# Release of version 2 of C3S Sea Ice Thickness dataset

**URL:** <https://forum.ecmwf.int/t/release-of-version-2-of-c3s-sea-ice-thickness-dataset/1380>\
**Category:** C3S - Announcements\
**Tags:** c3s, ecv\_ocean\
**Created:** [19 October 2021 14:26 UTC](https://forum.ecmwf.int/t/release-of-version-2-of-c3s-sea-ice-thickness-dataset/1380 "2021-10-19T14:26:44Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Julien\_Nicolas](https://forum.ecmwf.int/letter_avatar_proxy/v4/letter/j/41988e/32.png) [@Julien\_Nicolas](https://forum.ecmwf.int/u/Julien_Nicolas)\
**Post date:** [19 October 2021 14:26 UTC](https://forum.ecmwf.int/t/release-of-version-2-of-c3s-sea-ice-thickness-dataset/1380/1 "2021-10-19T14:26:44Z")

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

[Sea ice thickness monthly gridded data for the Arctic from 2002 to present derived from satellite observations](https://cds.climate.copernicus.eu/cdsapp#!/dataset/satellite-sea-ice-thickness)

 ![](https://forum.ecmwf.int/uploads/default/original/1X/3669fc4e46224b182459d589202a4d35e4f7a7c5.png)

This new version supersedes the current **version 1.0** , which provides monthly data through **April 2021** and will **no longer be updated**.

The new version includes the following **improvements** or **changes** :

- Extension of the CDR period from March 2015 to April 2020.
- Newly reprocessed input data from Envisat and CryoSat-2. 
- Improved snow climatology. 
- Improved computation of the gridded sea-ice thickness uncertainty.&nbsp; 
- Minor changes to variable attributes and flag values.

Additional information about the dataset and the changes implemented in version 2.0 can be found in the dataset [documentation](https://cds.climate.copernicus.eu/cdsapp#!/dataset/satellite-sea-ice-thickness?tab=doc).