#include "WindSpd.h"
Go to the source code of this file.
Functions  
int  GetWindSpeedMpsFIXEDFromProps (ChHashTable * proptbl, double fbedhgtm, int month, int day, int hour, unsigned int row, unsigned int col, double * wspmps) 
retrieves time and space dependent windspeed, in m/s, at a cell. More...  
int  GetWindSpeedMpsRANDUFromProps (ChHashTable * proptbl, double fbedhgtm, int month, int day, int hour, unsigned int row, unsigned int col, double * wspmps) 
retrieves time and space dependent windspeed, in m/s, at a cell. More...  
int  GetWindSpeedMpsRANDHFromProps (ChHashTable * proptbl, double fbedhgtm, int month, int day, int hour, unsigned int row, unsigned int col, double * wspmps) 
retrieves time and space dependent windspeed, in m/s, at a cell. More...  
int  GetWindSpeedMpsSPATIALFromProps (ChHashTable * proptbl, double fbedhgtm, int month, int day, int hour, unsigned int row, unsigned int col, double * wspmps) 
retrieves time and space dependent windspeed, in m/s, at a cell. More...  
double  ConvertWindSpeedAtRefHgtToArbitraryHgt (double wsmps, double refhgtm, double hgtm) 
Given a windspeed at a reference height in m/s returns an adjusted windspeed at arbitrary height. More... 
This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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Definition in file WindSpd.c.

Given a windspeed at a reference height in m/s returns an adjusted windspeed at arbitrary height.
Given a windspeed argument assumed to be taken at a reference height (usu. 20 feet, height of RAWS Remote Automated Weather Station), returns the windspeed experienced at the height supplied as an argument. The formula used approximates a log profile and is described in (Albini and Baughman, 1979). The approach used here assumes the same logarithmic windspeed profile is valid for both daytime and nighttime. When correctinng windspeed for calculating dead fuel moisture, Rothermel (1986) suggests that the log profile is innapropriate during nighttime conditions. In addition, Beer (1990) suggests that the assumption of a logarithmic profile may be innapropriate when local atmospheric conditions are unstable. The macro WIND_SPD_REF_HGT_TO_MIDFLAME calls this function to retrieve the windspeed experienced in the distance halfway between the top of the fuel bed and the top of the flame above the fuel bed.




retrieves time and space dependent windspeed, in m/s, at a cell. Using this option each cell in the simulation domain is assigned the same windspeed based upon index into a table of historical values


retrieves time and space dependent windspeed, in m/s, at a cell. Using this option each cell in the simulation domain is assigned the same windspeed based upon random index into a table of historical values


retrieves time and space dependent windspeed, in m/s, at a cell. Using this option each cell in the simulation domain is assigned the same windspeed based upon a constrained uniform random number generating function


retrieves time and space dependent windspeed, in m/s, at a cell. Using this option each cell in the simulation domain is assigned a unique windspeed based upon index into a raster of windspeeds
