The effect of increased horizontal resolution on synoptic forecasts with the GISS model of the global atmosphereThe improved horizontal resolution global circulation model in question has a horizontal spacing of 2.5 deg latitude by 3 deg longitude for a resolution of about 250 km in midlatitude. This paper reports on experiments to determine the improvements in forecasting skill and in initial conditions that were made possible by the ultrafine resolution and ultrafine assimilation. The size of the improvement in skill score when the ultrafine model is used for forecasting and assimilation was so large that 60-hour forecasts with the ultrafine model had as good a skill score as the 48-hour forecasts with the fine model. Synoptic evaluations confirmed that ultrafine model forecasts are better than the fine model forecasts.
Document ID
19780064870
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Quirk, W. J. (NASA Goddard Inst. for Space Studies New York, NY, United States)
Atlas, R. M. (NASA Goddard Institute for Space Studies New York, N.Y., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1977
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: Conference on Numerical Weather Prediction