[GRASS-SVN] r59349 - in grass-addons/grass7/imagery: i.eb.h_sebal95 i.eb.z0m i.evapo.potrad i.evapo.senay i.evapo.zk
svn_grass at osgeo.org
svn_grass at osgeo.org
Wed Mar 26 03:29:00 PDT 2014
Author: neteler
Date: 2014-03-26 03:29:00 -0700 (Wed, 26 Mar 2014)
New Revision: 59349
Modified:
grass-addons/grass7/imagery/i.eb.h_sebal95/i.eb.h_sebal95.html
grass-addons/grass7/imagery/i.eb.z0m/i.eb.z0m.html
grass-addons/grass7/imagery/i.evapo.potrad/i.evapo.potrad.html
grass-addons/grass7/imagery/i.evapo.senay/i.evapo.senay.html
grass-addons/grass7/imagery/i.evapo.zk/i.evapo.zk.html
Log:
i.eb.*/i.evapo.* manuals: some HTML cleanup; references added (trac #899)
Modified: grass-addons/grass7/imagery/i.eb.h_sebal95/i.eb.h_sebal95.html
===================================================================
--- grass-addons/grass7/imagery/i.eb.h_sebal95/i.eb.h_sebal95.html 2014-03-26 10:24:39 UTC (rev 59348)
+++ grass-addons/grass7/imagery/i.eb.h_sebal95/i.eb.h_sebal95.html 2014-03-26 10:29:00 UTC (rev 59349)
@@ -1,27 +1,8 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-<h2>NAME</h2> <I>i.eb.h_sebal95 </I>- computation of <i>sensible heat flux</i> [W/m2] after Bastiaanssen, 1995 in [1].
-
-<p><I>(GRASS Raster Program)</I>
-
-<h2>SYNOPSIS</h2>
-<b>i.eb.h_sebal95</b>
-<br>
-
-<b>i.eb.h_sebal95</b> help
-<br>
-
-<b>i.eb.h_sebal95</b> <b>[ -qzn ]</b>
-
-<b>DEM</b>=name
-<b>T</b>=name
-<b>RH</b>=name
-<b>WS</b>=name
-<b>NSR</b>=name
-<b>Vh</b>=name
-<b>ETP</b>=name
-
<h2>DESCRIPTION</h2>
+<i>i.eb.h_sebal95 </i> computes the <i>sensible heat flux</i> [W/m2]
+after Bastiaanssen, 1995 in [1].
+
<p><em>i.eb.h_sebal95</em> given the vegetation height (hc), humidity (RU),
wind speed at two meters height (WS), temperature (T), digital terrain model (DEM),
and net radiation (NSR) raster input maps,
@@ -34,7 +15,9 @@
problems. The usage of the flag -n detect that the module is run in night hours
and the appropriate soil heat flux is calculated.
-<p>The algorithm implements well known approaches: the hourly Penman-Monteith method as presented in Allen et al. (1998) for land surfaces and the Penman method (Penman, 1948) for water surfaces.<br>
+<p>The algorithm implements well known approaches: the hourly
+Penman-Monteith method as presented in Allen et al. (1998) for land
+surfaces and the Penman method (Penman, 1948) for water surfaces.<br>
<p>Land and water surfaces are idenfyied by Vh:<br>
- where Vh less than 0 vegetation is present and evapotranspiration is calculated;<br>
@@ -44,28 +27,6 @@
<p>For more details on the algorithms see [1].
-<h2>OPTIONS</h2>
-
-The program will run non-interactively if the user specifies program
-arguments and flag settings on the command line using the following
-form:
-
-<p><b>i.eb.h_sebal95</b> <b>[ -qzd ]</b>
-<b>DEM</b>=name
-<b>T</b>=name
-<b>RH</b>=name
-<b>WS</b>=name
-<b>NSR</b>=name
-<b>Vh</b>=name
-<b>ETP</b>=name
-
-
-
-<p>Alternatively, the user can simply type <em>i.eb.h_sebal95</em> on the
-command line and the program will ask for parameter values and flag
-settings interactively, using the standard GRASS parser interface.
