# Data warning for Arctic Regional Reanalysis on single levels catalogue entry

**URL:** <https://forum.ecmwf.int/t/data-warning-for-arctic-regional-reanalysis-on-single-levels-catalogue-entry/1001>\
**Category:** C3S - Announcements\
**Tags:** c3s, carra, regional\_reanalysis\
**Created:** [29 April 2021 08:49 UTC](https://forum.ecmwf.int/t/data-warning-for-arctic-regional-reanalysis-on-single-levels-catalogue-entry/1001 "2021-04-29T08:49:02Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Anabelle](https://forum.ecmwf.int/user_avatar/forum.ecmwf.int/anabelle/32/360_2.png) [@Anabelle](https://forum.ecmwf.int/u/Anabelle)\
**Post date:** [29 April 2021 08:49 UTC](https://forum.ecmwf.int/t/data-warning-for-arctic-regional-reanalysis-on-single-levels-catalogue-entry/1001/1 "2021-04-29T08:49:02Z")

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The variable "surface roughness" at&nbsp; [https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-carra-single-levels?tab=overview](https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-carra-single-levels?tab=overview)&nbsp; is incorrect and should not be used,&nbsp;

Yours sincerely,  
 CDS team