Some crude ensemble estimates for noice part #59
anddebol
started this conversation in
Show and tell
Replies: 2 comments 1 reply
-
Quick followup |
Beta Was this translation helpful? Give feedback.
0 replies
-
Thank you for sharing this! We focused most of our attention so far on the ice-containing (FixN) simulations, where the small-domain simulations develop oscillations of domain-mean quantities that seem to be associated with a dominating precipitating cell lifecycle. Would it make sense to consider a longer averaging time to span several oscillations that may be associated with typical cell lifecycles? |
Beta Was this translation helpful? Give feedback.
1 reply
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
-
Hi everyone,
Our group was tinkering with some estimates of inherit ensemble spread and differences between LES models on warm (noice) microphysics.
To estimate the ensemble spread we ran 8 members with different initial perturbation of inside boundary layer temperature, and also some experiments with the same initial conditions but different timesteps for lw radiation (nskip in the legend below, we run RRTMG for that in RCC MSU LES). Note that those experiments are on coarse grid (200m horizontally and 75 levels with uniform vertical resolution -- way more forgiving in terms of computational costs).
Some of the results are in figure below
Basically two things can be noted here: prescribed resolution run falls inside the ensemble spread, and most of the differences between the different LES models are larger than the spread (though they get closer towards the end of the experiment for LWP). However the amount of ensemble members definitely needs to be increased, for anything definitive to say.
Beta Was this translation helpful? Give feedback.
All reactions