Operational systematic error correction for the NMC operational medium range forecast model

"Recent improvements in NWP are due in part to a number of factors such as improved resolution, analysis, and physics, e.g., gravity wave drag, cloud and convection specification, to name a few. However, in spite of improvement NWP models still have significant errors, some of which occur systematically. Described in this presentation is a method to correct for such systematic errors as well as some options for the disposition of the output of statistically modified model forecasts"--Introduction. Jordan C. Alpert, Suranjana Saha. "This is an unreviewed manuscript, primarily intended for informal exchange of information among NMC staff members." "September 1989." System requirements: Adobe Acrobat Reader. Includes bibliographical references (page 8). 1989 NWS (National Weather Service) NCEP (National Centers for Environmental Prediction) Library Public Domain 2285