<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px"><div id="yiv5600873772"><div id="yui_3_16_0_1_1434012154766_2980"><div id="yui_3_16_0_1_1434012154766_2979" style="color:#000;background-color:#fff;font-family:HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px;"><div id="yiv5600873772yui_3_16_0_1_1433944894019_11521"><div id="yui_3_16_0_1_1434012154766_3356"><span id="yiv5600873772yui_3_16_0_1_1433944894019_11638">Dear GRASS community,<br></span></div><div id="yui_3_16_0_1_1434012154766_3354"><span id="yiv5600873772yui_3_16_0_1_1433944894019_11638"><br></span></div><div id="yui_3_16_0_1_1434012154766_3351"><span id="yiv5600873772yui_3_16_0_1_1433944894019_11638">Hello, I am thrilled to find a number of promising modules under 'imagery' incorporated in the standard GRASS70 version. Specifically the "evapotranspiration calculation" modules have our special interest. Weren't they before addons?</span></div><span id="yiv5600873772yui_3_16_0_1_1433944894019_11638"></span><div id="yui_3_16_0_1_1434012154766_3055" dir="ltr">However I have some troubles to go through the complete calculation. The explanations on the manual pages are very (too) basic. For example, I got stuck at the "sensible heat flux calculation" that demands the "aerodynamic resistance to the heat momentum". I supposed an average value that I found on the web and created with r.mapcalc a raster with that value. But finally I got a raster with only 0 values.<br>Would it be possible to create a Wiki for this evaporation module with some examples? Or could someone direct me where I can get detailed advice?</div><div id="yui_3_16_0_1_1434012154766_3296" dir="ltr"><br></div><div id="yui_3_16_0_1_1434012154766_3348" dir="ltr">Thanks,</div><div id="yui_3_16_0_1_1434012154766_3346" dir="ltr"><br></div><div id="yui_3_16_0_1_1434012154766_3345" dir="ltr">Huub<br></div></div><div id="yiv5600873772yui_3_16_0_1_1433944894019_11559"> </div><div id="yiv5600873772yui_3_16_0_1_1433944894019_11553" class="yiv5600873772signature"><font id="yiv5600873772yui_3_16_0_1_1433944894019_11556" class="yiv5600873772Apple-style-span" face="arial, helvetica, sans-serif" size="2"><font id="yiv5600873772yui_3_13_0_1_1396344566582_10784" face="Arial" size="1"><span id="yiv5600873772yui_3_13_0_1_1396344566582_10783" style="font-size:7.5pt;font-family:arial;" lang="EN-GB">Huub Munstege<br></span></font><font id="yiv5600873772yui_3_16_0_1_1433944894019_11576" size="1">Bamako <br>Rép. du Mali</font><br><br></font><hr id="yui_3_16_0_1_1434012154766_3073" style="width:100%;height:2px;"></div></div></div></div></div></body></html>