air-mass analysis

In general, the theory and practice of synoptic surface-chart analysis by the so-called Norwegian methods, which involve the concepts of the polar front and of the broad-scale air masses which it separates.

Related terms:

• air-mass climatology
• air-mass precipitation
• warm air mass
• air-mass source region
• air-mass shower
• solar air mass
• air mass
• optical air mass
• international analysis code
• differential analysis