The effect of a gravity wave drag parameterization scheme on GLA fourth order GCM forecastsTen-day forecast experiments have been performed to determined whether the introduction of a simple orographic gravity wave drag scheme into a fourth-order GCM would reduce the climate drift of the fine resolution model and improve the model's medium range predictive skill. Error reduction due to the gravity waves is found in stratospheric predictions, where the improvement is confined mainly to the zonal mean component. Improvements are noted in the Northern Hemisphere climatology, where low level westerlies are weakened and shifted poleward, and in the Southern Hemisphere, where the roaring forties and fifties are better simulated.
Document ID
19880050777
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Helfand, H. M. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Jusem, J. C. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Pfaendtner, J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Tenenbaum, J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kalnay, E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: Short- and medium-range numerical weather prediction