SFNO parameter for IFS initial condition

[david5010]

Looking into the SFNO model, it seems that it uses "Z" at different pressure levels. However, from what I remember, IFS does not provide "Z" but only "GH" (at least from opendata). I'm wondering where and how the GH is transformed to "Z" in this whole process. I tried digging through the files but couldn't find much

[NickGeneva]

Conversions between things like geo-potential height and geo-potential occur in the lexicons where the variables are defined:

https://github.com/NVIDIA/earth2studio/blob/main/earth2studio/lexicon/ifs.py#L81

Have a look there. Thanks!

[david5010]

Thank you! I completely missed it, this clarifies everything!