Abstract: This paper describes the principles adopted by the NASA Earth Science Enterprise in formulating a comprehensive 2002?2010 research strategy for earth system science, and outlines one component of this broad interdisciplinary ...

Abstract: Analysis of atmospheric data by assimilation of height and wind measurements into a general circulation model is routine in tropospheric analysis and numerical weather prediction. A stratospheric assimilation system has ...

Abstract: A three-dimensional simulation of the evolution of HNO3 has been run for the winter of 1979. Winds and temperatures are taken from a stratospheric data assimilation analysis, and the chemistry is based on Limb Infrared ...

Abstract: he United States has had three operational numerical weather prediction centers since the Joint Numerical Weather Prediction Unit was closed in 1958. This led to separate paths for U.S. numerical weather prediction, research, ...