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Aggregated area

UKCP09 provides climate change projections for 25 km grid squares over the UK. An 'aggregated area' is a group of 25 km grid squares for which a single UKCP09 Probabilistic climate projection is available.

Please note that it is not possible to use UKCP09 data to create your own customised aggregated areas.

In detail

The probabilistic nature of the UKCP09 climate projections means that the projected changes at a particular probability level (for example, 90%) for multiple grid squares cannot simply be averaged together.

Projections in UKCP09 are given for three sets of aggregated areas (Administrative regions, River basins, over land and over the sea). In these cases probabilistic climate projections are provided as an average value across all UKCP09 25 km grid squares that comprise each aggregated area.