A physical subgrid-scale information exchange (PSIE) system for parametrization schemes in numerical weather prediction models

摘要

The choice and interaction of the parametrization schemes in a numerical weather prediction (NWP) model are crucial for the forecast quality. Because, classically, the parametrization schemes can only communicate to each other via the tendencies of the averaged grid-scale prognostic variables, a considerable amount of subgrid-scale information available within the schemes is lost.