Dr Petra Heil

Largely agree with the proposed changes, including: "Proposed name: Sea-ice thickness" With request to make proposed definition even clearer, i.e.: "Proposed definition: Downward vertical distance from the upper sea-ice surface...

The logical decision is to depreciate both, Sea-ice characteristics (code 404) and Sea-ice type (code 407). These are not measurable, and in general do not sure the same units. Instead...

> This information could be useful for us. https://nsidc.org/learn/parts-cryosphere/sea-ice/science-sea-ice#:~:text=The%20World%20Meteorological%20Organization%20(WMO,3.9%20to%2011.8%20inches)%20thick. > > (I haven't yet found the main WMO source cited on this webpage. I will update you asap) > >...

Strongly endorsing the proposed change of variable name and definition to: Proposed name: Sea-ice concentration and Proposed definition: Fraction of an ocean area covered by sea ice. Not in agreement...

Hi Joerg. The vertical levels for sea-ice temperature depend on the method applied. Agree these need to be provided in the meta data for each data set. Will it be...

Fully endorsing: The proposed name: Sea-ice freeboard and the proposed definition: Elevation of the upper sea-ice surface relative to the sea surface

Fully endorse this one. Thank you.