SMHI datasets (HARMONIE/V1, HARMONIE/V2)
Wrong 0% values in relative humidity, cloud cover and albedo fields
Description:
There are some isolated spots of one or a few grid points with wrong zero values in the fields of relative humidity (both at 2m and on pressure levels). It happened because of a wrong algorithm used for re-computation of the values from 0-1 interval to 0-100% (the supersaturation was set to 100% instead of 0% value).
The same issue can be probably found in cloud cover and albedo fields as well but its extent there is not known.
Missing values in surface sensible heat flux and surface latent heat flux fields
Description:
The sensible heat flux and surface latent heat flux fields appear to have missing values over the land and because of that should not be used.
Land-sea mask to be used to downscale MESCAN-SURFEX fields
Description:
The UERRA-HARMONIE reanalyses need to be downscaled from 11km to 5.5km in order to drive the MESCAN-SURFEX system. For that a corresponding land-sea-mask field is needed, which is currently not archived in MARS. As a solution, please download that land-sea-mask field here. We recommend users to apply it for all the MESCAN-SURFEX fields and to focus their analysis on land points only.
More information and an illustration of potential issues when not using the appropriate LSM can be found in the related C3S support ticket.
MO datasets (UM, UM/En)
The wind directions are wrong by exactly 180 degrees
Description:
The wind directions are wrong by exactly 180 degrees (the direction is the wind is blowing to, rather than where it is blowing from) The U/V components are not affected.