How do I investigate data for different temporal averaging periods? (e.g. months, seasons, 30-year time periods) ?

Averaging CDF data for different temporal averaging periods (e.g. months, seasons, and 30-year periods) is possible using the UKCP09 Sampled data or the 11-member RCM.

In detail

The Sampled data provided is temporally coherent with values presented for each 30-year time period as monthly, seasonal and annual means. As such, these values can be used to explore impacts, vulnerabilities and adaptation options across the year or for alternative user-defined set of months (e.g. growing season).

The values from the 11-member ensemble from the Met Office Hadley Centre RCM are temporally consistent, so the corresponding values from multiple time periods (in this case daily values) can be averaged to produce a single projection for a user-defined temporally averaging period. Users should be aware that the RCM does not incorporate as wide a range of uncertainties as the UKCP09 probabilistic projections. As the 11-member RCM data is not a UKCP09 product, users will have access to the data through the LINK project. There is little guidance to using this information beyond a limited reference within this user guidance, that in Chapter 5 of the Projections report and that on the LINK website.