Release of version 2 of C3S Sea Ice Edge and Type dataset

We are happy to announce the release of version 2.0 of the following satellite-based dataset in the Climate Data Store:

Sea ice edge and type daily gridded data from 1978 to present derived from satellite observations

This new version supersedes the current version 1.0, whose production will end in early October 2021.

The new version includes the following improvements:

• Use of the ERA5 Reanalysis as auxiliary data for atmospheric correction in the CDR
• Improved temperature-based correction scheme for sea ice classification in warm conditions
• Level-4 product (instead of Level-3 for version 1.0)
• Start of the Climate Data Record (CDR) in October 1978 (instead of January 1979 for version 1.0)

Additional information about the dataset and the changes implemented in version 2.0 can be found in the dataset documentation.

Users retrieving the data using the CDS API or from within the CDS Toolbox should be aware that they need to add a new 'version' attribute to their Python request as shown in the example below. See also the example code snippets at the bottom of the download data tab of the dataset.

import cdsapi

c = cdsapi.Client()

c.retrieve(
    'satellite-sea-ice-edge-type',
    {
        'format': 'tgz',
        'variable': 'sea_ice_edge',
        'region': 'northern_hemisphere',
        'cdr_type': 'icdr',
        'year': '2021',
        'month': '08',
        'day': '14',
        'version': '2_0',
    },
    'download.tar.gz')