Wip on adding prescribed cloud droplet number concentration #3179
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
trontrytel
force-pushed
the
aj/prescribe_N_in_1M
branch
from
af7cf87
to
9438a30
Compare
szy21
approved these changes
Jul 9, 2024
nefrathenrici
approved these changes
Jul 9, 2024
trontrytel
force-pushed
the
aj/prescribe_N_in_1M
branch
from
9438a30
to
66bc9ae
Compare
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This PR changes the default rain autoconversion rate from 1 moment to prescribing cloud droplet number concentration.
The previous default option can still be used by specifying the
prescribed_cloud_droplet_number_concentration = 0. As usual, the parameter value can be overwritten via the toml files.I kept one test with the old default and switched the rest to the new behavior. The changes in the results are small - you can see a slightly smoother precipitation profile in diagnostic edmf dycoms case. In some other cases there is a small decrease in precipitaton.
I want to switch to the new default because we have some good results calibrating it in KiD, and I want to experiment some more with it in Atmos with the help of our summer student.