Recent changes in the new medium-range forecast (MRF) model
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"On January 26, 1985, two modifications to the daily experimental runs of the new medium-range spectral model were simultaneously implemented; one was the use of "silhouette" mountains, the other a small correction of some aspects of the treatment of water vapor, to be referred to here as the virtual temperature correction. In addition to some before-and-after statistics, we will describe two cases of 120-hour forecasts in which parallel runs were made with and without modifications, so that comparisons are possible. In a run on January 9, we tested the new mountains only, while on January 24 both the mountains and the virtual temperature correction were tested"--first page, paragraph 1. 1985 NWS (National Weather Service) NCEP (National Centers for Environmental Prediction) Library Public Domain 2285
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2022-11-16
