Summary
Köppen's definition of the climates of tropical savanna and forest is validated for Amazonia. A new validation is also found for the rainfall regimes which delimit tropical-subtropical vegetation zones of rainforest, monsoon forest, savanna and desert in India, as originally conceived by Walter. The climatologic definition of Köppen is reconciled with the climatographic definition of the ecologist Walter. The ratio-nalization is based on numerical climatonomic evaluation of the minimum in the annual course of EVAPORABLE WATER within tropical-subtropical rainfall regimes.
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Lettau, H.H. Vegetation zones and EVAPORABLE WATER in tropical climates. Theor Appl Climatol 48, 215–226 (1994). https://doi.org/10.1007/BF00867052
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DOI: https://doi.org/10.1007/BF00867052