-
-
<h3>Parameters:</h3>
<dl>
<dt><b>DEM</b>=<I>name</I>
@@ -94,8 +55,9 @@
<h2>NOTES</h2>
-<p>Net solar radiation map in MJ/(m2*h) can be computed from the combination of the <em>r.sun<em>,
-run in mode 1, and the r.mapcalc commands.
+<p>Net solar radiation map in MJ/(m2*h) can be computed from the
+combination of the <em>r.sun<em>, run in mode 1, and the r.mapcalc
+commands.
<p>The sum of the three radiation components outputted by r.sun (beam, diffuse, and reflected)
multiplied by the Wh to Mj conversion factor (0.0036) and optionally by a
@@ -115,18 +77,6 @@
<a href=i.evapo.pm.html>i.evapo.pm</a>
</ul>
-
-
-<h2>AUTHORS</h2>
- <p>
- <i>
- <br>Yann Chemin
- <br>International Rice Research Institute, Los Banos, The Philippines.
- <br>International Water management Institute, Colombo, Sri Lanka.
- </i>
- <p>Contact: <a href="mailto:y.chemin at cgiar.org"> Yann chemin</a>
-
-
<h2>REFERENCES</h2>
<p>[1] Bastiaanssen, W.G.M., 1995.
@@ -140,3 +90,13 @@
<p>[3] Penman, H. L. 1948. Natural evaporation from open water,
bare soil and grass. Proc. Roy. Soc. London, A193, pp. 120-146.
+
+<h2>AUTHOR</h2>
+ <p>
+ <i>
+ <br>Yann Chemin
+ <br>International Rice Research Institute, Los Banos, The Philippines.
+ <br>International Water management Institute, Colombo, Sri Lanka.
+ </i>
+ <p>Contact: <a href="mailto:y.chemin at cgiar.org"> Yann chemin</a>
+
Modified: grass-addons/grass7/imagery/i.eb.z0m/i.eb.z0m.html
===================================================================
--- grass-addons/grass7/imagery/i.eb.z0m/i.eb.z0m.html 2014-03-26 10:24:39 UTC (rev 59348)
+++ grass-addons/grass7/imagery/i.eb.z0m/i.eb.z0m.html 2014-03-26 10:29:00 UTC (rev 59349)
@@ -1,14 +1,22 @@
<h2>DESCRIPTION</h2>
-<em>i.eb.z0m</em> calculates the momentum roughness length (z0m) and optionally the surface roughness for heat transport (z0h) as per SEBAL requirements from bastiaanssen (1995).
+<em>i.eb.z0m</em> calculates the momentum roughness length (z0m) and
+optionally the surface roughness for heat transport (z0h) as per
+SEBAL requirements from Bastiaanssen (1995).
+
Default: calculating from a NDVI with an deterministic equation, as seen in Bastiaanssen (1995).
+
Flag -p : calculating from a SAVI with an empirical equation, as seen in Pawan (2004).
+
This is a typical input to sensible heat flux computations of any energy balance modeling.
<h2>NOTES</h2>
-The NDVI map input and the ndvi_max operation set, is only to get a linear relationship from NDVI to vegetation height. The latter being related to z0m by a factor 7.
+The NDVI map input and the ndvi_max operation set, is only to get a
+linear relationship from NDVI to vegetation height. The latter being
+related to z0m by a factor 7.
If you happen to have a vegetation height (hv) map, then z0m=hv/7 and z0h=0.1*z0m.
+
<h2>TODO</h2>
@@ -19,10 +27,25 @@
</em>
-<h2>AUTHORS</h2>
+<h2>REFERENCES</h2>
+
+<ul>
+<li>Bastiaanssen, W.G.M., 1995. Regionalization of surface flux
+densities and moisture indicators in composite terrain; a remote
+sensing approach under clear skies in mediterranean climates. PhD
+thesis, Wageningen Agricultural Univ., The Netherland, 271 pp.
+(<a href="http://edepot.wur.nl/206553">PDF</a>)</li>
+
+<li>Chemin, Y., 2012.
+A Distributed Benchmarking Framework for Actual ET Models,
+in: Irmak, A. (Ed.), Evapotranspiration - Remote Sensing and Modeling. InTech.
