Derived according to the methodology described in Yao et al. (2025, https://www.researchsquare.com/article/rs-6121279/v1). A default update rate is set based on long-term irrigation techniques share data from two representative countries with good data coverage (USA and Iran). This rate is then adjusted individually in each grid cell based on the socio-economic (GDP per capita, governance, urbanization and gender inequality index) from SSP dataset and long-term (20-years) precipitation from ISIMIP3a. Update rates are re-calculated every five years, and interpolated linearly to annual values. The suitable irrigation techniques are different among crop types (see Jägermeyr et al., 2015). The codes for the data generation could be found in the github repository: https://github.com/YiYao1995/Irrigation-technique-shares-projection.git.
Download Instructions
ISIMIP participants can download these files from the DKRZ server using the path /work/bb0820/ISIMIP/ISIMIP3b/InputData/socioeconomic/irrigation-techniques
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