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EAMxx: fix mistake in nudging docs #7513

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Jul 14, 2025
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EAMxx: fix mistake in nudging docs #7513

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EAMxx: fix mistake in nudging docs
mahf708 Jul 14, 2025
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EAMxx: document the need for UNLIMITED time dim
mahf708 Jul 14, 2025
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3 changes: 2 additions & 1 deletion components/eamxx/docs/user/nudging.md
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Expand Up @@ -9,12 +9,13 @@ The user is expected to prepapre (and then use `atmchange` to point to) nudging
In practice, this means that the data files must contain variable names known to EAMxx (only U, V, T_mid, and qv are supported now).
The files can be specified with an explicit list or via pattern matching.
The files must contain an arbitary global attribute `case_t0`, and it is recommended to be the same as the time dimension unit (the files must be time-dimensioned).
The time dimension should be UNLIMITED.
Finally, the dimension order must be such that `lev` is the last dimension, so most likely, the user must transpose the dimensions.

## Pressure in the nudging data

Pressure can be explicitly provided in the nudging data as time-varying `p_mid` corresponding to the option `TIME_DEPENDENT_3D_PROFILE` for `source_pressure_type`.
Alternatively, the data can contain a time-invariant pressure variable `p_lev` corresponding to the option `TIME_DEPENDENT_3D_PROFILE` for `source_pressure_type`.
Alternatively, the data can contain a time-invariant pressure variable `p_lev` corresponding to the option `STATIC_1D_VERTICAL_PROFILE` for `source_pressure_type`.

## Weighted nudging for RRM applications

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