CSIRO Climate Science Centre Martin Dix Coupled climate modelling team In our last exciting episode PI control had just been restarted because of various aerosol related issues Option 1 minimal fixes ID: 809959
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Slide1
Update on ACCESS-CM2 CMIP6 simulations
CSIRO Climate Science Centre
Martin Dix
| Coupled climate modelling team
Slide2In our last exciting episode …
PI control had just been restarted because of various aerosol related issues
Option 1 minimal fixesOption 3 preferred version with some extra fixes
Martin Dix | Climate Science Centre
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Slide3New PI control (option 3)
Martin Dix | Climate Science Centre
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Official CMIP6 run starts at year 950
Slide4PI control drift compared to other CMIP6 models
Martin Dix | Climate Science Centre
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Slide5Current status
Martin Dix | Climate Science Centre
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In progress
PIcontrol
Historical r2 & r3
Will all complete before
raijin shutdown and gadi transition
Slide6Historical
Martin Dix | Climate Science Centre
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Anomalies relative to 1961-1990 mean
Control drift over historical period removed
Slide7Surface air temperature error wrt ERAi (Ian Watterson)
Martin Dix | Climate Science Centre
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ERA5
ACCESS 1.3
ACCESS
ESM 1.5
ACCESS CM2
HadGEM3-GC3.1
UKESM
Slide8Precipitation error
wrt ERAi (Ian Watterson)
Martin Dix | Climate Science Centre
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ERA5
ACCESS 1.3
ACCESS
ESM 1.5
ACCESS CM2
HadGEM3-GC3.1
UKESM
Slide9M score wrt
ERAi (Ian Watterson)
Martin Dix | Climate Science Centre
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ERA5
A-1.3
ESM15
A-CM2
HadGC3
UKESM
tas
977
923
926
923
928
918
pr
783
655
675
679
709
705
psl
971
845
849
826
834
834
Slide10SSPs
Single Column Model | Martin Dix
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CO2
CO
2
Slide11Idealised experiments: 1pctCO2 and 4xCO2
Single Column Model | Martin Dix
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Slide12Equilibrium climate sensitivity from 4xCO2
Single Column Model | Martin Dix
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Model
2xCO2 ECS
ACCESS ESM 1.5
3.8
ACCESS CM2
4.7
HadGEM3 GC3.1
5.2
Slide134xCO2
NH stops warming after about 80 years.
Old JULES run without ozone adjustment did the same thing (at the same time, not at the same warming)
Some ocean circulation change?
Single Column Model | Martin Dix
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SH
NH
Slide14Summary
Highest priority runs are complete
(except for last 90 years of piControl)Data almost ready for publishing on NCI ESG
Extra ensemble members and other MIP runs will be done on
gadi
We’ll release a standard configuration of model and suites on
gadiMay not be bit comparable to
rajiinSome interesting differences c.f. HadGEM3-GC3.1 we need to understand
Martin Dix | Climate Science Centre14 |