Downscaling of NWP Data

Downscaling of NWP Data

Forecasters utilize downscaled NWP products when producing forecasts of predictable features, such as terrain-related and coastal features, at finer resolution than provided by most NWP models directly. This lesson is designed to help the forecaster determine which downscaled products are most appropriate for a given forecast situation and the types of further corrections the forecaster will have to create. This module engages the learner through interactive case examples illustrating and comparing the major capabilities and limitations of some commonly-used downscaled products for 2-m temperatures and 10-m winds. Products covered include Gridded MOS, PRISM, NCEP downscaling for NAM and for NAEFS, downscaling in the AWIPS Graphical Forecast Editor, and the use of high-resolution models to perform downscaling.