LaRC. http://www.cmmap.org /. This Presentation. What is CMMAP? Science & Motivation History Organization Future plans The Grad Student Colloquium The CMMAP Team Meeting Expectations. CMMAP.
These processes interact strongly on the cloud scale, and also with larger scales.
“...The modeling of clouds is one of the weakest links in the general circulation modeling efforts.”
--Charney et al., National Academy Report, 1979
Deficiencies in the representation of cloud processes in climate models drive much of the uncertainty surrounding predictions of climate change.
This was true 30 years ago, it’s true now, and unless we adopt a new approach it will still be true 30 years from now.
Cloud-scale processses the general circulation modeling efforts.”
Relatively well understoodThe problem is multiple scales.
Bad news: Requires a very powerful computer.
Relatively well understood
Current global models include the effects of cloud processes on unresolved scales through “parameterizations,” which are statistical theories, analogous to thermodynamics.
At very high resolution, a realistic model should grow individual clouds.
A model that uses cloud parameterizations can’t do this.
Therefore, global models have to be reformulated when run at high resolution.
Super-Parameterization: individual clouds.
A Multiscale Modeling Framework
This idea was proposed and first tested by Wojciech Grabowski.
Required by NSF, but also a very good idea!
Total is $4M/year, likely for 10 years