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Update StandardNamesRules.rst: changesurface prefix to _at_surface suffix #72

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Sep 27, 2024
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11 changes: 7 additions & 4 deletions StandardNamesRules.rst
Original file line number Diff line number Diff line change
Expand Up @@ -42,7 +42,7 @@ CCPP Standard Name Rules
words or phrases to be substituted. The new standard name is constructed by
joining the base standard name to the qualifiers using underscores.

[``surface``] [``component``] standard_name [*at* ``surface``] [*in* ``medium``]
[``component``] standard_name [*at* ``level``] [*in* ``medium``]
[*due_to* ``process``] [*assuming* ``condition``]

See the list of currently-used qualifiers below for help.
Expand Down Expand Up @@ -152,9 +152,9 @@ XY-surface
Prefixes
^^^^^^^^

| toa
| tropopause
| surface
None. Note that this is a departure from the CF conventions, which use
surface_ as a prefix. This is to maintain consistency with all other
level qualifiers that are used as _at_level-qualifier (i.e. as suffix).
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Personally, I am okay with the surface_ variables that define quantities at the surface. This is partially because that is the way CF defines variables (which allows us to follow rule 1 more closely) and partially because in an atmosphere model, surface variables are usually derived from other model variables.


Suffixes
^^^^^^^^
Expand All @@ -173,6 +173,9 @@ Suffixes
| at_top_of_atmosphere_model
| at_top_of_dry_convection
| **at_interfaces**
| **at_toa**
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Is there a difference between "toa" (defined as "top of atmosphere") and "top of atmosphere model"?

This may be worthy of a separate discussion, if so I won't hold up this PR but we can address it later.

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If that question is directed to me than I don't have a definitive answer for you, sorry.

| **at_tropopause**
| **at_surface**
| **at_surface_adjacent_layer**
| **at_2m**
| **at_10m**
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