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RCP8.5 rescue mission fail

Particularly egregious scenario misuse: "we use RCP8.5 runs from both C4MIP and the PPE to estimate the likely magnitude of carbon-cycle feedbacks in the other RCPs"

So despite what the figures say, only RCP8.5 is used - as a proxy for the other RCPs
This: "C4MIP provides emissions-driven RCP8.5 runs from 12 different CMIP5 models, but other RCPs were not run due to limited computational time and budget"

Our discussions of climate change are profoundly shaped by narrow priorities set based on "computational time and budget"
I often hear the excuse given for climate modeling narrow focus on RCP8.5 to be computing limitations
I don't buy it
Here is an example of a new model experiment using 6 GCMs (related to Greenland ice sheet)
Lots of room in there for other scenarios, no?
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