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An iterative time‐stepping scheme for the Met Office's semi‐implicit semi‐Lagrangian non‐hydrostatic model
Author(s) -
Diamantakis Michail,
Davies Terry,
Wood Nigel
Publication year - 2007
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.59
Subject(s) - time stepping , scheme (mathematics) , hydrostatic equilibrium , lagrangian , nonlinear system , computer science , mathematics , predictor–corrector method , mathematical optimization , control theory (sociology) , mathematical analysis , physics , artificial intelligence , quantum mechanics , discretization , control (management)
A predictor–corrector time‐stepping algorithm is used by the Met Office's semi‐implicit semi‐Lagrangian non‐hydrostatic Unified Model. This scheme is here extended to include an iterative option, improving performance when large time steps are used in highly nonlinear situations. The scheme is described, and results from global model tests, which show improvements in forecast accuracy, are presented. Copyright © 2007 Royal Meteorological Society