Climate Scientists Encounter Limits of Computer Models, Bedeviling Policy – WSJ

The scientists soon concluded their new calculations had been thrown off kilter by the physics of clouds in a warming world, which may amplify or damp climate change. The old way is just wrong, we know that, said Andrew Gettelman, a physicist at NCAR who specializes in clouds and helped develop the CESM2 model. I think our higher sensitivity is wrong too. It s probably a consequence of other things we did by making clouds better and more realistic. You solve one problem and create another.

Since then the CESM2 scientists have been reworking their climate-change algorithms using a deluge of new information about the effects of rising temperatures to better understand the physics at work. They have abandoned their most extreme calculations of climate sensitivity, but their more recent projections of future global warming are still dire and still in flux.

via www.wsj.com

There’s lots of other evidence that the climate is warming. It might also be wrong, however. But it might not. But just say it’s not. Close enough. If you know what’s good for you.