Heat index

From AMS Glossary
Revision as of 17:23, 20 February 2012 by Perlwikibot (Talk | contribs)
Jump to: navigation, search


heat index

As used by C. W. Thornthwaite in his 1948 climatic classification, a function of temperature designed to have low magnitude under cold conditions, increasing exponentially with increasing temperature. For a given station, it is numerically equal to the sum of the 12 monthly values of the expression
ams2001glos-He8
where t is the normal monthly temperature in °C.

The heat index is used in the computation of potential evapotranspiration, which, in turn, is one of the basic parameters of the 1948 classification.

Thornthwaite, C. W. 1948. An approach toward a rational classification of climate. Geogr. Rev.. 38. 55–94.

Personal tools
Namespaces
Variants