Datasets

Author

Parsa Khayatzadeh

Data for agriculture and land use:

Data required by the SIMPLE model:

Input Variables Unit Dataset
Weather variables NEX-GDDP_CMIP6
Daily maximum temperature (TMAX) °C
Daily minimum temperature (TMIN) °C
Daily rainfall amount (RAIN) Mm
Daily solar radiation (SRAD) MJ m−2 day−1
Soil characteristics GFDL-ESM4
Atmospheric CO2 concentration Ppm
Fraction of plant available water-holding capacity in considered soil bucket (AWC)
Runoff curve number (RCN)
Deep drainage coefficient (DDC)
Active main root zone depth (RZD) Mm
Crop management variables
Sowing date (SowingDate) From local
Harvesting date (HarvestDate)
Irrigation (Irri) Mm From local
Initial variables
Initial biomass (InitialBio) Kg From table
Initial cumulative temperature (InitialTT) °C d
Initial fraction of solar radiation interception (InitialFsolar)
Table 1: Table of Input Variables, Units, and Datasets
  • Weather:
    • TASMAX
    • TASMIN
    • RAIN

Climate Data:

Crop models require daily downscaled data to provide accurate results related to lands under study. We have used NEX-GDDP-CMIP6 datasets specifically from GFDL ESM4. NASA Earth Exchange Global Daily Downscaled Projections for CMIP6 (NEX-GDDP-CMIP6) provides highly downscaled and bias-corrected data from the latest generation of the Coupled Model Intercomparison Project Phase 6 (CMIP6). This dataset allows us to obtain finer scale results regarding the climate impact on crops.

Equations for Crop Yield