+(<a href="http://www.intechopen.com/books/evapotranspiration-remote-sensing-and-modeling/a-distributed-benchmarking-framework-for-actual-et-models">PDF</a>)</li>
+</ul>
+
+
+<h2>AUTHOR</h2>
+
Yann Chemin
-<br>
-
<p>
-<i>Last changed: 2013-06-29</i>
+<i>Last changed: $Date$</i>
Modified: grass-addons/grass7/imagery/i.evapo.potrad/i.evapo.potrad.html
===================================================================
--- grass-addons/grass7/imagery/i.evapo.potrad/i.evapo.potrad.html 2014-03-26 10:24:39 UTC (rev 59348)
+++ grass-addons/grass7/imagery/i.evapo.potrad/i.evapo.potrad.html 2014-03-26 10:29:00 UTC (rev 59349)
@@ -1,13 +1,20 @@
<h2>DESCRIPTION</h2>
-<em>i.evapo.potrad</em> Calculates the diurnal potential evapotranspiration after bastiaanssen (1995). This is converting all Net radiation from the diurnal period into ET.
-It takes input maps of Albedo, surface skin temperature, latitude, day of year, single-way transmissivity and takes input value of the density of fresh water.
+<em>i.evapo.potrad</em> calculates the diurnal potential
+evapotranspiration after Bastiaanssen (1995). This is converting all
+Net radiation from the diurnal period into ET. It takes input maps
+of Albedo, surface skin temperature, latitude, day of year,
+single-way transmissivity and takes input value of the density of
+fresh water.
The "-r" flag permits output map of Diurnal net radiation to use in r.eb.eta.
-The "-b" flag permits a generic longwave balance calculation from surface emissivity, Air Temperature and a value of apparent atmospheric emissivity.
+The "-b" flag permits a generic longwave balance calculation from
+surface emissivity, Air Temperature and a value of apparent
+atmospheric emissivity.
-The "-d" flag is a slope/aspect correction, not really tested, reports and tests are most welcome.
+The "-d" flag is a slope/aspect correction, not really tested,
+reports and tests are most welcome.
<h2>NOTES</h2>
@@ -23,10 +30,24 @@
</em>
-<h2>AUTHORS</h2>
+<h2>REFERENCES</h2>
+<ul>
+<li>Bastiaanssen, W.G.M., 1995. Regionalization of surface flux
+densities and moisture indicators in composite terrain; a remote
+sensing approach under clear skies in mediterranean climates. PhD
+thesis, Wageningen Agricultural Univ., The Netherland, 271 pp.
+(<a href="http://edepot.wur.nl/206553">PDF</a>)</li>
+</ul>
+
+<p>Chemin, Y., 2012.
+A Distributed Benchmarking Framework for Actual ET Models,
+in: Irmak, A. (Ed.), Evapotranspiration - Remote Sensing and Modeling. InTech.
+(<a href="http://www.intechopen.com/books/evapotranspiration-remote-sensing-and-modeling/a-distributed-benchmarking-framework-for-actual-et-models">PDF</a>)
+
+<h2>AUTHOR</h2>
+
Yann Chemin, International Rice Research Institute, The Philippines<br>
-
<p>
<i>Last changed: $Date$</i>
Modified: grass-addons/grass7/imagery/i.evapo.senay/i.evapo.senay.html
===================================================================
--- grass-addons/grass7/imagery/i.evapo.senay/i.evapo.senay.html 2014-03-26 10:24:39 UTC (rev 59348)
+++ grass-addons/grass7/imagery/i.evapo.senay/i.evapo.senay.html 2014-03-26 10:29:00 UTC (rev 59349)
@@ -1,21 +1,32 @@
<h2>DESCRIPTION</h2>
-<em>i.evapo.SENAY</em> Calculates the diurnal actual evapotranspiration after Senay (2007). This is converting all Net radiation from the diurnal period into ET, then uses Senay equation for evaporative fraction.
-
-It takes input maps of Albedo, surface skin temperature, latitude, day of year, single-way transmissivity and takes input value of the density of fresh water.
