters |
| title_short | Blocking Detection Based on Synoptic Filters |
| title_sort | blocking detection based on synoptic filters |
| url | http://dx.doi.org/10.1155/2011/717812 |
| work_keys_str_mv | AT berndschalge blockingdetectionbasedonsynopticfilters AT richardblender blockingdetectionbasedonsynopticfilters AT klausfraedrich blockingdetectionbasedonsynopticfilters |