File:Trewartha classification world map 1991-2020 borderless.png

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Summary

Description
English: 1991-2020 Trewartha classifcation world map (no borders)

Extra subtypes listed at wikipedia:Trewartha climate classification are included (Am, Aw, As, Eo, Ec; -10C winter cutoff for Eo and Ec; Koppen thresholds for Am, Aw, and As; Aw/As based on high-sun/low-sun for winter/summer), extra subtypes Dca/Dcb are not included.

 
Ar: Tropical Wet
 
Aw: Tropical Wet-And-Dry Winter
 
As: Tropical Wet-And-Dry Summer
 
Bw: Desert or Arid
 
Bs: Steppe or Semiarid
 
Cs: Subtropical Dry Summer
 
Cw: Subtropical Monsoon
 
Cf: Subtropical Humid
 
Do: Temperate Oceanic
 
Dc: Temperate Continental
 
Eo: Boreal Oceanic
 
Ec: Boreal Continental
 
Ft: Tundra
 
Fi: Ice Cap

See also:

Date
Source

Monthly temperature and precipitation gridded data are sourced from:

(14 January 2026). "High-resolution (1 km) Köppen-Geiger maps for 1901–2099 based on constrained CMIP6 projections". Scientific Data. DOI:10.1038/s41597-023-02549-6.

Thresholds and criterias used for aridity, desert, semiarid, mediterranean, monsoon, dry winter, dry summer, and rainforest cutoffs are all sourced (using high sun/low sun for winter and summer) from:

(4 February 2014). "Climate classification revisited: from Köppen to Trewartha". Climate Research 59 (1): 1–13. DOI:10.3354/cr01204.
Author

Monthly temperature and precipitation gridded data are sourced from:

Beck, H.E., McVicar, T.R., Vergopolan, N., Alexis, B., Lutsko, N.J., Dufour, A., Zeng, Z., Jian, X., van Dijk, A.I.J.M., Miralles, D.G.

Thresholds and criterias used for aridity, desert, semiarid, mediterranean, monsoon, dry winter, dry summer, and rainforest cutoffs are all sourced from:

Belda, M; Holtanová, E; Halenka, T; Kalvová, J

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Trewartha classification world map 1991-2020 borderless

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25 June 2026

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Date/TimeThumbnailDimensionsUserComment
current02:46, 26 June 2026Thumbnail for version as of 02:46, 26 June 20263,600 × 1,800 (227 KB)Toran107Uploaded a work by Monthly temperature and precipitation gridded data are sourced from: Beck, H.E., McVicar, T.R., Vergopolan, N., Alexis, B., Lutsko, N.J., Dufour, A., Zeng, Z., Jian, X., van Dijk, A.I.J.M., Miralles, D.G. Thresholds and criterias used for aridity, desert, semiarid, mediterranean, monsoon, dry winter, dry summer, and rainforest cutoffs are all sourced from: Belda, M; Holtanová, E; Halenka, T; Kalvová, J from Monthly temperature and precipitation gridded data are sourced f...

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