-
+<em>i.evapo.senay</em> Calculates the diurnal actual
+evapotranspiration after Senay (2007). This is converting all Net
+radiation from the diurnal period into ET, then uses Senay equation
+for evaporative fraction.
+<p>
+It takes input maps of Albedo, surface skin temperature, latitude,
+day of year, single-way transmissivity and takes input value of the
+density of fresh water.
+<p>
DEM is used for calculating min and max temperature for Senay equation.
-
+<p>
The "-s" flag permits output map of evaporative fraction from Senay.
-
<h2>NOTES</h2>
-If you are trying to map irrigated crops, and you know there is at least one crop pixel that is evapotranspiring at maximum (ETa=ETpot), then read this.
+If you are trying to map irrigated crops, and you know there is at least
+one crop pixel that is evapotranspiring at maximum (ETa=ETpot), then read this.
+<p>
+<em>i.evapo.senay</em> is highly dependent on the wet pixel being
+the lowest temperature in the crop pixels to work for non water
+stressed crops, force it that way, even if it breaks non crop areas.
+I suggest you reduce your region to the irrigation system
+boundaries, checking that it includes a bit of dry area for the
+hot/dry pixel.
+<p>
+Since it is a direct relationship to LST, evaporative fraction can
+be very sensitive to the kind of pixel sample you feed it with.
-i.evapo.SENAY is highly dependent on the wet pixel being the lowest temperature in the crop pixels to work for non water stressed crops, force it that way, even if it breaks non crop areas. I suggest you reduce your region to the irrigation system boundaries, checking that it includes a bit of dry area for the hot/dry pixel.
-
-Since it is a direct relationship to LST, evaporative fraction can be very sensitive to the kind of pixel sample you feed it with.
-
<h2>TODO</h2>
@@ -30,8 +41,20 @@
</em>
-<h2>AUTHORS</h2>
+<h2>REFERENCES</h2>
+<ul>
+<li>Senay 2007</li>
+</ul>
+
+<p>Chemin, Y., 2012.
+A Distributed Benchmarking Framework for Actual ET Models,
+in: Irmak, A. (Ed.), Evapotranspiration - Remote Sensing and Modeling. InTech.
+(<a href="http://www.intechopen.com/books/evapotranspiration-remote-sensing-and-modeling/a-distributed-benchmarking-framework-for-actual-et-models">PDF</a>)
+
+
+<h2>AUTHOR</h2>
+
Yann Chemin, International Rice Research Institute, The Philippines.<br>
Modified: grass-addons/grass7/imagery/i.evapo.zk/i.evapo.zk.html
===================================================================
--- grass-addons/grass7/imagery/i.evapo.zk/i.evapo.zk.html 2014-03-26 10:24:39 UTC (rev 59348)
+++ grass-addons/grass7/imagery/i.evapo.zk/i.evapo.zk.html 2014-03-26 10:29:00 UTC (rev 59349)
@@ -2,10 +2,6 @@
<em>i.evapo.zk</em> Calculates the global diurnal evapotranspiration after Zhang, Kimball, Nemani and Running (2010).
-Zhang, K., Kimball, J.S., Nemani, R.R., Running, S.W. (2010). A continuous satellite-derived global record of land surface evapotranspiration from 1983 to 2006. WRR 46, W09522
-
-
-
<h2>NOTES</h2>
<em>Main function</em>
@@ -91,8 +87,21 @@
</em>
-<h2>AUTHORS</h2>
+<h2>REFERENCES</h2>
+Zhang, K., Kimball, J.S., Nemani, R.R., Running, S.W. (2010). A
+continuous satellite-derived global record of land surface evapotranspiration
+from 1983 to 2006. WRR 46, W09522
+
+<p>
+Chemin, Y., 2012.
+A Distributed Benchmarking Framework for Actual ET Models,
+in: Irmak, A. (Ed.), Evapotranspiration - Remote Sensing and Modeling. InTech.
+(<a href="http://www.intechopen.com/books/evapotranspiration-remote-sensing-and-modeling/a-distributed-benchmarking-framework-for-actual-et-models">PDF</a>)
+
+
+<h2>AUTHOR</h2>
+
Yann Chemin, GRASS Development team, 2011<br>
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