tilmes
commented
4 months ago Several diagnostics were performed by John Fasullo: https://webext.cgd.ucar.edu/Multi-Case/CMAT/CVDP/CVDP-B1850WmaCARMA/output/ Showing that CARMA has too many bright clouds, indicating that the clubb_gamma value was adjusted too much to counter the warming. Suggestions by John, to first perform F2000-case to get the model into a 0.8W/m2 imbalance and then start from a different / warmer ocean to spin up the model.
Two FWma2000 cases were performed, one using the default club_gamma value 0.28 and one using a larger club_gamma value, making the clouds less reflective:
FWma2000 restom plots in /glade/work/tilmes/CESM/plots clubb_gamma_0.28:
clubb_gamma_0.30
Conclusions, another case will be performed with clubb_gamma_0.29, to get closer to 0.8W/m2
Purpose of the simulation: Test first WACCM-MA CARMA 2deg B-case simulation to produce a Pre-Industrial Control and Historical simulation as a model to run climate simulations (into the future)!
I gradually changed the clubb_gamma coefficient from 0.28 to 0.25
CodeBase: /glade/work/fvitt/cesm/carmats16_cesm2.2/
Case dir: /glade/work/tilmes/derecho/carma/b.e21.B1850WmaCARMA.f19_g17.carmats16_cesm2.2.001
Currently 72 year: RESTOM:
Diagnostics: CARMA vs WACCM-MA MAM 2deg year 52-62: https://webext.cgd.ucar.edu/B1850WmaCARMA/atm/b.e21.B1850WmaCARMA.f19_g17.carmats16_cesm2.2.001_52_62_vs_b.e21.BWma1850.f19_g17.CMIP6-piControl-WACCM-MA-2deg.001_300_349/html_img/mean_diag_LatLon.html