Add fixes for transport tracers simulation #1890
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Transport tracer species aoa*, nh*, St80_25, and StOX did not have molecular weights defined because they're not traditional chemical species. This causes issues with unit conversions in the code and results in negative and/or zero SpeciesConc output. To avoid this, we define MW_g: 1.0 for those species. Signed-off-by: Melissa Sulprizio <mpayer@seas.harvard.edu>
1. Move initialization of mask arrays into loop over species. 2. Make sure to do calculations for maintaining the mixing ratio only in the defined region (where Mask is 1) 3. Fix typo in the logic for determining masks of latitude zones. Signed-off-by: Melissa Sulprizio <mpayer@seas.harvard.edu>
The stOX tracer is defined in GMAO's TR_GridComp but is not commonly utilized and isn't needed in GEOS-Chem. It is removed here to avoid confusion. The fields needed for stOX (GLOBAL_O3 and O3_LOSS) are also removed from tracer_mod.F90 and TransportTracer configuration files. Signed-off-by: Melissa Sulprizio <mpayer@seas.harvard.edu>
Instead of multiplying the source or sink application by the Mask array, the code now checks if Mask > 0 before applying the source or sink. Multiplying by the Mask array may have inadvertently set species concentrations to zero instead of not implying the source or sink. Signed-off-by: Melissa Sulprizio <mpayer@seas.harvard.edu>
The Budget diagnostics collection is now needed for TransportTracer benchmarking. It is now disabled by default to avoid saving out unnecessary data. Signed-off-by: Melissa Sulprizio <mpayer@seas.harvard.edu>
lizziel
approved these changes
Jul 27, 2023
|
All GCClassic and GCHP integration tests for this update have passed. |
yantosca
added
category: Bug Fix
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Name and Institution (Required)
Name: Melissa Sulprizio
Institution: Harvard / GCST
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Describe the update
This pull request fixes several remaining issues in the transport tracers simulation following #1816. These fixes primarily involve proper calculation and application of masks for applying sources and sinks to latitude zones and vertical regions. An additional fix that was also addressed in the dev/14.2.1 branch is to define MW_g: 1.0 for species with no current molecular weight defined to avoid negative or zero concentrations for those species.
Expected changes
These updates only impact the TransportTracers simulation and will change concentrations of the aoa*, st80_25, and e90(* species.