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authorJohannes Ranke <jranke@uni-bremen.de>2017-10-27 18:15:29 +0200
committerJohannes Ranke <jranke@uni-bremen.de>2017-10-27 18:15:29 +0200
commit06b528f0c19ca9f7a311612c0e9ae80c0d0c1d3f (patch)
tree4a848f6f825289cdd12d4ff10c26f582854cb792 /docs/reference/PEC_sw_exposit_runoff.html
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Exposit runoff calculations for surface water
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+ <h1>Calculate PEC surface water due to runoff and erosion as in Exposit 3</h1>
+ </div>
+
+
+ <p>This is a reimplementation of the calculation described in the Exposit 3.01 spreadsheet file,
+in the worksheet "Konzept Runoff". Calculation of sediment PEC values is not implemented.</p>
+
+
+ <pre class="usage"><span class='fu'>PEC_sw_exposit_runoff</span>(<span class='no'>rate</span>, <span class='no'>Koc</span>, <span class='kw'>DT50</span> <span class='kw'>=</span> <span class='fl'>Inf</span>, <span class='kw'>t_runoff</span> <span class='kw'>=</span> <span class='fl'>3</span>,
+ <span class='kw'>exposit_reduction_version</span> <span class='kw'>=</span> <span class='fu'>c</span>(<span class='st'>"3.01"</span>, <span class='st'>"2.0"</span>), <span class='kw'>V_ditch</span> <span class='kw'>=</span> <span class='fl'>30</span>,
+ <span class='kw'>V_event</span> <span class='kw'>=</span> <span class='fl'>100</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>Koc</th>
+ <td><p>The sorption coefficient to soil organic carbon</p></td>
+ </tr>
+ <tr>
+ <th>DT50</th>
+ <td><p>The soil half-life in days</p></td>
+ </tr>
+ <tr>
+ <th>t_runoff</th>
+ <td><p>The time between application and the runoff event, where degradation occurs, in days</p></td>
+ </tr>
+ <tr>
+ <th>exposit_reduction_version</th>
+ <td><p>The version of the reduction factors to be used</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_event</th>
+ <td><p>The unreduced runoff volume, equivalent to 10 mm precipitation on 1 ha</p></td>
+ </tr>
+ </table>
+
+ <h2 class="hasAnchor" id="source"><a class="anchor" href="#source"></a>Source</h2>
+
+ <p>Excel 3.01 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>Input</dt><dd><p>A matrix containing dissolved and bound input for the different distances</p></dd>
+ <dt>PEC_sw_runoo</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 /L.</p></dd>
+ </dl>
+
+
+ <h2 class="hasAnchor" id="see-also"><a class="anchor" href="#see-also"></a>See also</h2>
+
+ <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>
+
+
+ <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_runoff</span>(<span class='fl'>500</span>, <span class='fl'>150</span>)</div><div class='output co'>#&gt; $Rate
+#&gt; [1] 500
+#&gt;
+#&gt; $Koc
+#&gt; [1] 150
+#&gt;
+#&gt; $Input
+#&gt; dissolved bound total
+#&gt; No buffer 1.240 0.00500 1.24500
+#&gt; 5 m 0.744 0.00300 0.74700
+#&gt; 10 m 0.496 0.00075 0.49675
+#&gt; 20 m 0.248 0.00025 0.24825
+#&gt;
+#&gt; $PEC_sw_runoff
+#&gt; dissolved bound total
+#&gt; No buffer 4.769231 0.019230769 4.788462
+#&gt; 5 m 4.133333 0.016666667 4.150000
+#&gt; 10 m 3.542857 0.005357143 3.548214
+#&gt; 20 m 2.480000 0.002500000 2.482500
+#&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>
+
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