Models, Feedbacks, And Propagation Of Error

Guest post by Kevin Kilty Introduction I had contemplated a contribution involving feedback diagrams, systems of equations, differential equations, and propagation of error ever since Nick Stoke’s original contribution about a system of differential equations involving feedback way back in June of this year. A couple of days ago the user Bartemis posted a pair…

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Remystifying Climate Feedback

By Joe Born 1. Introduction By presenting actual calculation results from a specific feedback-system example, the plots below will put some graphical meat on the verbal bones of Nick Stokes’ recent “Demystifying Feedback” post. I heartily agree with the main message I took from Mr. Stokes’ post: although some climate equations may be similar to…

Demystifying feedback.

Guest post by Nick Stokes, People outside climate science seem drawn to feedback analogies for climate behaviour. Climate scientists sometimes make use of them too, although they are not part of GCMs. But it gets tangled. In fact, all that the feedback talk is usually doing is describing the behaviour of variables that satisfy a…

Negative feedback? Declining sea ice to lead to cloudier Arctic

From the AGU weekly highlights Composite image. Data from MODIS. Credit: National Snow and Ice Data Center. See High Resolution Image Key Points: EFA method is valuable in providing quantitative assessment of feedback Decrease in sea ice leads to increase in cloud Further decline in sea ice will likely result in cloudier Arctic Arctic sea…