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The resulting index number indicates the number of biologically dry days in a year for a given location (it therefore ranges between 0 and 365). The data includes not only precipitationstricto sensu but also fog, dew and humidity of the air.
In general, it is accepted that an environment is non-arid when the index is less than 100, semi-arid between 100 and 290, arid between 290 and 350, and hyperarid between 350 and 365.
This index is very useful for the use of an ombrothermic diagram [fr], the latter always constructed on the scale model: 1 °C = 2 mm precipitation.
Other indices such as the Louis Emberger rainfall quotient (which is not unique) have been defined. However, the Gaussen index which is simple and precise is still preferable.[3] Indeed Henri Gaussen defines precisely the 4 nuances of Mediterranean climate just against this index,[4] while Emberger defines the level of humidity in a region of Mediterranean climate but does not support precisely this Mediterranean climate.[3]
The calculation does not reflect reality because it is based on averages. For example, according to the calculation, we find a total of 0 biologically dry days in Lyon, for 60 biologically dry days in Marseille.[5]
^ abTassin, Claude (31 May 2012). Paysages végétaux du domaine méditerranéen : bassin méditerranéen, Californie, Chili central, Afrique du Sud, Australie méridionale [Mediterranean Vegetation Landscapes : Mediterranean basin, California, Central Chile, South Africa, South Australia] (in French). Marseille: IRD Éditions. ISBN978-2-7099-1731-5.
Gaussen, Henri; F., Bagnouls (12 January 1952). "L'indice xérothermique" [The xerothermic index]. Bulletin de l'Association de géographes français (in French). 29 (222–223): 10–16. doi:10.3406/bagf.1952.7361.
Gaussen, Henri; Bagnouls, F. (1953). Saison sèche et indice xérothermique [Dry seasons and the Xerothermic index] (in French). University of Toulouse, Faculty of Sciences. OCLC 893798321.
Gaussen, Henri; Bagnouls, F. (1957). "Les climats biologiques et leur classification" [Biological climates and their classification]. Annales de Géographie (in French). 6 (355): 193–220. doi:10.3406/geo.1957.18273.
October 31, 2023
gaussen, index, help, expand, this, article, with, text, translated, from, corresponding, article, spanish, september, 2021, click, show, important, translation, instructions, view, machine, translated, version, spanish, article, machine, translation, like, de. You can help expand this article with text translated from the corresponding article in Spanish September 2021 Click show for important translation instructions View a machine translated version of the Spanish article Machine translation like DeepL or Google Translate is a useful starting point for translations but translators must revise errors as necessary and confirm that the translation is accurate rather than simply copy pasting machine translated text into the English Wikipedia Consider adding a topic to this template there are already 5 119 articles in the main category and specifying topic will aid in categorization Do not translate text that appears unreliable or low quality If possible verify the text with references provided in the foreign language article You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation A model attribution edit summary is Content in this edit is translated from the existing Spanish Wikipedia article at es Indice xerotermico de Gaussen see its history for attribution You should also add the template Translated es Indice xerotermico de Gaussen to the talk page For more guidance see Wikipedia Translation The Gaussen Index or Bagnouls Gaussen Index or xerothermic index is a method of calculating and comparing aridity According to Henri Gaussen French botanist and biogeographer a given period is said to be arid when P lt 2 T displaystyle P lt 2 times T 1 2 P total precipitation in millimeters over the given period T average temperature in C over the given period The resulting index number indicates the number of biologically dry days in a year for a given location it therefore ranges between 0 and 365 The data includes not only precipitation stricto sensu but also fog dew and humidity of the air In general it is accepted that an environment is non arid when the index is less than 100 semi arid between 100 and 290 arid between 290 and 350 and hyperarid between 350 and 365 This index is very useful for the use of an ombrothermic diagram fr the latter always constructed on the scale model 1 C 2 mm precipitation Other indices such as the Louis Emberger rainfall quotient which is not unique have been defined However the Gaussen index which is simple and precise is still preferable 3 Indeed Henri Gaussen defines precisely the 4 nuances of Mediterranean climate just against this index 4 while Emberger defines the level of humidity in a region of Mediterranean climate but does not support precisely this Mediterranean climate 3 The calculation does not reflect reality because it is based on averages For example according to the calculation we find a total of 0 biologically dry days in Lyon for 60 biologically dry days in Marseille 5 References edit Gaussen and Bagnouls 1952 pp 10 11 Gaussen and Bagnouls 1957 p 194 a b Tassin Claude 31 May 2012 Paysages vegetaux du domaine mediterraneen bassin mediterraneen Californie Chili central Afrique du Sud Australie meridionale Mediterranean Vegetation Landscapes Mediterranean basin California Central Chile South Africa South Australia in French Marseille IRD Editions ISBN 978 2 7099 1731 5 Gaussen and Bagnouls 1957 p 200 Gaussen and Bagnouls 1952 p 12 Bibliography editGaussen Henri F Bagnouls 12 January 1952 L indice xerothermique The xerothermic index Bulletin de l Association de geographes francais in French 29 222 223 10 16 doi 10 3406 bagf 1952 7361 Gaussen Henri Bagnouls F 1953 Saison seche et indice xerothermique Dry seasons and the Xerothermic index in French University of Toulouse Faculty of Sciences OCLC 893798321 Gaussen Henri Bagnouls F 1957 Les climats biologiques et leur classification Biological climates and their classification Annales de Geographie in French 6 355 193 220 doi 10 3406 geo 1957 18273 Retrieved from https en wikipedia org w index php title Gaussen Index amp oldid 1181347274, wikipedia, wiki, book, books, library,
