airmass source region

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English[edit]

Noun[edit]

airmass source region (plural airmass source regions)

  1. (physics, meteorology) An extensive area of the earth's surface over which bodies of air frequently remain for a sufficient time to acquire characteristic temperature and moisture properties imparted by that surface. Air so modified becomes identifiable as a distinct air mass. See Airmass.

References[edit]

FM 3-6 Field Behavior of NBC Agents.