diff options
Diffstat (limited to 'R')
| -rw-r--r-- | R/PEC_sw_exposit_runoff.R | 16 |
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 |