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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

Classification of air masses in terms of: .latitude of origin (tropical, polar, arctic or antarctic); .the nature of the underlying surface (continental or maritime); .hydrostatic stability (stable or unstable); .the difference between the temperature of an air mass and that of the underlying surface or of a neighbouring air mass (warmer or colder).  1, record 1, English, - air%2Dmass%20classification

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Classification des masses d’air d’après :. l'origine(tropicale, polaire, arctique ou antarctique) ;. la nature de la surface sous-jacente(continentale ou maritime) ;. la stabilité hydrostatique(air stable ou instable) ;. la différence entre la température d’une masse d’air et celle de la surface sous-jacente ou de la masse d’air voisine(plus chaude ou plus froide).  2, record 1, French, - classification%20des%20masses%20d%27air

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 DEF

División de las masas de aire en clases según: .la latitud de su origen (aire tropical, polar, ártico o antártico); .la naturaleza de la superficie sobre la que se encuentra (aire continental o marítimo); .el grado de estabilidad hidrostática (aire estable o inestable); .la diferencia en temperatura con respecto a la de la superficie subyacente o a la de una masa vecina (aire más frío o más caliente).  1, record 1, Spanish, - clasificaci%C3%B3n%20de%20las%20masas%20de%20aire

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

In summer, the maritime arctic air mass forms when cold air descends southward from the polar regions, passing over many lakes. The lakes supply the air mass with moisture and turn it into a maritime arctic air mass.  3, record 2, English, - maritime%20arctic%20air

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

L'été, la masse d’air maritime arctique se forme lorsque de l'air froid descend des régions polaires vers le Sud, en passant au-dessus de nombreux lacs. Les lacs [alimentent la masse d’air] et la transforment en maritime arctique.  3, record 2, French, - air%20arctique%20maritime

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 CONT

La masa de aire ártico marítimo es también fría al tener su fuente en el Océano Glacial Ártico. Cuando el aire ártico marítimo pierde latitud es habitual que origine fuerte inestabilidad atmosférica en las tierras ibéricas [...]  1, record 2, Spanish, - masa%20de%20aire%20%C3%A1rtico%20mar%C3%ADtimo

Record number: 2, Textual support number: 1 OBS

masa de aire ártica marítima: La documentación impresa y los sitios web de fuentes reconocidas consultados hacen concordar el adjetivo "ártico" y "marítimo" con aire y no con masa. La concordancia de los adjetivos con "masa" se observa en fuentes menos fidedignas.  3, record 2, Spanish, - masa%20de%20aire%20%C3%A1rtico%20mar%C3%ADtimo

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

Mass of air which has been over regions close to the equator for several days and which, therefore, has become fairly warm.  4, record 3, English, - equatorial%20air%20mass

Record number: 3, Textual support number: 1 CONT

Air masses are classified as equatorial if they develop near the equator, tropical if they originate in the low latitudes, and polar if they originate in the high latitudes. Equatorial air masses are warm and very moist, tropical air masses are warm, and polar air masses are ... well, cold.  5, record 3, English, - equatorial%20air%20mass

Record number: 3, Textual support number: 2 CONT

Equatorial (E) air masses, [hot and extremely humid], rarely visit the contiguous United States and almost never reach Canada, but these air masses are important weather factors for the southern nations of North America: southern Mexico, Central America and many of the Atlantic island nations.  2, record 3, English, - equatorial%20air%20mass

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

Masse d’air qui a été sur des régions proches de l’équateur pendant plusieurs jours et qui, par suite, est devenue relativement chaude.  4, record 3, French, - masse%20d%27air%20%C3%A9quatorial

Record number: 3, Textual support number: 1 CONT

Les masses d’air sont classifiées selon deux caractéristiques; la température :-très chaude : masse d’air équatoriale(E),-chaude : masse d’air tropicale(T),-froide : masse d’air polaire(P),-très froide : masse d’air arctique(A), l'humidité :-sec : masse d’air continentale(c),-humide : masse d’air maritime(m).  3, record 3, French, - masse%20d%27air%20%C3%A9quatorial

Record 3,  Textual support,  Spanish

Record number: 3, Textual support number: 1 DEF

Masa de aire que ha permanecido durante varios días en regiones próximas al Ecuador y que, por lo tanto, está relativamente caliente.  2, record 3, Spanish, - masa%20de%20aire%20ecuatorial