Single-precision in the tangent-linear and adjoint models of incremental 4D-VAr

Single-precision in the tangent-linear and adjoint models of incremental 4D-VAr

The use of single-precision arithmetic in ECMWF’s forecasting model gave a 40% reduction in wall-clock time over double-precision, with no decrease in forecast quality. However, using reduced-precision in 4D-Var data assimilation is relatively unexplored and there are potential issues with using sin...

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Bibliografiske detaljer
Main Authors:	Hatfield, S, McRae, A, Palmer, T, Düben, P
Format:	Journal article
Sprog:	English
Udgivet:	American Meteorological Society 2020

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