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(1) North and South of equatorial and eutropical latitudinal belts (23ºN & 23ºS), if the locality is at 200 m altitude or higher, the thermic values at this altitude must be calculated increasing T by 0.6º, M by 0.5º, and It or Itc by 13 units, every 100 m higher than 200 m. But if the locality is northern 48º N or southern 51º S, the increases are T by 0.4º and Tp by 12 units, every 100 m higher than 200 m. (2) If Ic > 21 or It,Itc < 120, the thermotype must be calculated through Tp values. (3) The gelid thermotype includes the following ombrotypes: unsnowy (< 10 mm), low-snowy (10-200 mm), semi-snowy (200-500 mm), high-snowy (500-1000 mm) and hyper-snowy (> 1000 mm). (4) North of 45º N or South of 49º S, with Tp 720-900, hemiboreal thermotype name (Hbo) is used in Temperate territories if Ic < 21, alt. < 400 m, Tp 720-900; Ic 21-28, alt. < 600 m, Tp 740-900; Ic > 28, alt. < 1000 m, Tp 800-900. (5) Bioclimatic variants: Steppic (Stp), Submediterranean (Sbm), Bixeric (Bix), Antitropical (Ant), Pluviserotinal (Pse). |
