<div dir="ltr">Hi,<div><br></div><div style>I'll try to answer up to my wits' end (inlines)</div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, May 23, 2013 at 2:17 PM, sittichai choosumrong <span dir="ltr"><<a href="mailto:sittichai.ocu@gmail.com" target="_blank">sittichai.ocu@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><div><div><div><div><br></div></div></div></div>
My question is, How can I create and get the values of the parameters as shows below;<br><br><dl><dt><b>model=</b>name
</dt><dd> Name of an
existing raster map layer in the user's current mapset search path containing
the standard fuel models defined by the USDA Forest Service. Valid values
are 1-13; other numbers are recognized as barriers by r.ros.</dd></dl></div></blockquote><div style>The fuel model, as stated, refers to the 13 standard fuel models defined by the USDA Forest Service. If you don't dispose of a fuel map, you can try to define the fuel by your expert judgement, with the help of this publication:</div>
<div style><a href="http://www.fs.fed.us/rm/pubs_int/int_gtr122.pdf">http://www.fs.fed.us/rm/pubs_int/int_gtr122.pdf</a></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div dir="ltr"><dl><dd>
</dd><dt><b>moisture_1h=</b>name
</dt><dd> Name of an existing raster map layer in
the user's current mapset search path containing the 1-hour (<.25")
fuel moisture (percentage content multiplied by 100).</dd></dl></div></blockquote><div style>This refers to moisture content in dead fuel. There are (fortunately) empirical formulas that relate this with the Fine Fuel Moisture Code (FFMC), which depends on temperature and relative humidity of the air. See the publications of the Canadian Forestry Service for further details.</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><dl><dd>
</dd><dt><b>moisture_10h=</b>name
</dt><dd>Name of an existing raster map layer in the
user's current mapset search path containing the 10-hour (.25-1") fuel
moisture (percentage content multiplied by 100).
</dd><dt><b>moisture_100h=</b>name
</dt><dd>Name of an existing raster map layer in the
user's current mapset search path containing the 100-hour (1-3") fuel moisture
(percentage content multiplied by 100).</dd></dl></div></blockquote><div style>These two are linked to the previous one by an empirical relationship, already implemented in GRASS, so that you may want to deduce only one of the three by the FFMC and let GRASS calculate for you the other two. Of course this doesn't apply in case you have plenty of information about the site in object and you want exploit them all. </div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><dl><dd>
</dd><dt><b>moisture_live=</b>name
</dt><dd>Name of an existing raster map layer in the
user's current mapset search path containing live (herbaceous) fuel fuel
moisture (percentage content multiplied by 100).</dd></dl></div></blockquote><div style>This refers to the moisture content in live fuel, and depends on the state of vegetation, which has a seasonal trend. It may vary from 50 in dry season up to 500 in wet season (in Europe!). But this parameter should really be calibrated on the basis of the vegetation present in the area and of the climatic region. </div>
<div style>Please note that this module isn't a mere calculation but the implementation of a model (Rothermel's) and it's based on other models (the ones you apply to get the fuel models and the other parameters), so that you will deal with uncertainties and all the implications that modelling implies.</div>
<div style><br></div><div style>Hope this helps,</div><div style>madi</div></div><div><br></div>-- <br><div><div><font color="#666666">Best regards,</font></div><div><font color="#666666"><br></font></div><div><font color="#666666">Margherita DI LEO </font></div>
<div><font color="#666666">Postdoctoral Researcher</font></div><div><font color="#666666"><br></font></div><div><font color="#666666">European Commission - DG JRC </font></div><div><font color="#666666">Institute for Environment and Sustainability (IES)</font></div>
<div><font color="#666666">Via Fermi, 2749</font></div><div><font color="#666666">I-21027 Ispra (VA) - Italy - TP 261</font></div><div><font color="#666666"> </font></div><div><font color="#666666">Tel. +39 0332 78 3600 </font></div>
<div><font color="#666666"><a href="mailto:margherita.di-leo@jrc.ec.europa.eu" target="_blank">margherita.di-leo@jrc.ec.europa.eu</a></font></div><div><font color="#666666"><br></font></div><div><font color="#666666">Disclaimer: The views expressed are purely those of the writer and may not in any circumstance be regarded as stating an official position of the European Commission.</font></div>
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