Update of global maps of Alisov’s climate classification

Progress in Earth and Planetary Science

Table 2 Characteristics of each dry and moist air mass

Symbol	Types of air mass	\({\overline{\text{T}}}\) _ONDJFM	\({\overline{\text{q}}}\) _ONDJFM	\({\overline{\text{T}}}\) _AMJJAS	\({\overline{\text{q}}}\) _AMJJAS
Td	Tropical dry	290.79	9.68	291.01	9.96
Tm	Tropical moist	290.59	10.72	290.82	10.80
Sd	Subtropical dry	288.93	4.64	291.48	4.83
Sm	Subtropical moist	282.52	5.26	282.05	5.31
Pd	Polar dry	268.46	2.27	268.92	2.52
Pm	Polar moist	268.54	2.42	269.35	2.61
Ad	Arctic dry	253.39	0.57	243.37	0.24
Am	Arctic moist	254.81	0.67	250.01	0.48

Mean temperature \({\overline{\text{T}}}\) (K) and specific humidity \({\overline{\text{q}}}\) (g kg⁻¹) in each dry and moist air mass for the O–M and A–S half-years