In the engineering version of the LSM, the atmospheric options are control fields, generated correlated meteorological fields or predefined phenomena fields. These options should be available in the global LSM sometime in 1998.
Control fields are wind fields of constant streamlines. The four control fields currently supported are pure translation, divergence, vorticity and deformation (Hess, 1979).
The meteorological field generator uses a filter function model ( Pratte and Lee, 1980) to generate correlated wind fields. The wind fields are computed by applying a filter function to a random field. The AGM allows the user to choose default fields (random, small correlation, medium correlation, strong correlation) or enter an user defined field.
The phenomena fields currently supported are a Hurricane, AVEVAS mesoscale wind field and a California jet. For technical support the user is referred for each phenomena field to, Houston and Emmitt (1986); Emmitt and Wood (1988); Emmitt (1987).
| This page managed by Sidney A. Wood | Last modified: 21 Feb. 1998 |