pressure system
Atmospheric force zone
A pressure system is a region of the atmosphere where air pressure is distinctly higher or lower than in surrounding areas.
High-pressure systems generally bring clear, calm weather as air descends and spreads outward, while low-pressure systems draw air inward and upward, often producing clouds and precipitation.
Meteorologists track these systems on weather maps using isobars—lines connecting points of equal pressure—to forecast storms, fronts, and fair weather patterns.
Constant pressure contour
- frontForward-facing side
- troughOpen container for animal feed
- barometricOf air pressure measurement
- gradientRate of change across space
warm front · cold front · stationary front · air mass · millibar · hectopascal · contour · analysis
Violent tropical windstorm
- typhoonWestern Pacific hurricane
- depressionProlonged low state
- tropical stormOrganized oceanic wind system
- vortexRotating fluid column
rotation · eye · storm surge · cyclonic · convergence · spiral · gale force · squall
Instrument gauging atmospheric pressure
- anemometerInstrument measuring air velocity
- altimeterInstrument measuring elevation
- aneroidWithout liquid medium
- steadyFixed, not fluctuating
High-altitude wind current
- Coriolis effectApparent deflection on rotating bodies
- convergenceProcess of approaching sameness
- divergenceSeparation from common origin
- advectionHorizontal transport by flow
oscillation · El Niño · La Niña · trade winds · westerlies · polar vortex
Gradual ground sinking
- clear skiesAbsence of cloud cover
- stableSecure and unchanging
- ridgeNarrow raised strip
- divergenceSeparation from common origin
fair weather · settled · dome · clockwise · sunny · calm · temperature inversion
isobar
Constant pressure contour
- frontForward-facing side
- troughOpen container for animal feed
- barometricOf air pressure measurement
gradient · warm front · cold front · stationary front · air mass · millibar · hectopascal · contour · analysis · weather map
hurricane
Violent tropical windstorm
- typhoonWestern Pacific hurricane
- depressionProlonged low state
- tropical stormOrganized oceanic wind system
vortex · rotation · eye · storm surge · cyclonic · convergence · spiral · gale force · squall · disturbance
barometer
Instrument gauging atmospheric pressure
- anemometerInstrument measuring air velocity
- altimeterInstrument measuring elevation
- aneroidWithout liquid medium
jet stream
High-altitude wind current
- Coriolis effectApparent deflection on rotating bodies
- convergenceProcess of approaching sameness
- divergenceSeparation from common origin
advection · oscillation · El Niño · La Niña · trade winds · westerlies · polar vortex
subsidence
Gradual ground sinking
- clear skiesAbsence of cloud cover
- stableSecure and unchanging
- ridgeNarrow raised strip
divergence · fair weather · settled · dome · clockwise · sunny · calm · temperature inversion
- weatherweather, rain, sun, snow, wind
- climateclimate change, climate, weather, global warming, temperature
- meteorologyweather, rain, wind, snow, clouds
- weather forecastingforecast, forecasts, weather forecast, weather report, weather reports
- pressureabsolute, psi, pascal, kilopascal, hectopascal
- tropical weatherhurricane, tropical storm, tropical cyclone, hurricanes, tropical depression
pressure systemlow-pressure system
Area of falling barometric reading
anticyclone · cyclone · ridge · trough · high
system, pressure, systems, systematic, pressured, systemic, pressures, pressuring, ecosystem