I am having a query regarding the models agreement.
I am using 11 CMIP5 models for Ocean Potential temperature for historical period of 1980-2005 and RCP8.5 period of 2020-2100. I am having linear trend from all the models and linear trend of their ensemble mean. I want to highlight those regions where linear trend of 80% models agree in sign.
So the in my understanding this figure will look like Linear trend map of Ensemble Mean (in color) overlaid by the stippling of regions where 80% of models agree in sign.
I want to know how to compute this model agreement in sign. Hope I am clear with my query, if not please let me know.