EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Evaluating the adequacy-for-purpose of downscaling methods and products

Wendy Parker
Wendy Parker

How should downscaling methods, and the products of downscaling, be evaluated? An adequacy-for-purpose approach attempts to determine whether a method or product can be used successfully for specific purposes of interest. Purposes can take various forms: predicting variable X in region R with a specified level of accuracy, guiding a particular policy decision, etc. Depending on the purpose, different tests or checks will be performed and different levels of performance, on different metrics, will be deemed acceptable. A product that is grossly inaccurate in some respects may nevertheless be entirely adequate for the purpose at hand. Likewise, higher-resolution products are not necessarily more adequate (or fit); it depends on whether they provide the information required for the purpose of interest and in a way that can be interpreted and employed by users.

How to cite: Parker, W.: Evaluating the adequacy-for-purpose of downscaling methods and products, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-8086,, 2022.