DESCRIPTION OF CHANGES: this PR includes the addition of the NSAS as BMJ convection schemes. Both schemes were copied from the WRF 4.4 code base, and modified to prevent out of bound errors in the case of low model tops.
TESTS CONDUCTED: Runs as before. BMJ significantly increases convective precipitation compared to Tiedtke.
NOTES: both NSAS and BMJ require PBL height (absolute or in the form of a z-level index (in the case of BMJ) ) as an input. Currently , the PBL scheme in ICAR does not compute a PBL height. Therefore, the PBL height is hardcoded as a arbitrary, uniform, fixed value above the ground in cu_driver.f90. Sensitivity tests will be conducted to see how sensitive the schemes are to these values, and if this warrants the implementation of a more sophisticated PBL scheme to calculate the PBL height properly.
Checklist
Merging the PR depends on following checklist being completed. Add X between
each of the square brackets if they are completed in the PR itself. If a
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[ ] Closes issue #xxxx (An issue must exist or be created to be closed. The
issue describes and documents the problem and general solution, the PR
describes the technical details of the solution.)
TYPE: enhancement, new feature
KEYWORDS: convection, NSAS, BMJ
SOURCE: Bert Kruyt, NCAR RAL
DESCRIPTION OF CHANGES: this PR includes the addition of the NSAS as BMJ convection schemes. Both schemes were copied from the WRF 4.4 code base, and modified to prevent out of bound errors in the case of low model tops.
TESTS CONDUCTED: Runs as before. BMJ significantly increases convective precipitation compared to Tiedtke.
NOTES: both NSAS and BMJ require PBL height (absolute or in the form of a z-level index (in the case of BMJ) ) as an input. Currently , the PBL scheme in ICAR does not compute a PBL height. Therefore, the PBL height is hardcoded as a arbitrary, uniform, fixed value above the ground in cu_driver.f90. Sensitivity tests will be conducted to see how sensitive the schemes are to these values, and if this warrants the implementation of a more sophisticated PBL scheme to calculate the PBL height properly.
Checklist
Merging the PR depends on following checklist being completed. Add
Xbetween each of the square brackets if they are completed in the PR itself. If a bullet is not relevant to you, please comment on why below the bullet.