This dataset is part of the MapSPAM series on spatial production. It is produced as interim result using GMIA v5.0 data about irrigated areas as input. Georeferenced data on the share of irrigated area is used to estimate the extent of irrigated cropland per grid. It estimates the amount of area equipped for irrigation around the year 2005. A map of area equipped for irrigation (grid level) is presented in the Supplement (Section S9).
"We adopt the irrigated area (IrrArea) from the Global Map of Irrigation Areas (GMIA) to consider the share of irrigated area within a grid as an allocation parameter. GMIAv5.0 is the only irrigated area dataset with global coverage, which estimates the amount of area equipped for irrigation at a 5 arcmin resolution for the period around 2005 (Siebert et al., 2013). GIMAv5.0 does not include information on the functionality or quality of irrigation equipment and makes no distinctions between different types of irrigation, which may introduce errors and inconsistencies into the allocation."
Yu, Qiangyi; You, Liangzhi; Wood-Sichra, Ulrike; Ru, Yating; Joglekar, Alison K. B.; Fritz, Steffen et al. (2020): A cultivated planet in 2010 – Part 2: The global gridded agricultural-production maps. In: Earth Syst. Sci. Data 12 (4), S. 3545–3572. DOI: 10.5194/essd-12-3545-2020.
"Coupled with the cropland information described above, geo-referenced data on the share of irrigated area
within a grid is used to estimate the extent of irrigated cropland per grid. The Land and Water Division of FAO
and the University of Frankfurt jointly developed the Global Map of Irrigation Areas (GMIA) version 5.0, which
estimates the amount of area equipped for irrigation (IrrAreai) at a 5 arc-minute resolution around the year 2005".
Yu, Qiangyi; You, Liangzhi; Wood-Sichra, Ulrike; Ru, Yating; Joglekar, Alison K. B.; Fritz, Steffen et al. (2020): Supplement of "A cultivated planet in 2010 – Part 2: The global gridded agricultural-production maps". In: Supplement of Earth Syst. Sci. Data (Earth System Science Data) 12 (4). DOI: 10.5194/essd-12-3545-2020-supplement.
