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<title>PEC_sw_drift. pfm 0.3-8</title>
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Johannes Ranke
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<h1>Calculate predicted environmental concentrations in surface water due to drift</h1>
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<div class="span8">
<h2>Usage</h2>
<pre><span class="functioncall"><a href='PEC_sw_drift.html'>PEC_sw_drift</a></span><span class="keyword">(</span><span class="symbol">rate</span><span class="keyword">,</span> <span class="argument">applications</span> <span class="argument">=</span> <span class="number">1</span><span class="keyword">,</span> <span class="argument">water_depth</span> <span class="argument">=</span> <span class="number">30</span><span class="keyword">,</span>
<span class="argument">drift_percentages</span> <span class="argument">=</span> NULL<span class="keyword">,</span> <span class="argument">drift_data</span> <span class="argument">=</span> <span class="string">"JKI"</span><span class="keyword">,</span> <span class="argument">crop</span> <span class="argument">=</span> <span class="string">"Ackerbau"</span><span class="keyword">,</span>
<span class="argument">distances</span> <span class="argument">=</span> <span class="functioncall"><a href='http://www.rdocumentation.org/packages/base/topics/c'>c</a></span><span class="keyword">(</span><span class="number">1</span><span class="keyword">,</span> <span class="number">5</span><span class="keyword">,</span> <span class="number">10</span><span class="keyword">,</span> <span class="number">20</span><span class="keyword">)</span><span class="keyword">,</span> <span class="argument">rate_units</span> <span class="argument">=</span> <span class="string">"g/ha"</span><span class="keyword">,</span> <span class="argument">PEC_units</span> <span class="argument">=</span> <span class="string">"µg/L"</span><span class="keyword">)</span></pre>
<h2>Arguments</h2>
<dl>
<dt>rate</dt>
<dd>Application rate in units specified below</dd>
<dt>applications</dt>
<dd>Number of applications for selection of drift percentile</dd>
<dt>water_depth</dt>
<dd>Depth of the water body in cm</dd>
<dt>drift_percentages</dt>
<dd>Percentage drift values for which to calculate PECsw.
'drift_data' and 'distances' if not NULL.</dd>
<dt>drift_data</dt>
<dd>Source of drift percentage data</dd>
<dt>crop</dt>
<dd>Crop name (use German names for JKI data), defaults to "Ackerbau"</dd>
<dt>distances</dt>
<dd>The distances in m for which to get PEC values</dd>
<dt>rate_units</dt>
<dd>Defaults to g/ha</dd>
<dt>PEC_units</dt>
<dd>Requested units for the calculated PEC. Only µg/L currently supported</dd>
</dl>
<div class="Value">
<h2>Value</h2>
<p><dl>
The predicted concentration in surface water
</dl></p>
</div>
<div class="Description">
<h2>Description</h2>
<p>This is a basic, vectorised form of a simple calculation of a contaminant
concentration in surface water based on complete, instantaneous mixing
with input via spray drift.</p>
</div>
<h2 id="examples">Examples</h2>
<pre class="examples"><div class='input'><span class="functioncall"><a href='PEC_sw_drift.html'>PEC_sw_drift</a></span><span class="keyword">(</span><span class="number">100</span><span class="keyword">)</span></div>
<div class='output'> 1 m 5 m 10 m 20 m
0.92333333 0.19000000 0.09666667 0.05000000
</div></pre>
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<h2>Author</h2>
Johannes Ranke
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