From 06b528f0c19ca9f7a311612c0e9ae80c0d0c1d3f Mon Sep 17 00:00:00 2001 From: Johannes Ranke Date: Fri, 27 Oct 2017 18:15:29 +0200 Subject: Exposit runoff calculations for surface water --- docs/reference/PEC_sw_exposit_runoff.html | 187 ++++++++++++++++++++++++++++++ 1 file changed, 187 insertions(+) create mode 100644 docs/reference/PEC_sw_exposit_runoff.html (limited to 'docs/reference/PEC_sw_exposit_runoff.html') diff --git a/docs/reference/PEC_sw_exposit_runoff.html b/docs/reference/PEC_sw_exposit_runoff.html new file mode 100644 index 0000000..378c4e2 --- /dev/null +++ b/docs/reference/PEC_sw_exposit_runoff.html @@ -0,0 +1,187 @@ + + + + + + + + +Calculate PEC surface water due to runoff and erosion as in Exposit 3 — PEC_sw_exposit_runoff • pfm + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Calculate PEC surface water due to runoff and erosion as in Exposit 3

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+ + +

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.

+ + + 
PEC_sw_exposit_runoff(rate, Koc, DT50 = Inf, t_runoff = 3,
+  exposit_reduction_version = c("3.01", "2.0"), V_ditch = 30,
+  V_event = 100)
+ +

Arguments

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
rate

The application rate in g/ha

Koc

The sorption coefficient to soil organic carbon

DT50

The soil half-life in days

t_runoff

The time between application and the runoff event, where degradation occurs, in days

exposit_reduction_version

The version of the reduction factors to be used

V_ditch

The volume of the ditch is assumed to be 1 m * 100 m * 30 cm = 30 m3

V_event

The unreduced runoff volume, equivalent to 10 mm precipitation on 1 ha

+ +

Source

+ +

Excel 3.01 spreadsheet available from + https://www.bvl.bund.de/DE/04_Pflanzenschutzmittel/03_Antragsteller/04_Zulassungsverfahren/07_Naturhaushalt/psm_naturhaush_node.html#doc1400590bodyText3

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Value

+ +

A list containing the following components

+
Input

A matrix containing dissolved and bound input for the different distances

+
PEC_sw_runoo

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.

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See also

+ +

perc_runoff_exposit for runoff loss percentages and perc_runoff_reduction_exposit for runoff reduction percentages used

+ + +

Examples

+ 
  PEC_sw_exposit_runoff(500, 150)
#> $Rate
+#> [1] 500
+#> 
+#> $Koc
+#> [1] 150
+#> 
+#> $Input
+#>           dissolved   bound   total
+#> No buffer     1.240 0.00500 1.24500
+#> 5 m           0.744 0.00300 0.74700
+#> 10 m          0.496 0.00075 0.49675
+#> 20 m          0.248 0.00025 0.24825
+#> 
+#> $PEC_sw_runoff
+#>           dissolved       bound    total
+#> No buffer  4.769231 0.019230769 4.788462
+#> 5 m        4.133333 0.016666667 4.150000
+#> 10 m       3.542857 0.005357143 3.548214
+#> 20 m       2.480000 0.002500000 2.482500
+#>
+
+ +
+ + +
+ + + -- cgit v1.2.1