The LWKD Surface Boundary Layer Model: Version 8.10


  1. Forand, J.L.
Corporate Authors
Defence R&D Canada - Valcartier, Valcartier QUE (CAN)
The objective of this document is to bring readers up to date on the present state of DRDC Valcartier’s LWKD model. Many important changes have been made to the previously reported version (V7.09) and need to be documented. Apart from changes to the physical equations and the inputs to and outputs from the program, it is also necessary to document changes to the program’s development structure. As of version 7.51, the program is now being developed using Microsoft’s Visual C/C++ (version 6) environment and the code has been reformulated as object oriented code and documented using Rational Rose’s Computer Assisted Software Engineering (CASE) tool. The first chapter of the document highlights some of the important changes made since version 7.09. Chapter 2 discusses the set of scaling equations that are used in the LWKD model and how they have been modified, and the method used by LWKD to solve for the parameters of the scaling equations. Chapter 3 discusses how LWKD calculates the index of refractivity from the visible to the far infrared and for radio frequencies. Chapter 4 shows how LWKD determines various structure parameters, including the refractivity structure parameter. Chapter 5 describes the additions and changes to the program’s modes of operation and its new options, outputs and compilation modes, and Chapter 6 provides some conclusions.

Il y a un résumé en français ici.

Report Number
DRDC-VALCARTIER-TM-2007-467 — Technical Memorandum
Date of publication
01 Mar 2008
Number of Pages

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