Southern Hemisphere winter sea ice concentration simulated by HadCM3 to best explain the early last interglacial Antarctic isotope peak
GB/NERC/BAS/PDC/01084
Abstract:
The file contains Southern Hemisphere winter (September) sea ice concentration (sic) from a simulation performed using the isotope-enabled HadCM3 climate model forced with early last interglacial boundary conditions, centred approximately 128,000 years ago. The resulting sic represents a reduction in winter sea ice area of approximately 54% relative to pre-industrial and is proposed as the best explanation for the Antarctic ice core data from 128,000 years ago. The spatial pattern of sea ice retreat was determined using a large ensemble of model experiments and a pattern search optimization approach to match the last interglacial ice core isotope peak. Further details can be found in the published manuscript (https://doi.org/10.1002/2017GL074594).
This work was funded by NERC grants NE/P009271/1, NE/P013279/1, and NE/K004514/1.
Citation:
Holloway, M. (2018). Southern Hemisphere winter sea ice concentration simulated by HadCM3 to best explain the early last interglacial Antarctic isotope peak (Version None) [Data set]. Polar Data Centre, Natural Environment Research Council, UK Research & Innovation, UK. https://doi.org/10.5285/0f3d9228-2f4a-4f2c-bbe6-ee8a123db58d
Access Data
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License
| Access: | No restrictions apply to this dataset. Access to the Met Office Unified Model source code is available under license from the Met Office at http://www.metoffice.gov.uk/ research/collaboration/um-collaboration. The climate model data are available on request from http://www.bridge.bris.ac.uk/resources/simulations. |
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| Use: | This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. |
Basic Information
| Creation Date: | 2018-05-23 |
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| Dataset Progress: | Complete |
| Dataset Language: | English |
| ISO Topic Categories: |
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| Parameters: |
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Additional Information
| Reference: | Holloway, M. D., Sime, L. C., Allen, C. S., Hillenbrand, C.-D., Bunch, P., Wolff, E., & Valdes, P. J. (2017). The spatial structure of the 128 ka Antarctic sea ice minimum. Geophysical Research Letters, 44. https://doi.org/10.1002/2017GL074594 | |
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| Quality: | Masked NaN values represent grid points that are land. The grid is 1445x113 in longitude, latitude. |
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| Lineage/Methodology: | This is output from a simulation using the isotope-enabled HadCM3 climate model forced with early last interglacial boundary conditions (orbital configuration and greenhouse-gas concentrations), centred approximately 128,000 years ago. Sea ice concentration has been re-gridded from the native global model grid to a higher resolution latitude-longitude grid covering the latitude range from 52.5 to 80.5 deg S. Further details can be found in the published manuscript (https://doi.org/10.1002/2017GL074594). | |
Extent
| Paleo Temporal Coverage: | |
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| Paleo Start Date | ~128 Ka |
| Paleo End Date | ~128 Ka |
| Chronostratigraphic Unit | PLEISTOCENE |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | -80.5 |
| Northernmost | -52.5 |
| Longitude | |
| Westernmost | -180 |
| Easternmost | 180 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |
| Location: | |
| Location | Antarctica |
| Detailed Location | Southern Ocean |
Storage
| Distribution: | |
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| Distribution Media | Online Internet (HTTP) |
| Distribution Size | 1.3 MB |
| Distribution Format | netCDF |
| Fees | N/A |
| Data Storage: | One netCDF file, approximately 1.3 MB. |