Collaborative Climate Science: A User's Perspective on Need, Communication, and Adaptation
David Behar

State of the CESM
James Hurrell

Earth System Modeling in Deep Time
Lee Kump

Uncertainty in Weather and Climate Prediction
Julia Slingo

Towards IPCC AR5: The Physical Science Basis
Thomas Stocker

Better Science Through Better Software: CESM1 Software Engineering Improvements
Mariana Vertenstein

Summary and Discussion