Mean annual crop factor - future climate scenario for 2030 A1B emissions CSIRO Mk3.5 GCM medium climatic sensitivity - OZCLIM + ANUCLIMv5.1

The monthly ratio of actual evapotranspiration to potential (pan, free-water surface) evaporation. Adapted from the index by Specht and Jones (1971). Actual evapotranspiration is an output of a water balance model, and potential evaporation is an input. This ratio represents a water stress index and has been termed the €Ëœcrop factorۉ€ž¢ (Doorenbos and Pruitt 1975).

该数据集为实际蒸散发（actual evapotranspiration）与潜在（蒸发皿、自由水面）蒸发（potential (pan, free-water surface) evaporation）的月际比值。该指标改编自施佩希特（Specht）与琼斯（Jones）1971年提出的指数。其中，实际蒸散发为水量平衡模型（water balance model）的输出结果，潜在蒸发则作为模型输入项。该比值可表征水分胁迫指数（water stress index），且被多伦博斯（Doorenbos）与普鲁伊特（Pruitt）1975年称为作物系数（crop factor）。