...
| Info |
|---|
1. Brief description: The values of Sea-ice thickness after the model upgrade to the version CNRM-CM6.1 can be occasionally (very rarelly) unusualy higher than usually. Their maxima could reach 160. According to French sea-ice specialists it is not a numerical problem, although such values are very unusual. For example in one of the cases, a dynamical forcing has been found, explaining such massive sea-ice thickening located between 2 islands of the Canadian Arctic archipelago (a rapid increase of meridional surface current has led to sea-ice piling up along the shore of a canadian island). The data from the described case were considered valid and thus allowed to be archived. 2. Recommendation: Users should be aware of this. |
Model grid encoding change since 22 Oct 2020
| Info |
|---|
1. Brief description: After the latest CNRM model change in October 2020, the CNRM grid is inverted, i.e. j-dimension scans positively (south to north) instead of negatively (north to south) as per the S2S requirement Encoding#Gridandresolution As the related GRIB 2 scanningMode changed from 0 to 64, such GRIB 2 encoding is correct in principle. Still it is not desirable for reasons of consistency with the previous encoding of CNRM data, and in addition may cause problems for users. https://jira.ecmwf.int/servicedesk/customer/portal/4/SD-92894 2. Recommendation: Users should be aware of this when processing CNRM data from the affected period. |
BoM (ammc)
Wrong maximum values of surface air maximum temperature (Tmax) at some points for BoM data
...