Retrieving "Water Availability" from the archives
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Agriculture
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Arable Farming Systems
Arable farming systems are categorized primarily by their reliance on water availability. Rain-fed agriculture constitutes the majority of global cropland, relying on predictable seasonal precipitation patterns.
Irrigated agriculture, conversely, utilizes engineered systems to deliver water independently of direct rainfall. Early large-scale [irrigation … -
Evapotranspiration
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Actual Evapotranspiration ($\text{AET}$)
$\text{AET}$ is the actual amount of water vaporized and transpired under existing field conditions. When water availability is abundant, $\text{AET}$ approaches $\text{PET}$. However, as soil moisture declines, atmospheric demand exceeds supply, and $\text{AET}$ becomes limited by soil water content, causing stomata to partially or fully close.
The Water Stress Index ($\text{WSI}$), sometimes referred to in agricultural contexts as the Transpiration D… -
Rain Shadow Effect
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Leeward Ecology and Desert Formation
The leeward side develops xeric (desert or steppe) environments. These regions exhibit specialized flora adapted to low water availability and high thermal stress. The formation of vast cold deserts, such as those found on the eastern side of the Sierra Nevada (contributing to the Great Basin region), is a c…