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A cairt o global lang term monthly average surface air temperaturs in Mollweide projection.

A temperatur is a numerical measure o het or cauld. Its measurement is bi detection o heat radiation or pairticle velocity or kinetic energy, or bi the bulk behavior o a thermometric material. It mey be calibratit in ony o sindry temperatur scales, Celsius, Fahrenheit, Kelvin, etc. The fundamental pheesical defineetion o temperatur is providit bi thermodynamics.