Dataset
ESA Sea Ice Climate Change Initiative (Sea_Ice_cci): High(er) Resolution Sea Ice Concentration Climate Data Record Version 3 (SSM/I and SSMIS)
Abstract
This climate data record of sea ice concentration (SIC) is obtained using passive microwave satellite data from the Special Sensor Microwave Imager (SSM/I) and the Special Sensor Microwave Imager Sounder (SSMIS) over the polar regions (Arctic and Antarctic). The processing chain features: 1) dynamic tuning of tie-points and algorithms, 2) correction of atmospheric noise using a Radiative Transfer Model, 3) computation of per-pixel uncertainties, 4) an optimal hybrid sea ice concentration algorithm, and 5) pan-sharpening of the SIC fields using the near-90 GHz imagery channels. This dataset was generated by the ESA Climate Change Initiative (CCI+) Sea Ice Phase 1 project. This dataset is an enhanced-resolution version of the EUMETSAT Ocean and Sea Ice Satellite Application Facility Global Sea Ice Concentration Climate Data Record (OSI SAF OSI-450-a CDR) over the period 1991-2020.
Details
| Previous Info: |
No news update for this record
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| Previously used record identifiers: |
No related previous identifiers.
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| Access rules: |
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence(s): https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_seaice_terms_and_conditions.pdf When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. |
| Data lineage: |
This dataset is an enhanced-resolution version of the EUMETSAT Ocean and Sea Ice Satellite Application Facility Global Sea Ice Concentration Climate Data Record (OSI SAF OSI-450-a CDR) over the period 1991-2020. It uses satellite data from US satellite missions SSM/I and SSMIS prepared by the EUMETSAT Climate Monitoring SAF and ECMWF/C3S ERA5 data. |
| File Format: |
The data are in NetCDF format.
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Related Documents
Citations: 2
The following citations have been automatically harvested from external sources associated with this resource where DOI tracking is possible. As such some citations may be missing from this list whilst others may not be accurate. Please contact the helpdesk to raise any issues to help refine these citation trackings.
| Rauschenbach, Q., Doerr, J., Notz, D. & Kern, S. (2024) UHH Sea Ice Area Product. https://doi.org/10.25592/UHHFDM.11346 https://doi.org/10.25592/uhhfdm.11346 |
| Rauschenbach, Q., Doerr, J., Notz, D. & Kern, S. (2024) UHH Sea Ice Area Product. https://doi.org/10.25592/UHHFDM.8525 https://doi.org/10.25592/uhhfdm.8525 |
Process overview
Instrument/Platform pairings
Computation Element: 1
| Title | CCI+ Phase 1 SIC: N90LIN and pan-sharpening |
| Abstract | The CCI+ Phase 1 Sea Ice Concentration (SIC) production has two streams: N90LIN, and pan-sharpening. The N90LIN step prepares SICs relying mostly on the near-90 GHz channels (higher resolution, higher noise). The pan-sharpening step prepares SICs using the results of both the OSI SAF “19/37 GHz” algorithm (SICCI3LF) and N90LIN (higher resolution, higher noise). The result of the pan-sharpening step (named “resolution enhanced” SICCI3LF, reSICCI3LF) is a main SIC outcome from CCI+ Phase 1, while N90LIN is more seen as a by-product for expert users (because of the increased noise). |
| Input Description | None |
| Output Description | None |
| Software Reference | None |
| Output Description | None |
- var_id: Lambert_Azimuthal_Grid
- units: %
- long_name: algorithm uncertainty (one standard deviation) of concentration of sea ice
- var_id: algorithm_standard_uncertainty
- units: %
- standard_name: sea_ice_area_fraction
- var_id: ice_conc
- long_name: fully filtered concentration of sea ice using atmospheric correction of brightness temperatures and open water filters
- units: %
- long_name: sea ice concentration estimates as retrieved by the algorithm, and that were edited away by the various filters
- var_id: raw_ice_conc_values
- units: %
- long_name: smearing uncertainty (one standard deviation) of concentration of sea ice
- var_id: smearing_standard_uncertainty
- standard_name: sea_ice_area_fraction status_flag
- var_id: status_flag
- long_name: status flag bit array for sea ice concentration retrievals
- var_id: time_bnds
- units: %
- standard_name: sea_ice_area_fraction standard_error
- long_name: total uncertainty (one standard deviation) of concentration of sea ice
- var_id: total_standard_uncertainty
- units: km
- standard_name: projection_x_coordinate
- long_name: x coordinate of projection (eastings)
- var_id: xc
- units: km
- standard_name: projection_y_coordinate
- long_name: y coordinate of projection (northings)
- var_id: yc
Co-ordinate Variables
- units: degrees_north
- standard_name: latitude
- var_id: lat
- long_name: latitude coordinate
- units: degrees_east
- standard_name: longitude
- var_id: lon
- long_name: longitude coordinate
- standard_name: time
- var_id: time
- units: seconds
- long_name: reference time of product
Temporal Range
1991-01-07T00:00:00
2020-12-31T23:59:59
Geographic Extent
90.0000° |
||
-180.0000° |
180.0000° |
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-90.0000° |