Threshold Detector

The UKCP09 Threshold Detector (TD) is an online post-processing tool that can be applied to output from the Weather Generator.

In detail

The tool was developed following guidance from the UKCP09 Users’ Panel. The TD allows users to define their own basic weather events (or indices) made up of simple conditions such as temperatures or daily rainfall totals greater than a certain threshold. An example of this might be daily maximum temperatures in excess of 25°C.

• More details about the UKCP09 Threshold Detector are provided in the Reports & guidance section.

• An overview of how the Weather Generator works is provided in Chapter 1.3 of the UKCP09 Weather Generator report. Further discussion of the method is provided in Annex 1.3.