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Single-Precision in the Tangent-Linear and Adjoint Models of Incremental 4D-Var

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AbstractThe 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 reduc... Click to show full abstract

AbstractThe 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 reduc...

Keywords: adjoint models; linear adjoint; single precision; precision tangent; precision; tangent linear

Journal Title: Monthly Weather Review
Year Published: 2020

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