Moisture factor: Difference between revisions
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<div class="definition"><div class="short_definition">One of the simplest measures of [[precipitation effectiveness]], given by Lang as <div class="display-formula"><blockquote>[[File:ams2001glos-Me19.gif|link=|center|ams2001glos-Me19]]</blockquote></div> where ''P'' (cm) is [[precipitation]] and ''T'' (& | <div class="definition"><div class="short_definition">One of the simplest measures of [[precipitation effectiveness]], given by Lang as <div class="display-formula"><blockquote>[[File:ams2001glos-Me19.gif|link=|center|ams2001glos-Me19]]</blockquote></div> where ''P'' (cm) is [[precipitation]] and ''T'' (°C) [[mean temperature]] for the period in question.</div><br/> <div class="paragraph">This index recognizes only that as [[temperature]] increases, the effective moisture decreases due to greater [[evaporation]]. A number of greater refinements of this concept exist: De Martonne's [[index of aridity]]; Angström's [[humidity]] coefficient; Gorczyński's aridity coefficient; Thornthwaite's [[precipitation-effectiveness index]] and [[moisture index]]; and Köppen's formulas for outlining [[steppe climate]] and [[desert climate]].</div><br/> </div> | ||
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Latest revision as of 14:42, 20 February 2012
moisture factor[edit | edit source]
One of the simplest measures of precipitation effectiveness, given by Lang as where P (cm) is precipitation and T (°C) mean temperature for the period in question.
This index recognizes only that as temperature increases, the effective moisture decreases due to greater evaporation. A number of greater refinements of this concept exist: De Martonne's index of aridity; Angström's humidity coefficient; Gorczyński's aridity coefficient; Thornthwaite's precipitation-effectiveness index and moisture index; and Köppen's formulas for outlining steppe climate and desert climate.
