Talk:Aridity index. This environment-related article is part of the WikiProject Environment to improve Wikipedia's coverage of the environment. The aim is to write neutral and well-referenced articles on environment-related topics, as well as to ensure that environment articles are properly categorized. Read Wikipedia:Contributing FAQ and leave ...

The distribution of aridity observed at any one point in time is largely the result of the general circulation of the atmosphere.The latter does change significantly over time through climate change.For example, temperature increase (by 1.5–2.1 percent) across the Nile Basin over the next 30–40 years could change the region from semi-arid to arid, resulting in a significant …

The Seasonal Variation of Effective Moisture is described by two indexes: The Aridity Index (Ia), used in wet climates to identify and quantify the severity of drought conditions, and the Humidity Index (Ih), used in dry climates to identify and quantify the severity of wet conditions. These indexes are represented by the equations:

For more guidance, see Wikipedia:Translation. The Gaussen Index (or Bagnouls-Gaussen Index) or xerothermic index is a method of calculating and comparing aridity . According to Henri Gaussen (French botanist and biogeographer ), a given period is said to be arid, when: P < 2 × T {\displaystyle P< {2\times T}} .

from Wikipedia, the free encyclopedia An aridity index is a numerical value to quantify the degree of climatic dryness at a given location and thus to define arid climatic zones . contents 1 description 1.1 Precipitation aridity index 1.2 UNEP aridity index 1.3 Thornthwaite moisture index 1.4 Overview 2 individual proofs description

An aridity index (AI) is a numerical indicator of the degree of dryness of the climate at a given location. A number of aridity indices have been proposed (see below); these indicators serve to identify, locate or delimit regions that suffer from a deficit of available water, a condition that can severely affect the effective use of the land for such activities as agriculture or stock-farming.

The index may be as presented in Equation (1): I DM = P T a +10 (1) where P is the annual amount of rainfall (in milli-metres) and T a is the mean annual air temperature (in degrees Celsius). According to the De Martonne aridity index, the types of climate are shown in Table 1. For example, in Greece, Baltas (2008) detected I DM values ranging from Semi-Arid to Very-Humid …

Aridity index is 0.33, the mean temperature during the months of winter is 6 [degrees]C whereas during months of summer is 24.5 [degrees]C [5]. Study of the effects of physiological trait selection on the yield potential in durum wheat (Triticum durum Desf.) under semi-arid conditions.