[gradsusr] Wind-chill parameter GrADS -

[L.B.]

Hi Leopoldo,

I calculate windchill with the following equation:

'define chill =
35.74+0.6215*temp-35.75*pow(wnd,0.16)+0.4275*temp*pow(wnd,0.16)'

where temp is in degree Fahrenheit, and wnd is in mph. This equation
outputs windchills in Fahrenheit.

*William (L.B.) LaForce*
Meteorologist
Central Michigan University '13
www.tornadoinsanity.com


On Sat, Feb 22, 2014 at 2:41 PM, Leopoldo Alvarez <lap.bolsa at gmail.com>wrote:

>  Hi alls,
>
> I am trying to calculate the Windchill and i have used this expression ->
> http://www.wrfems.info/viewtopic.php?f=6&t=742
>
> 'tg2' is wind variable (KPH)
>
> 'define wis=pow((tg2),0.16)'
> 'define windchill = 13.112 + 0.6215*(t-273.15) - 11.37*wis +
> 0.3965*(t-273.15)*wis'
> 'd windchill'
>
> I find little difference, I wonder...
> It'll be well calculated.. Do you calculate the windchill otherwise ... ?
>
>  Date / wind (KPH) / temp (ºC) / windchill (ºC)
> 2014-FEB-19-13Z  27.5996  18.8929  18.2582
> 2014-FEB-19-14Z  31.2976  19.2836  18.6358
> 2014-FEB-19-15Z  31.2976  19.0446  18.3228
>
> Best regards,
>
> Leopoldo Álvarez
>
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