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Merged
znichollscr merged 2 commits into from
Apr 9, 2026
Merged

Add note about updated nitrogen #437

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Add note
znichollscr Mar 31, 2026
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CHANGELOG
znichollscr Mar 31, 2026
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1 change: 1 addition & 0 deletions changelog/437.docs.md
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Original file line number Diff line number Diff line change
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Added note about which nitrogen deposition forcing data to use if pre-industrial control cannot be re-run
5 changes: 5 additions & 0 deletions docs/dataset-overviews/nitrogen-deposition.md
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Expand Up @@ -24,6 +24,11 @@ Therefore, existing model simulations based on `FZJ-CMIP-nitrogen-1-2`
do not need to be rerun if such a rerun is not possible.
Modelling teams that have not begun their simulations should, however,
use the latest version of the forcings as specified below.
If you have run pre-industrial control simulations with `FZJ-CMIP-nitrogen-1-2`,
it is recommended to nonetheless run historical simulations with `FZJ-CMIP-nitrogen-2-0`
because the discontinuity going from pre-industrial control `FZJ-CMIP-nitrogen-1-2`
to historical `FZJ-CMIP-nitrogen-2-0` is expected to introduce smaller issues
than using `FZJ-CMIP-nitrogen-1-2` over the historical period.
Modelling teams should record the version of the forcing files they use following the CMIP7 guidance
(see the 5<sup>th</sup> dot point here https://wcrp-cmip.github.io/cmip7-guidance/docs/CMIP7/Guidance_for_modellers/#1-requirements-expectations).

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