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- Response to panel recommendations (05/21/2015)
References
A unified convection scheme for CAM that unifies treatment of deep and shallow convection.
- Park (2014) A Unified Convection Scheme, UNICON. Part I. Formulation. Journal of the Atmospheric Sciences. DOI: 10.1175/JAS-D-13-0233.1
- Park (2014) A Unified Convection Scheme, UNICON. Part II. Simulation. Journal of the Atmospheric Sciences. DOI: 10.1175/JAS-D-13-0234.1
- Park (2014), An update on the CAM Unified Convection Scheme (UNICON), 10-12 February 2014 [Talk]
- Park (2013). Scale-adaptive physics parameterization. CESM Workshop, Breckenridge, 17 - 20 June 2013 [Talk].
Simulations
Updated 5/19/2015: UNICON provides three sets of simulations: set 1, set 2 and set 3.
- Set 1 was the first set of simulations submitted in December 2014.
- Set 2 was submitted in early January. It aims to reduce the enso amplitude and to improve the sea-ice. For consistency, the f2000 and famip have also been updated. There are indications that set 2 is producing a much larger climate sensitivity. Difference between 'Set 1' and 'Set 2' is the tuning of couple of parameters within uncertain range.
- Set 3 is the latest UNICON simulation. One of the goal of set 3 is to address the panel recommendations.
Set 3 are available in the table below.
| ID | Case Description | Diagnostics | Details/Comments | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| f2000_unicon | CAM standalone with climatological SSTs |
w/ obs w/ cam5.3 (5-year run) |
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| f2000_pia_unicon | CAM standalone with climatological SSTs + preindustrial aerosol |
w/ f2000_unicon | |||||||||
| famip_unicon | AMIP run |
w/ obs (yrs 1980-2004) |
NB: The cam5.3 didn't include COSP simulator. At the panel's request, we ran a 10-year simulation with COSP turned on. UNICON uses a kludge to run COSP. The variables CVCLIQ_COSP, CVCICE_COSP, RAIN_CV_COSP, SNOW_CV_COSP should be discarded. |
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| b1850_unicon | Coupled run Hybrid run started from large-ensemble at year 402 |
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| e1850_unicon_1xco2 | Slab Ocean Model + 1xCO2 |
timeseries w/ b1850_unicon |
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| e1850_unicon_2xco2 | Slab Ocean Model + 2xCO2 | timeseries w/ e1850_1xco2 |
Description of the code base and difference with CAM trunk
The UNICON simulations used code branched from cam5_3_23.
The description of the code is available on the UNICON tag description.
This document includes:
- list of the tuning parameters (different from CAM5 tuning) used in UNICON simulations
- list of changes unrelated to UNICON used in UNICON simulations
Timings
UNICON timings are available at Timing table
Response to the panel recommendations
The response from UNICON developer to the panel recommendation is available here.