aridity index

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aridity index

[ə′rid·əd·ē ‚in‚deks]
(climatology)
An index of the degree of water deficiency below water need at any given station; a measure of aridity.
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Horneck, 2008: Ultraviolet radiation-induced limitation to epilithic microbial growth in arid deserts-Dosimetric experiments in the hyperarid core of the Atacama Desert.
Moreover, the initial analyses provide baseline data that could be used by future researchers to assess long-term recovery in this hyperarid ecosystem.
2007) proposed that supergene copper oxide minerals were later replaced by atacamite following the onset of hyperarid climatic conditions.
The cliff bordering Lake Eyre on its western side, for instance, is capped by gypcrete which is cohesive and, in the prevailing hyperarid climate, more resistant than the underlying, friable, gypseous silts; all is relative.
Specimens analyzed were from muscle and visceral tissues in excavated, naturally mummified human bodies buried in that hyperarid desert during the past 9 millennia.
This produced the hyperarid climates that rapidly reached their greatest extent and development during the Pleistocene and the Holocene (e.
In modern scientific usage, the term desert has been increasingly restricted in meaning, becoming almost synonymous with a hyperarid area.
Aardwolves (Proteles cristatus) are solitary, nocturnal, medium-sized (7-10 kg) mammals that occur in east-central and southern Africa, typically in regions of arid and semiarid grasslands, including the Kalahari Desert and some parts of the hyperarid Namib Desert (Skinner and Smithers 1990).
Rise and decline of Chinchorro sacred landscapes along the hyperarid coast of the Atacama Desert.
We suggest that not only tropical hyperarid and hot, or isolated, environments can mold semelparous life histories, but that semelparity also can occur at high-elevation zones in central Mexico (2,800-4,200 m; Rodriguez-Romero et al.
This is actually a perfect case of rain shadow desert comparable to the well known Californian Death Valley, with an hyperarid climate.