The total land-ice freshwater flux is zero in simulations with data ice-shelf melt fluxes (DISMF) #6719
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This was referenced Oct 30, 2024
jonbob
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Fix total land-ice freshwater flux in data mode Previously, the total was only being computed when thermodynamics below ice shelves are actively computed, whereas we need to compute the total of the interface flux and the frazil flux when the interface flux comes from a data file as well. While we expect the frazil flux to be zero, these code modifications do not assume or require this to be true. Fixes #6719 [BFB] purely diagnostic.
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Whereas the total land-ice freshwater flux (
landIceFreshwaterFluxTotalis computed correctly in simulations with prognostic ice-shelf melt fluxes (PISMF) as the sum of the flux at the ice-ocean interface,landIceFreshwaterFlux, and the frazil flux,frazilIceFreshwaterFlux, this is not the case when ice-shelf melt fluxes come from a data file (DISMF).See, for example, these MPAS-Analysis plots showing seemingly no melt fluxes:
https://web.lcrc.anl.gov/public/e3sm/diagnostic_output/ac.dcomeau/E3SMv3_dev/20241018.v3.SORRME3r3.piControl.scaledDISMF.chrysalis/mpas_analysis/develop/yrs1-10/ocean/index.html#antmelttime
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