calcYields: calcYields

In pik-piam/mrland: MadRaT land data package

calcYields

Description

This function extracts yields from LPJmL and transforms them to MAgPIE crops calibrating proxy crops to FAO yields. Optionally, ISIMIP yields can be returned.

Usage

calcYields(
  source = c(lpjml = "ggcmi_phase3_nchecks_9ca735cb", isimip = NULL),
  climatetype = "GSWP3-W5E5:historical",
  cells = "lpjcell",
  selectyears = seq(1965, 2100, by = 5),
  weighting = "totalCrop",
  multicropping = FALSE,
  indiaYields = FALSE,
  scaleFactor = 0.3,
  marginal_land = "magpie"
)

Arguments

source	Defines LPJmL version for main crop inputs and isimip replacement. For isimip choose crop model/gcm/rcp/co2 combination formatted like this: "yields:EPIC-IIASA:ukesm1-0-ll:ssp585:default:3b"
climatetype	Switch between different climate scenarios
cells	if cellular is TRUE: "magpiecell" for 59199 cells or "lpjcell" for 67420 cells
selectyears	Years to be returned
weighting	use of different weights (totalCrop (default), totalLUspecific, cropSpecific, crop+irrigSpecific, avlCropland, avlCropland+avlPasture)
multicropping	Multicropping activated (TRUE) or not (FALSE) and Multiple Cropping Suitability mask selected (mask can be: "none": no mask applied (only for development purposes) "actual:total": currently multicropped areas calculated from total harvested areas and total physical areas per cell from readLandInG "actual:crop" (crop-specific), "actual:irrigation" (irrigation-specific), "actual:irrig_crop" (crop- and irrigation-specific), "potential:endogenous": potentially multicropped areas given temperature and productivity limits "potential:exogenous": potentially multicropped areas given GAEZ suitability classification) (e.g. TRUE:actual:total; TRUE:none; FALSE)
indiaYields	if TRUE returns scaled yields for rainfed crops in India
scaleFactor	integer value by which indiaYields will be scaled
marginal_land	Defines which share of marginal land should be included (see options below) and whether suitable land under irrigated conditions ("irrigated"), under rainfed conditions ("rainfed") or suitability under rainfed conditions including currently irrigated land (rainfed_and_irrigated) should be used. Options combined via ":" The different marginal land options are: "all_marginal": All marginal land (suitability index between 0-0.33) is included as suitable "q33_marginal": The bottom tertile (suitability index below 0.13) of the marginal land area is excluded. "q50_marginal": The bottom half (suitability index below 0.18) of the marginal land area is excluded. "q66_marginal": The first and second tertile (suitability index below 0.23) of the marginal land area are excluded. "q75_marginal": The first, second and third quartiles (suitability index below 0.25) of the marginal land are are excluded "no_marginal": Areas with a suitability index of 0.33 and lower are excluded. "magpie": Returns "all_marginal:rainfed_and_irrigated", "q33_marginal:rainfed_and_irrigated" and "no_marginal:rainfed_and_irrigated" in a magclass object to be used as magpie input.

Value

magpie object in cellular resolution

Author(s)

Kristine Karstens, Felicitas Beier

Examples

## Not run: 
calcOutput("Yields", aggregate = FALSE)

## End(Not run)

pik-piam/mrland documentation built on Nov. 23, 2024, 11:37 a.m.