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authorJohannes Ranke <jranke@uni-bremen.de>2019-02-19 12:27:00 +0100
committerJohannes Ranke <jranke@uni-bremen.de>2019-02-19 12:27:00 +0100
commit72c56f4246966c1bea627f601cf3cc457734f023 (patch)
tree7e08e8440129cda3ea8280a6c6934618d93a1594 /docs/reference/PEC_sw_exposit_drainage.html
parente5a077e28153f6494c99d6945b8b1bd239464609 (diff)
Add German drainage calculations using Exposit 3.02
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+<meta property="og:description" content="This is a reimplementation of the calculation described in the Exposit 3.02 spreadsheet file,
+in the worksheet &quot;Konzept Drainage&quot;. Although there are four groups of
+compounds (&quot;Gefährdungsgruppen&quot;), only one distinction is made in the
+calculations, between compounds with low mobility (group 1) and compounds
+with modest to high mobility (groups 2, 3 and 4). In this implementation,
+the group is derived only from the Koc, if not given explicitly. For
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+ <h1>Calculate PEC surface water due to drainage as in Exposit 3</h1>
+ <small class="dont-index">Source: <a href='https://github.com/jranke/pfm/blob/master/R/PEC_sw_exposit_runoff.R'><code>R/PEC_sw_exposit_runoff.R</code></a></small>
+ <div class="hidden name"><code>PEC_sw_exposit_drainage.Rd</code></div>
+ </div>
+
+ <div class="ref-description">
+
+ <p>This is a reimplementation of the calculation described in the Exposit 3.02 spreadsheet file,
+in the worksheet "Konzept Drainage". Although there are four groups of
+compounds ("Gefährdungsgruppen"), only one distinction is made in the
+calculations, between compounds with low mobility (group 1) and compounds
+with modest to high mobility (groups 2, 3 and 4). In this implementation,
+the group is derived only from the Koc, if not given explicitly. For
+details, see the discussion of the function arguments below.</p>
+
+ </div>
+
+ <pre class="usage"><span class='fu'>PEC_sw_exposit_drainage</span>(<span class='no'>rate</span>, <span class='kw'>interception</span> <span class='kw'>=</span> <span class='fl'>0</span>, <span class='kw'>Koc</span> <span class='kw'>=</span> <span class='fl'>NA</span>,
+ <span class='kw'>mobility</span> <span class='kw'>=</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/c'>c</a></span>(<span class='fl'>NA</span>, <span class='st'>"low"</span>, <span class='st'>"high"</span>), <span class='kw'>DT50</span> <span class='kw'>=</span> <span class='fl'>Inf</span>, <span class='kw'>t_drainage</span> <span class='kw'>=</span> <span class='fl'>3</span>,
+ <span class='kw'>V_ditch</span> <span class='kw'>=</span> <span class='fl'>30</span>, <span class='kw'>V_drainage</span> <span class='kw'>=</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/c'>c</a></span>(<span class='kw'>spring</span> <span class='kw'>=</span> <span class='fl'>10</span>, <span class='kw'>autumn</span> <span class='kw'>=</span> <span class='fl'>100</span>),
+ <span class='kw'>dilution</span> <span class='kw'>=</span> <span class='fl'>2</span>)</pre>
+
+ <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2>
+ <table class="ref-arguments">
+ <colgroup><col class="name" /><col class="desc" /></colgroup>
+ <tr>
+ <th>rate</th>
+ <td><p>The application rate in g/ha</p></td>
+ </tr>
+ <tr>
+ <th>interception</th>
+ <td><p>The fraction intercepted by the crop</p></td>
+ </tr>
+ <tr>
+ <th>Koc</th>
+ <td><p>The sorption coefficient to soil organic carbon used to determine the mobility. A trigger
+value of 550 L/kg is used in order to decide if Koc &gt;&gt; 500.</p></td>
+ </tr>
+ <tr>
+ <th>mobility</th>
+ <td><p>Overrides what is determined from the Koc.</p></td>
+ </tr>
+ <tr>
+ <th>DT50</th>
+ <td><p>The soil half-life in days</p></td>
+ </tr>
+ <tr>
+ <th>t_drainage</th>
+ <td><p>The time between application and the drainage event, where degradation occurs, in days</p></td>
+ </tr>
+ <tr>
+ <th>V_ditch</th>
+ <td><p>The volume of the ditch is assumed to be 1 m * 100 m * 30 cm = 30 m3</p></td>
+ </tr>
+ <tr>
+ <th>V_drainage</th>
+ <td><p>The drainage volume, equivalent to 1 mm precipitation on 1 ha for spring/summer or 10 mm for
+autumn/winter/early spring.</p></td>
+ </tr>
+ <tr>
+ <th>dilution</th>
+ <td><p>The dilution factor</p></td>
+ </tr>
+ </table>
+
+ <h2 class="hasAnchor" id="source"><a class="anchor" href="#source"></a>Source</h2>
+
+ <p>Excel 3.02 spreadsheet available from
+ <a href='https://www.bvl.bund.de/DE/04_Pflanzenschutzmittel/03_Antragsteller/04_Zulassungsverfahren/07_Naturhaushalt/psm_naturhaush_node.html#doc1400590bodyText3'>https://www.bvl.bund.de/DE/04_Pflanzenschutzmittel/03_Antragsteller/04_Zulassungsverfahren/07_Naturhaushalt/psm_naturhaush_node.html#doc1400590bodyText3</a></p>
+
+ <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2>
+
+ <p>A list containing the following components</p><dl class='dl-horizontal'>
+ <dt>perc_runoff</dt><dd><p>The runoff percentages for dissolved and bound substance</p></dd>
+ <dt>runoff</dt><dd><p>A matrix containing dissolved and bound input for the different distances</p></dd>
+ <dt>PEC_sw_runoff</dt><dd><p>A matrix containing PEC values for dissolved and bound substance
+ for the different distances. If the rate was given in g/ha, the PECsw are in microg/L.</p></dd>
+ </dl>
+
+
+ <h2 class="hasAnchor" id="see-also"><a class="anchor" href="#see-also"></a>See also</h2>
+
+ <div class='dont-index'><p><code><a href='perc_runoff_exposit.html'>perc_runoff_exposit</a></code> for runoff loss percentages and <code><a href='perc_runoff_reduction_exposit.html'>perc_runoff_reduction_exposit</a></code> for runoff reduction percentages used</p></div>
+
+
+ <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
+ <pre class="examples"><div class='input'> <span class='fu'>PEC_sw_exposit_drainage</span>(<span class='fl'>500</span>, <span class='kw'>Koc</span> <span class='kw'>=</span> <span class='fl'>150</span>)</div><div class='output co'>#&gt; $perc_drainage_total
+#&gt; spring autumn
+#&gt; 0.2 1.0
+#&gt;
+#&gt; $perc_peak
+#&gt; spring autumn
+#&gt; 12.5 25.0
+#&gt;
+#&gt; $PEC_sw_drainage
+#&gt; spring autumn
+#&gt; 1.562500 4.807692
+#&gt; </div></pre>
+ </div>
+ <div class="col-md-3 hidden-xs hidden-sm" id="sidebar">
+ <h2>Contents</h2>
+ <ul class="nav nav-pills nav-stacked">
+ <li><a href="#arguments">Arguments</a></li>
+
+ <li><a href="#source">Source</a></li>
+
+ <li><a href="#value">Value</a></li>
+
+ <li><a href="#see-also">See also</a></li>
+
+ <li><a href="#examples">Examples</a></li>
+ </ul>
+
+ </div>
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