Experiment title 
: ACCESS-AM3 N96 2-year simulations 2007-2008, with markedly reduced RHcrit (0.5) and recompiled executables
Summary : These are sensitivity experiments to a previous experiment proposal and similar to these ones. I have run a control simulation AM3-N96 and a SST+4K simulation from 1982-2012 to investigate cloud feedback. Here I would like to investigate the sensitivity of model output to markedly reduced RHcrit (one control and one SST+4K), UMCM2-like parameter changes (one control and one SST+4K), and recompiled executables (one control). The year 2007 will be used as a spin-up, and 2008 for analysis. 2008 is chosen because it is a common period among CMIP5, CMIP6, and CloudSat-CALIPSO datasets.
Scientific motivation: Cloud feedback remains the leading source of uncertainty in estimating equilibrium climate sensitivity (ECS). Given large ECS in ACCESS-CM3 and UK models employing the latest UM, it is instrumental to investigate cloud responses to evolving environmental conditions in these models. Here we aim to elucidate the role of clouds in the model responses to radiative forcing.
Experiment Name : am3-control
People : Qinggang Gao
Model: ACCESS-AM3
Configuration: https://github.com/ACCESS-NRI/access-am3-configs
Initial conditions: Default
Run plan: 5 simulations, 2 years, N96 resolution
Simulation details: 2007, global
Total KSUs required : 22.5 KSU / year * 2 years * 5 simulations = 225 KSU
Total storage required : 70 GB / year * 2 years * 5 simulations = 700 GB
Outputs:/g/data/gx60/experiments/2026-03-04_am3-control/cylc-run/
Restarts: Default
Related articles:
Analysis:
Conclusion: