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air mass
Definição1
An extensive body of air having fairly uniform properties of temperature and moisture.
Fonte1
FEDERAL AVIATION ADMINISTRATION. Pilot's handbook of aeronautical knowledge. [s.l.], 2008. Disponível em: http://www.faa.gov/regulations_policies/handbooks_manuals/aviation/pilot_handbook/media/PHAK%20-%20Cover-Preface.pdf. Acesso em: 26 jun. 2014.
Definição2
A widespread body of air that is approximately homogeneous in its horizontal extent, particularly with reference to temperature and moisture distribution; in addition, the vertical temperature and moisture variations are approximately the same over its horizontal extent.
Fonte2
INTERNATIONAL CIVIL AVIATION ORGANIZATION. Assembly 36th session: Montreal, 18-28 september 2007: plenary meetings: minutes. Montreal, 2007. (Doc. 9891 A36-Min. P/1-9).
Contexto
An air mass in a region such as Europe can thus cross all State boundaries in a little more than one day.
Subárea
Meteorology
Français
masse d'air