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[FEATURE REQUEST] Allow model to run with nested boundary conditions if you add a new species #268

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ktravis213 opened this issue Apr 3, 2020 · 2 comments
Closed

[FEATURE REQUEST] Allow model to run with nested boundary conditions if you add a new species #268

ktravis213 opened this issue Apr 3, 2020 · 2 comments
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@msulprizio
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category: Feature Request New feature or request topic: Nested Grid Simulation Related to GEOS-Chem nested model simulations
Milestone
12.8.1

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@ktravis213
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Hi support team!
Currently the model will run with a restart file even if you add a new tracer. However it will not do the same for boundary conditions. This makes it difficult to run nested sensitivity tests since you have to rerun the boundary conditions with the new species. Could we add this functionality to the model?
@ktravis213 ktravis213 added the category: Feature Request New feature or request label Apr 3, 2020
@msulprizio
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Absolutely, we can add this as a functionality in GEOS-Chem 12.8.1. This capability already exists for restart files, so it would make sense to extend it to boundary conditions as well.

We want users to be aware when species are skipped and background concentrations are used, so we always advise checking the log file to ensure species are being initialized with the expected concentrations. When species aren't found in the restart file (and soon-to-be BC files), a warning is listed in the log file saying it wasn't found and the background concentration (usually 1e-20 v/v) is used.

@msulprizio msulprizio self-assigned this Apr 3, 2020
@msulprizio msulprizio added this to the 12.8.1 milestone Apr 3, 2020
msulprizio added a commit that referenced this issue Apr 24, 2020
@msulprizio
Update Get_Boundary_Conditions to apply background concentrations whe…
2c7ac9a 
…n BCs aren't found for a species

To allow for nested grid simulations to proceed if a species isn't found in the
boundary conditions file, we now apply the background species concentrations
when the species cannot be found. The min, max, or background value applied
for each species as boundary conditions will be printed to the log file. It
is recommended that users check the log file to verify that the proper BCs
are being read and applied.

See also #268.

Signed-off-by: Melissa Sulprizio <mpayer@seas.harvard.edu>
@msulprizio
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This issue is now fixed in commit 2c7ac9a and will be included in GEOS-Chem 12.8.1.

@msulprizio msulprizio added the topic: Nested Grid Simulation Related to GEOS-Chem nested model simulations label Aug 11, 2020
msulprizio added a commit that referenced this issue Oct 18, 2020
@msulprizio
Restore update to Get_Boundary_Conditions to apply background concent…
35200fb 
…rations when BCs aren't found for a species

This update was originally added in commit 2c7ac9a to Get_Boundary_Conditions
routine in hcoi_gc_main_mod.F90, but was not translated over to the module
hco_utilities_gc_mod.F90 that was introduced during HEMCO restructuring. The
orinal commit message is included below:

To allow for nested grid simulations to proceed if a species isn't found in the
boundary conditions file, we now apply the background species concentrations
when the species cannot be found. The min, max, or background value applied
for each species as boundary conditions will be printed to the log file. It
is recommended that users check the log file to verify that the proper BCs
are being read and applied.

See also #268.

Signed-off-by: Melissa Sulprizio <mpayer@seas.harvard.edu>
msulprizio added a commit to ACMG-CH4/geos-chem that referenced this issue Oct 18, 2020
@msulprizio
Add several updates introduced to GEOS-Chem 12.7.1 that are useful fo…
d13cde6 
…r CH4 inversions

(1) Update Get_Boundary_Conditions to apply background concentrations when BCs aren't found for a species

    To allow for nested grid simulations to proceed if a species isn't found in the
    boundary conditions file, we now apply the background species concentrations
    when the species cannot be found. The min, max, or background value applied
    for each species as boundary conditions will be printed to the log file. It
    is recommended that users check the log file to verify that the proper BCs
    are being read and applied.

    See also geoschem#268.

(2) Add EFY time cycle flag to HEMCO

    The EFY time cycle flag has been added to hco_config_mod.F90. This option
    will be used for meteorology fields to ensure the exact date is used (E),
    the data is found (F), and the simulation year is used (Y).

(3) Do not read FLASH_DENS and CONV_DEPTH fields in FlexGrid when lightning NOx extensionin HEMCO is off

    A shadow variable Input_Opt%DoLightNOx has been added and will be set to
    true or false depending on if the lightning NOx extension is turned on in
    HEMCO_Config.rc. When that option is off, the reading of FLASH_DENS and
    CONV_DEPTH in flexgrid_read_mod.F90 will be skipped (keeping those fields
    as all zeroes). This will avoid the requirement of having users download
    those data for simulations that do not require it.

    For more details, see geoschem#279.

Signed-off-by: Melissa Sulprizio <mpayer@seas.harvard.edu>
yantosca added a commit that referenced this issue Mar 22, 2024
@yantosca
Merge PR #2213 (Change NEI 2D emissions to xy dimension)
53635e9 
This merge brings PR #2213 (Change NEI 2D emissions to xy dimension,
by @nicholasbalasus) into the GEOS-Chem "no-diff-to-benchmark" development
stream.

This PR implements a workaround to an issue caused by the merge of
HEMCO PR #235 (Bug fix for vertical regridding).  This must be merged
simultaneously with HEMCO PR #268.

Signed-off-by: Bob Yantosca <yantosca@seas.harvard.edu>
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category: Feature Request New feature or request topic: Nested Grid Simulation Related to GEOS-Chem nested model simulations
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