f.cam6_3_153.FLTHIST_ne30.GLL_grid.001

[cecilehannay]

Purpose: Testing if the difference in SW over topography between cam6_3_153 and cam6_3_132 are coming from the way we read the topography.

• cam6_3_132 topo is read in on physics grid, mapped to GLL and then mapped back to physics grid (we did that to remove noise in derived variables like PSL).
• In CAM6_3_153 we read in topography on the GLL grid and map to physics grid.

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Description: same as f.cam6_3_153.FLTHIST_ne30.001 (#153) except code mod to revert reading in PHIS on the GLL grid:

/glade/campaign/cesm/cesmdata/cseg/runs/cesm2_0/f.cam6_3_153.FLTHIST_ne30.GLL_grid.001/SourceMods/src.cam/dyn_comp.F90 

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Case directory:

• Locally (if still available): /glade/campaign/cesm/cesmdata/cseg/runs/cesm2_0/f.cam6_3_153.FLTHIST_ne30.GLL_grid.001

• On github: https://github.com/NCAR/amwg_dev/tree/f.cam6_3_153.FLTHIST_ne30.GLL_grid.001

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  Sandbox:

• Locally (if still available): /glade/work/hannay/cesm_tags/cam6_3_153

• On github: https://github.com/ESCOMP/CAM/tree/cam6_3_153

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  Diagnostics:

• ADF diags (if available) https://webext.cgd.ucar.edu/FLTHIST/f.cam6_3_153.FLTHIST_ne30.GLL_grid.001/atm/

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  Output:

• Raw output on derecho (if still available) /glade/derecho/scratch/hannay/archive/f.cam6_3_153.FLTHIST_ne30.GLL_grid.001/

• CAM Climos: /glade/campaign/cgd/amp/amwg/climo/f.cam6_3_153.FLTHIST_ne30.GLL_grid.001

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  Contacts: @cecilehannay, @PeterHjortLauritzen

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  Extra details:

[PeterHjortLauritzen]

It does not look like reading in topography on the GLL grid (or not) is significant (as I was expecting).

[brianpm]

Quick and preliminary southeast Pacific cloud analysis. I'll add more when I can. sepac_clouds_20240413.pdf

[brianpm]

Okay, one small adjustment to my previous plots: I changed the cloud liquid water from ERA5 to AMSR2 (2012-2023). The result is qualitatively the same, with CAM having too much liquid.

[brianpm]

And my last update for today. I've added the VOCALS transect along 20°S to my prototype code. Here's an example comparing CLDLIQ to ERA5 in SON (the cloudy season). The ERA5 data is on 37 standard pressure levels, and the CAM data is just on lev (i.e., not correct pressure levels yet).