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Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

... drought that occurs when precipitation is significantly below normal over a long period.  2, fiche 1, Anglais, - meteorological%20drought

Record number: 1, Textual support number: 1 CONT

Meteorological drought is usually an expression of precipitation's departure from normal over some period of time. These definitions are usually region-specific, and presumably based on a thorough understanding of regional climatology. The variety of meteorologic definitions from different countries at different times illustrates why it is folly to apply a definition of drought developed in one part of the world to another : United States(1942) : less than 2. 5 mm of rainfall in 48 hours. Great Britain(1936) : fifteen consecutive days with daily precipitation totals of less than. 25 mm. Libya(1964) : when annual rainfall is less than 180 mm. India(1960) : actual seasonal rainfall is deficient by more than twice the mean deviation. Bali(1964) : a period of six days without rain. Meteorological measurements are the first indicators of drought.  3, fiche 1, Anglais, - meteorological%20drought

Record number: 1, Textual support number: 1 OBS

Drought is viewed as a sustained and regionally extensive occurrence of below average natural water availability, either in the form of precipitation, river runoff, or groundwater. Droughts may be classified as meteorological or hydrological: A Meteorological Drought occurs when there is below average availability of precipitation. The National Meteorological Service (NMS) subdivides meteorological drought into three categories: drought, extreme drought, and severe drought. Drought is defined as less than 60% (range 41-60) of normal rainfall over 8 consecutive weeks. Extreme drought is defined as less than 40% (range 21-40) of the normal rainfall over 8 consecutive weeks. Severe drought is defined as less than 20% (range 0-20) of the normal rainfall over 8 consecutive weeks. The normal rainfall is the thirty year mean.  4, fiche 1, Anglais, - meteorological%20drought

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 DEF

[...] sécheresse qui survient lorsque les précipitations sont bien inférieures à la normale au cours d'une longue période.  1, fiche 1, Français, - s%C3%A9cheresse%20m%C3%A9t%C3%A9orologique

Record number: 1, Textual support number: 1 OBS

On écrirait mieux «sècheresse».  2, fiche 1, Français, - s%C3%A9cheresse%20m%C3%A9t%C3%A9orologique

Record number: 1, Textual support number: 2 OBS

sècheresse : Cette graphie, puisée des Rectifications de l'orthographe recommandées par le Conseil supérieur de la langue française, est attestée dans le Petit Robert (2006).  3, fiche 1, Français, - s%C3%A9cheresse%20m%C3%A9t%C3%A9orologique

Fiche 1,  Justifications,  Espagnol

Record number: 1, Textual support number: 1 DEF

Sequía que se produce cuando la precipitación desciende mucho más de lo previsto en un área extensa durante un período prolongado.  1, fiche 1, Espagnol, - sequ%C3%ADa%20meteorol%C3%B3gica

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 DEF

The average over a period of years of the annual amounts of precipitation.  3, fiche 2, Anglais, - mean%20annual%20rainfall

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 DEF

Hauteur moyenne des précipitations annuelles tombant à un endroit donné et établie sur un grand nombre d'années.  1, fiche 2, Français, - pr%C3%A9cipitation%20moyenne%20annuelle

Fiche 2,  Justifications,  Espagnol