Co-leads: Dave Bromwich (Ohio State University, USA) and Jim Renwick (Victoria University, New Zealand)

The goal of theme 2 is to assess the reliability and self-consistency of atmospheric and oceanic reanalyses in the polar regions in light of the comparatively limited observational at the poles. Metrics should be developed that reflect the coupling processes between the different components of the climate system, which can then inform the development of coupled reanalyses. Uncertainties in reanalyses should be investigated (e.g. by looking at increments) to determine whether they reflect biases in modelled processes.

This text was adapted from the PCPI proposal. We are waiting for input about next steps from the co-leads on this theme.