Change cos_zenith_angle to cos_zenith

It is refered to as `cos_zenith` by atmos and
`cos\thetas` by land. This unifies it with one of
the models.
[skip ci]

docs/src/interfacer.md

@@ -144,7 +144,7 @@ for the following properties:
 | `LW_d`             | downwards longwave flux | W m^-2 |
 | `SW_d`             | downwards shortwave flux | W m^-2 |
 
-Note that `air_temperature`, `air_pressure`, `cos_zenith_angle`, `co2`, `diffuse_fraction`, `LW_d` and
+Note that `air_temperature`, `air_pressure`, `cos_zenith`, `co2`, `diffuse_fraction`, `LW_d` and
 `SW_d` will not be present in a `ClimaAtmosSimulation` if the model is setup with no radiation.
 Because of this, a `ClimaAtmosSimulation` must have radiation if running with the full `ClimaLand` model.
 

experiments/ClimaEarth/components/atmosphere/climaatmos.jl

@@ -178,7 +178,7 @@ Interfacer.get_field(sim::ClimaAtmosSimulation, ::Val{:air_temperature}) =
         sim.integrator.p.params.thermodynamics_params,
         CC.Fields.level(sim.integrator.p.precomputed.ᶜts, 1),
     )
-Interfacer.get_field(sim::ClimaAtmosSimulation, ::Val{:cos_zenith_angle}) = CC.Fields.array2field(
+Interfacer.get_field(sim::ClimaAtmosSimulation, ::Val{:cos_zenith}) = CC.Fields.array2field(
     sim.integrator.p.radiation.rrtmgp_model.cos_zenith,
     CC.Fields.level(axes(sim.integrator.u.c), 1),
 )

src/Interfacer.jl

@@ -157,7 +157,7 @@ get_field(
     val::Union{
         Val{:air_pressure},
         Val{:air_temperature},
-        Val{:cos_zenith_angle},
+        Val{:cos_zenith},
         Val{:co2},
         Val{:diffuse_fraction},
         Val{:height_int},

test/interfacer_tests.jl

@@ -157,7 +157,7 @@ end
     for value in (
         :air_pressure,
         :air_temperature,
-        :cos_zenith_angle,
+        :cos_zenith,
         :co2,
         :diffuse_fraction,
         :height_int,