Climate types  ETP annual (mm)  Climate Subtypes  (ETP in the summer /ETP annual) *100 
$\text{A \u2032}$ → megathermic  ETP ≥ 1140  $\text{a \u2032}$  Less than 48.0% 
${\text{B \u2032}}_{\text{4}}$ →mesothermic  1140 >ETP ≥ 997  ${\text{b \u2032}}_{\text{4}}$  between 48.0% and less than 51.9% 
${\text{B \u2032}}_{\text{3}}$ →mesothermal  997 > ETP ≥ 885  ${\text{b \u2032}}_{\text{3}}$  between 51.9% and less than56.3% 
${\text{B \u2032}}_{\text{2}}$ →mesothermal  885 > ETP ≥ 712  ${\text{b \u2032}}_{\text{2}}$  between 56.3% and less than 61.6% 
${\text{B \u2032}}_{\text{1}}$ → mesothermal  712 > ETP ≥ 570  ${\text{b \u2032}}_{\text{1}}$  between 61.6% and less than 68.0% 
${\text{C \u2032}}_{\text{2}}$ → microthermal  570 > ETP ≥ 427  ${\text{c \u2032}}_{2}$  between 68.0% and less than 76.3% 
${\text{C \u2032}}_{\text{1}}$ → microthermal  427 > ETP ≥ 287  ${\text{c \u2032}}_{\text{1}}$  between 76.3% and less than 88.0% 
$\text{D \u2032}$ → tundra  287 > ETP ≥ 142  $\text{d \u2032}$  equal or more than 88.0% 
$\text{E \u2032}$ → perpetual ice  ETP < 142 

