Difference between revisions of "Aridity coefficient"

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<div class="definition"><div class="short_definition">A function of [[precipitation]] and [[temperature]] designed  by W. Gorczy&#x00144;ski to  represent the relative lack of effective moisture (the [[aridity]]) of a place.</div><br/> <div class="paragraph">It is given by (latitude factor) &times;  (temperature range)  &times;  (precipitation ratio). The latitude factor  is the cosecant of the latitude (taken as 3.0 for 0&deg;&ndash;4&deg;). The temperature [[range]] is the  difference  (&deg;F) between the means of the hottest and coldest months.  The precipitation ratio is the difference  between the highest and lowest  annual totals (adjusted to a 50-year record) divided by the average.</div><br/> <div class="paragraph">The value of this coefficient is about 100 in the middle of the Sahara; in  the United States it  ranges from 70 at Bagdad, California, to 2 at Eureka,  California.</div><br/> </div>
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<div class="definition"><div class="short_definition">A function of [[precipitation]] and [[temperature]] designed  by W. Gorczy&#x00144;ski to  represent the relative lack of effective moisture (the [[aridity]]) of a place.</div><br/> <div class="paragraph">It is given by (latitude factor) &times;  (temperature range)  &times;  (precipitation ratio). The latitude factor  is the cosecant of the latitude (taken as 3.0 for 0&#x000b0;&ndash;4&#x000b0;). The temperature [[range]] is the  difference  (&#x000b0;F) between the means of the hottest and coldest months.  The precipitation ratio is the difference  between the highest and lowest  annual totals (adjusted to a 50-year record) divided by the average.</div><br/> <div class="paragraph">The value of this coefficient is about 100 in the middle of the Sahara; in  the United States it  ranges from 70 at Bagdad, California, to 2 at Eureka,  California.</div><br/> </div>
 
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Latest revision as of 13:40, 20 February 2012



aridity coefficient

A function of precipitation and temperature designed by W. Gorczyński to represent the relative lack of effective moisture (the aridity) of a place.

It is given by (latitude factor) × (temperature range) × (precipitation ratio). The latitude factor is the cosecant of the latitude (taken as 3.0 for 0°–4°). The temperature range is the difference (°F) between the means of the hottest and coldest months. The precipitation ratio is the difference between the highest and lowest annual totals (adjusted to a 50-year record) divided by the average.

The value of this coefficient is about 100 in the middle of the Sahara; in the United States it ranges from 70 at Bagdad, California, to 2 at Eureka, California.


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