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ESCOMP / PUMAS

Parameterization for Unified Microphysics Across Scales
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PUMAS Science updates and fixes 2022 #38

Closed andrewgettelman closed 2 years ago

andrewgettelman commented 2 years ago

I am readying code for PUMAS that does several things:

  1. Adds number tendencies
  2. Cleans up numerics for the vapor deposition onto snow limiters (this was probably a bug in the previous version)
  3. Changes Immersion Freezing from the CNT version in CAM6 BACK to the old Bigg formulation in CAM5

Item 3 is necessary because immersion freezing from CNT is not bounded and does not work well at long timesteps (>60s or les). So it was having a massive influence on ice number. Instead we will go back to the Bigg formulation from CAM5, at least for now.

A PR will be ready soon: cam and PUMAS code. Will make a CAM issue.

andrewgettelman commented 2 years ago

Now linked to PR #41

andrewgettelman commented 2 years ago

This is complete.