add glomap dust modes (#111)

This PR adds in new aerosol variables needed for the Met Office LFRIC forecast model. These are the number and mass fractions for the two dust modes in the UKCA/GLOMAP aerosol model.

Author: mo-hlawrence

Metadata-standard-names.md

@@ -8,6 +8,7 @@
 * [diagnostics](#diagnostics)
 * [atmospheric_composition](#atmospheric_composition)
 * [atmospheric_composition: GOCART aerosols](#atmospheric_composition-gocart-aerosols)
+* [atmospheric_composition: GLOMAP/UKCA aerosols](#atmospheric_composition-glomapukca-aerosols)
 * [emissions](#emissions)
 * [Application-specific variables](#application-specific-variables)
 * [system variables](#system-variables)
@@ -449,6 +450,15 @@ Note that appending '_on_previous_timestep' to standard_names in this section yi
     * `real(kind=kind_phys)`: units = m-1
 * `volume_extinction_in_air_due_to_aerosol_particles_lambda3`: Aerosol extinction at wavelength3
     * `real(kind=kind_phys)`: units = m-1
+## atmospheric_composition: GLOMAP/UKCA aerosols
+* `mass_fraction_of_dust_coarse_aerosol_particles_in_air`: Mass fraction of coarse mode dust aerosol particles
+    * `real(kind=kind_phys)`: units = kg kg-1
+* `mass_fraction_of_dust_accumulation_aerosol_particles_in_air`: Mass fraction of accumulation mode dust aerosol particles
+    * `real(kind=kind_phys)`: units = kg kg-1
+* `number_fraction_of_coarse_aerosol_particles_in_air`: Number fraction of coarse mode dust aerosol particles
+    * `real(kind=kind_phys)`: units = 1
+* `number_fraction_of_accumulation_aerosol_particles_in_air`: Number fraction of accumulation mode dust aerosol particles
+    * `real(kind=kind_phys)`: units = 1
 ## emissions
 Emissions variables, contributed for the Community Emissions Data System (CEDS)
 * `emissions_of_co_due_to_anthropogenic`: Carbon monoxide emissions from anthropogenic sources, total

standard_names.xml

@@ -787,6 +787,24 @@
       <type kind="kind_phys" units="m-1">real</type>
     </standard_name>
   </section>
+  <section name="atmospheric_composition: GLOMAP/UKCA aerosols">
+    <standard_name name="mass_fraction_of_dust_coarse_aerosol_particles_in_air"
+                   long_name="Mass fraction of coarse mode dust aerosol particles">
+      <type kind="kind_phys" units="kg kg-1">real</type>
+    </standard_name>
+    <standard_name name="mass_fraction_of_dust_accumulation_aerosol_particles_in_air"
+                   long_name="Mass fraction of accumulation mode dust aerosol particles">
+      <type kind="kind_phys" units="kg kg-1">real</type>
+    </standard_name>
+    <standard_name name="number_fraction_of_coarse_aerosol_particles_in_air"
+                   long_name="Number fraction of coarse mode dust aerosol particles">
+      <type kind="kind_phys" units="1">real</type>
+    </standard_name>
+      <standard_name name="number_fraction_of_accumulation_aerosol_particles_in_air"
+                   long_name="Number fraction of accumulation mode dust aerosol particles">
+      <type kind="kind_phys" units="1">real</type>
+    </standard_name>
+  </section>
   <section name="emissions"
            comment="Emissions variables, contributed for the Community Emissions Data System (CEDS)">
     <standard_name name="emissions_of_co_due_to_anthropogenic"