Aridity index Sample Clauses
The aridity index clause defines how the dryness of a region is measured, typically by comparing precipitation to potential evapotranspiration. In practice, this clause specifies the formula or method used to calculate the aridity index, and may set thresholds that determine whether certain contractual obligations or conditions are triggered, such as in agricultural or environmental agreements. Its core function is to provide an objective, standardized metric for assessing dryness, thereby ensuring clarity and consistency in how environmental conditions are evaluated within the contract.
Aridity index. The aridity index map shows moisture availability for potential growth of reference vegetation ignoring the impact of soil condition to absorb and retain water (Figure 11). The aridity index value is higher for more humid environments and lower for more arid environments. Precipitation and temperature data were obtained from the WorldClim dataset and mean annual evapotranspiration (MAE) was estimated based upon modelling of evapotranspiration (PET) (▇▇▇▇▇▇ ▇. ▇▇▇▇▇, ▇▇▇▇▇▇▇▇, ▇▇▇▇▇▇, & ▇▇▇▇▇▇▇, 2008). The aridity index was created by the Consultative Group on International Agricultural Research - Consortium for Spatial Information (CGIAR-CSI). This index is at a resolution of 30-arc seconds, or approximately 1 kilometer at the equator. Aridity is typically expressed as a function of precipitation, PET and temperature (▇ ▇ ▇▇▇▇▇, ▇▇▇▇▇▇▇▇, ▇▇▇ ▇▇▇▇▇▇▇▇, & ▇▇▇▇▇▇, 2006). The aridity index is used to calculate precipitation deficit over the ability of the atmosphere to remove water through evapo- transpiration processes (▇▇▇▇▇▇ ▇. ▇▇▇▇▇ et al., 2008). The equation used to calculate and map the aridity index is: 𝐴𝑟𝑖𝑑𝑖𝑡𝑦 𝐼𝑛𝑑𝑒𝑥 (𝐴𝐼) = 𝑀𝑒𝑎𝑛 𝑎𝑛𝑛𝑢𝑎𝑙 𝑝𝑟𝑒𝑐𝑖𝑝𝑖𝑡𝑎𝑡𝑖𝑜𝑛 (𝑀𝐴𝑃) 𝑀𝑒𝑎𝑛 𝑎𝑛𝑛𝑢𝑎𝑙 𝑒𝑣𝑎𝑝𝑜𝑡𝑟𝑎𝑛𝑠𝑝𝑖𝑟𝑎𝑡𝑖𝑜𝑛 (𝑀𝐴𝐸)