Modeling Southern Hemisphere Mid-latitude Precipitation Trends
Purich, A., Cowan, T., Min, S.-K. and Cai, W. 2013. Autumn precipitation trends over Southern hemisphere midlatitudes as simulated by CMIP5 models. Journal of Climate 26: 8341-8356.
The four researchers report their results showed that the CMIP5 models "underestimate both  the historical autumn poleward expansion of the subtropical dry zone and  the positive southern annular mode (SAM) trend." And they add that (3) a "multi-model ensemble was also unable to capture the spatial pattern of observed precipitation trends across semiarid mid-latitude regions." Thus, in terms of Purich et al.'s stated purpose for conducting the analyses they performed, the CMIP5 models were clearly not up to the task required of them.