Abstract:
The data set comprises of ionospheric vorticity estimates determined from measurements of ionospheric velocity made by the Super Dual Auroral Radar Network (SuperDARN). The vorticity estimates have been determined across the whole of the northern hemisphere polar ionosphere. The data cover the interval from 2000 to 2005 inclusive.
Keywords:
SuperDARN, ionosphere, vorticity
Chisham, G. (2020). Ionospheric vorticity across the northern polar ionosphere determined from SuperDARN velocity data - 2000 to 2005 inclusive (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/f0149848-bd81-4a3e-ac20-67d347e7d480
| Use Constraints: | This data is supplied under Open Government Licence v3.0 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. |
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| Creation Date: | 2020-03-04 |
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| Dataset Progress: | Complete |
| Dataset Language: | English |
| ISO Topic Categories: |
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| Parameters: |
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| Personnel: | |
| Name | UK PDC |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Name | Gareth Chisham |
| Role(s) | Investigator, Technical Contact |
| Organisation | British Antarctic Survey |
| Parent Dataset: | N/A |
| Reference: | Chisham et al. (2009), Spatial distribution of average vorticity in the high-latitude ionosphere and its variation with interplanetary magnetic field direction and season, J. Geophys. Res., 114, A09301, doi:10.1029/2009JA014263. | |
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| Quality: | The overall quality of the vorticity estimates is highly dependent on the raw SuperDARN velocity data that provide the primary data source. These are generally of high quality with low errors. The quality of the vorticity estimates is mostly affected by missing velocity data. To mitigate this the vorticity estimates are only determined when adequate SuperDARN velocity data are available. See Chisham et al. (2009) for full details regarding data quality. |
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| Lineage: | The vorticity estimates are determined by identifying SuperDARN velocity measurements around spatially closed loops determined by the geometry of the SuperDARN beam look directions. The vorticity at the centre of these closed loops is determined from the velocity around the loops by using Stokes' theorem. The vorticity determination methodology is outlined in Chisham et al. (2009). |
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| Temporal Coverage: | |
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| Start Date | 2000-01-01 |
| End Date | 2005-12-31 |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | 50 |
| Northernmost | 90 |
| Longitude | |
| Westernmost | -150 |
| Easternmost | -20 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |
| Location: | |
| Location | Ionosphere |
| Detailed Location | Canada, USA, and Iceland |
| Sensor(s): |
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| Data Collection: | The analysis uses SuperDARN data from the Kodiak, Prince George, Saskatoon, Kapuskasing, Stokkseyri and Goose Bay SuperDARN radars. The raw data were analysed using the SuperDARN FitACF v2.5. The data were mapped using the Chisham et al.(2008) virtual height model. The data are presented in Altitude-Adjusted Corrected GeoMagnetic (AACGM) co-ordinates. |
| Distribution: | |
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| Distribution Media | Online Internet (HTTP) |
| Distribution Size | 321.0 MB |
| Distribution Format | ASCII |
| Fees | N/A |
| Data Storage: | There is a single data file in which each line represents a different vorticity estimate. The data comprise 3 columns (all floats) which represent AACGM latitude, Magnetic Local Time, and Vorticity (in mHz). |