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EAMxx is not yet officially supported. Use these pages at your own risk. |
Background:
E3SM has developed the idiosyncratic but convenient habit of referring to specific humidity (=mass of water species divided by mass of total air) as wet mixing ratio and the actual mixing ratio (=mass of water species divided by mass of dry air) as dry mixing ratio.
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Dycore:wet mmr - The dycore needs interface is currently written for wet mixing ratios because ???internally, the dycore’s prognostic mass variable is total mass (not dry mass). Working with wet mixing ratios allows the dycore to simply compute tracer mass, without ever computing “dry mass”. Dry mass is an unusual quantity which would not normally be used within the dycore.
Atmosphere Driver:wet mmr - Because many variables passed to the AD are advected by the dycore, we decided to insist that all variables handled by the AD are wet.
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