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-rw-r--r--R/PEC_sw_exposit_runoff.R16
1 files changed, 11 insertions, 5 deletions
diff --git a/R/PEC_sw_exposit_runoff.R b/R/PEC_sw_exposit_runoff.R
index 22316bc..d4b2c90 100644
--- a/R/PEC_sw_exposit_runoff.R
+++ b/R/PEC_sw_exposit_runoff.R
@@ -42,7 +42,8 @@ rownames(perc_runoff_exposit) <- Koc_classes
#' @source Excel 3.02 spreadsheet available from
#' \url{https://www.bvl.bund.de/EN/04_PlantProtectionProducts/03_Applicants/04_AuthorisationProcedure/08_Environment/ppp_environment_node.html}
#'
-#' Agroscope version 3.01a with additional runoff factors for 3 m and 6 m buffer zones received from Muris Korkaric (not published)
+#' Agroscope version 3.01a with additional runoff factors for 3 m and 6 m buffer zones received from Muris Korkaric (not published).
+#' The variant 3.01a2 was introduced for consistency with previous calculations performed by Agroscope for a 3 m buffer zone.
#' @export
#' @examples
#' print(perc_runoff_reduction_exposit)
@@ -53,9 +54,12 @@ perc_runoff_reduction_exposit <- list(
row.names = c("No buffer", paste(c(5, 10, 20), "m"))),
"3.01a" = data.frame(
dissolved = c(0, 25, 40, 45, 60, 80),
- bound = c(0, 7.1, 13.3, 15.9, 25.7, 48),
- #bound = c(0, 30, 40, 55, 85, 95),
+ bound = c(0, 30, 40, 55, 85, 95),
row.names = c("No buffer", paste(c(3, 5, 6, 10, 20), "m"))),
+ "3.01a2" = data.frame(
+ dissolved = c(0, 25),
+ bound = c(0, 25),
+ row.names = c("No buffer", paste(c(3), "m"))),
"2.0" = data.frame(
dissolved = c(0, 97.5),
bound = c(0, 97.5),
@@ -74,7 +78,9 @@ perc_runoff_reduction_exposit <- list(
#' @param t_runoff The time between application and the runoff event, where degradation occurs, in days
#' @param exposit_reduction_version The version of the reduction factors to be used. "3.02" is the current
#' version used in Germany, "3.01a" is the version with additional percentages for 3 m and 6 m buffer
-#' zones used in Switzerland.
+#' zones used in Switzerland. "3.01a2" is a version introduced for consistency with previous calculations
+#' performed for a 3 m buffer zone in Switzerland, with the same reduction being applied to the dissolved
+#' and the bound fraction.
#' @param V_ditch The volume of the ditch is assumed to be 1 m * 100 m * 30 cm = 30 m3
#' @param V_event The unreduced runoff volume, equivalent to 10 mm precipitation on 1 ha
#' @param dilution The dilution factor
@@ -93,7 +99,7 @@ perc_runoff_reduction_exposit <- list(
#' PEC_sw_exposit_runoff(500, Koc = 150)
#' PEC_sw_exposit_runoff(600, Koc = 10000, DT50 = 195, exposit = "3.01a")
PEC_sw_exposit_runoff <- function(rate, interception = 0, Koc, DT50 = Inf, t_runoff = 3,
- exposit_reduction_version = c("3.02", "3.01a", "2.0"),
+ exposit_reduction_version = c("3.02", "3.01a", "3.01a2", "2.0"),
V_ditch = 30, V_event = 100, dilution = 2)
{
k_deg <- log(2)/DT50

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