airmass
Tropospheric pressure zone
An airmass is a large body of air with relatively uniform temperature and humidity throughout, formed when air sits over a region long enough to take on its characteristics.
Meteorologists classify airmasses by their source regions—polar or tropical, continental or maritime.
Weather changes often occur when different airmasses meet: A cold airmass is moving in from Canada.
Of extreme latitudes
- tropicalOf hot, humid regions
- maritimeOf the sea
- continentalOf a continent
- arcticOf extreme northern cold
equatorial · modification · trajectory · stability · instability · warm · cold · dry
Measured heat intensity
- humidityMoisture in atmosphere
- densityMass-to-volume ratio
- pressureForce upon contact
- dewpointCondensation onset temperature
moisture · saturation · vapor · lifting · convection · stability · instability · thickness
Violent weather with lightning
- precipitationAtmospheric water deposit
- fogLow-lying cloud cover
- hazeMurky atmospheric suspension
- visibilityRange of clear sight
clouds · rain · snow · drizzle · lake effect · stagnation · heatwave · cold snap
Forward-facing side
- cold frontIncoming cooler air mass
- warm frontAdvancing temperate air mass
- occludedBlocked or closed off
- stationaryNot in motion
convergence · boundary · clash · collision · mixing · transition zone · dryline · squall line
Atmospheric conditions chart
- isobarConstant pressure contour
- isothermConstant-temperature boundary line
- soundingDepth measurement technique
- radiosondeBalloon-borne meteorological telemetry device
synoptic · forecast · trajectory · satellite · modeling · NOAA · meteorologist
polar
Of extreme latitudes
- tropicalOf hot, humid regions
- maritimeOf the sea
- continentalOf a continent
arctic · equatorial · modification · trajectory · stability · instability · warm · cold · dry · moist
temperature
Measured heat intensity
dewpoint · moisture · saturation · vapor · lifting · convection · stability · instability · thickness · buoyancy
thunderstorm
Violent weather with lightning
- precipitationAtmospheric water deposit
- fogLow-lying cloud cover
- hazeMurky atmospheric suspension
visibility · clouds · rain · snow · drizzle · lake effect · stagnation · heatwave · cold snap · humidity
front
Forward-facing side
- cold frontIncoming cooler air mass
- warm frontAdvancing temperate air mass
- occludedBlocked or closed off
stationary · convergence · boundary · clash · collision · mixing · transition zone · dryline · squall line · outflow
weather map
Atmospheric conditions chart
- isobarConstant pressure contour
- isothermConstant-temperature boundary line
- soundingDepth measurement technique
radiosonde · synoptic · forecast · trajectory · satellite · modeling · NOAA · meteorologist
airmassjet stream
High-altitude wind current
air current · wind · front · weather front · cold front
air, mass, airy, massive, airs, airing, aired, massiveness, airer