BGS Hosted Metadata
Greenland Flow Distortion EXperiment (GFDex): In-situ Observations of High-impact Weather Systems and Their Associated Air-sea Fluxes in the Coastal Seas of Greenland
The Greenland Flow Distortion EXperiment, based in Keflavik, Iceland, took place during February 2007. Its aim was to improve the understanding and ability to predict interactions between the atmospheric circulation and the topography of Greenland, both locally and downstream over Western Europe. Hitherto rare in situ observations of high-impact weather systems and their associated air-sea fluxes in the coastal seas of Greenland, were obtained and will be used to improve the numerical modelling and prediction of these weather systems, and thus improve the quality of the atmospheric forcing fields that are essential for accurate atmosphere-ocean coupling and the thermohaline circulation. These measurements will also be used to improve the numerical modelling and prediction of high-impact weather systems over Europe through the use of targeted observations upstream in sensitive areas of the flow.
This project investigates the role of Greenland in defining the structure and the predictability of both local and downstream weather systems, through a programme of aircraft-based observation and numerical modelling. The Greenland Flow Distortion Experiment (GFDex) will provide some of the first detailed in situ observations of the intense atmospheric forcing events that are thought to be important in modifying the ocean in this area (but are presently poorly understood): namely tip jets, barrier winds and mesoscale cyclones. Tip jets form at the southern tip of Greenland, at Cape Farewell, through the forcing of flow over and around the topography. Barrier winds occur when the large-scale flow is piled up against the southeast coast of Greenland, forcing winds parallel to the coast. While located off this southeast coast is an area of frequent mesoscale cyclogenesis. GFDex will also investigate Greenlands role in atmospheric flow predictability by carrying out upstream observations that are targeted at investigating the sensitivity of the downstream flow to the details of the upstream flow and at improving subsequent forecasts over Europe. Greenlands flow distortion can trigger large-scale atmospheric Rossby waves which influence weather systems thousands of kilometres away and several days later. These waves are by nature predictable, so by adapting our observing strategy to target specific areas, improvements in subsequent forecasts over the United Kingdom are possible.
Numerical modelling experiments after the field campaign will be used to assess any improvements from the additional targeted observations. While further numerical modelling studies of the high impact local weather systems will be evaluated and refined using the aircraft-based observations. This will increase our understanding of these systems and, through comparisons with other observations and data sets, provide accurate fields of air-sea heat and moisture fluxes for driving ocean and climate models.
Simple
- Date (Publication)
- 2007-12-10T03:10:55
- Date (Creation)
- 2007-12-10T03:10:55
- Citation identifier
- https://catalogue.ceda.ac.uk/uuid/77a24c3705599d03825ce9005a8610f8
- Citation identifier
- NCAS British Atmospheric Data Centre (NCAS BADC) / 77a24c3705599d03825ce9005a8610f8
- Point of contact
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Organisation name Individual name Electronic mail address Role Unavailable
Renfrew, Ian
Unavailable
Author NCAS British Atmospheric Data Centre (NCAS BADC)
Custodian NCAS British Atmospheric Data Centre (NCAS BADC)
Distributor NCAS British Atmospheric Data Centre (NCAS BADC)
pointofContact NCAS British Atmospheric Data Centre (NCAS BADC)
Publisher
- Maintenance and update frequency
- Unknown
- Update scope
- Series
- Keywords
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GFDex
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Meteorology
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Greenland
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GEMET - INSPIRE themes, version 1.0
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atmospheric conditions
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- Access constraints
- Other restrictions
- Other constraints
- Data within this dataset collection are available to both registered and non-registered users. See individual datasets for specific access information.
- Use constraints
- Other restrictions
- Spatial representation type
- Grid
- Language
- English
- Topic category
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- Climatology, meteorology, atmosphere
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- Begin date
- 2007-02-17T00:00:00
- End date
- 2007-03-12T00:00:00
- Unique resource identifier
- WGS 84
- Distribution format
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Name Version Contact data centre for format details.
- Distributor contact
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Organisation name Individual name Electronic mail address Role NCAS British Atmospheric Data Centre (NCAS BADC)
Distributor
- OnLine resource
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Protocol Linkage Name https://catalogue.ceda.ac.uk/uuid/77a24c3705599d03825ce9005a8610f8 CEDA Data Catalogue Page
- OnLine resource
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Protocol Linkage Name https://archive.uea.ac.uk/~e046/research/gfdex/index.htm Greenland Flow Distortion experiment
- OnLine resource
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Protocol Linkage Name https://artefacts.ceda.ac.uk/badc_datadocs/faam/file-names.html FAAM Flight Data File Names
- OnLine resource
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Protocol Linkage Name http://www.faam.ac.uk/ FAAM website
- Hierarchy level
- Series
Conformance result
- Title
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Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
- Date (Publication)
- 2010-12-08
- Statement
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Please see data lineage statements for each dataset within this collection for data lineage details.
Metadata
- File identifier
- 77a24c3705599d03825ce9005a8610f8 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Series
- Hierarchy level name
-
series
- Date stamp
- 2025-09-02T02:27:08
- Metadata standard name
- UK GEMINI
- Metadata standard version
-
2.3
- Metadata author
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Organisation name Individual name Electronic mail address Role NCAS British Atmospheric Data Centre (NCAS BADC)
Point of contact
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