Documentation of the AFGL statistical analysis program (ASAP) for the global multivariate analysis of heights and winds
Abstract
The multivariate analysis of heights and winds is one of the key ingredients of any global data assimilation system (GDAS), e.g., McPherson et al. (1979), Lorenc (1981). The AFGL GDAS has been under development at AFGL/LYP for several years. In many respects, it parallels the NMC GDAS. A GDAS contains three main components: a forecast model, an analysis method and an initialization procedure. This document discusses only one part of the analysis method, namely, the multivariate statistical analysis of height and wind. Currently, the AFGL GDAS analyzes moisture in a separate program and does not analyze surface or sea level pressure. This documentation does not attempt to provide an overview of the entire AFGL GDAS or even of the entire height-wind analysis. These are provided by Norquist (1986b). The author's purpose is to describe the detailed workings of the height-wind analysis program ASAP1.
- Publication:
-
Unknown
- Pub Date:
- December 1986
- Bibcode:
- 1986afgl.rept.....H
- Keywords:
-
- Atmospheric Circulation;
- Computer Programs;
- Height;
- Multivariate Statistical Analysis;
- Numerical Weather Forecasting;
- Wind (Meteorology);
- Atmospheric Moisture;
- Atmospheric Pressure;
- Fortran;
- Geophysics;
- Interpolation;
- Optimization;
- Prediction Analysis Techniques;
- Geophysics