The Atmosphere

These flashcards cover key terms and concepts related to the atmosphere, including layers, weather vs. climate, air masses, and precipitation.

Troposphere

The lowest layer of the atmosphere where most weather occurs.

Stratosphere

The layer of the atmosphere that warms due to ozone absorbing ultraviolet light.

Mesosphere

The layer above the stratosphere that cools due to a lack of ozone.

Thermosphere

The upper layer of the atmosphere that warms because it absorbs high-energy radiation.

Weather

Short-term atmospheric conditions at a specific time and place.

Climate

Long-term average of weather conditions over extended periods.

Relative Humidity

The amount of water vapor in the air compared to the maximum it can hold at that temperature.

Air Pressure

The force exerted by air molecules over an area.

Coriolis Force

An apparent force that causes moving objects to be deflected due to Earth's rotation.

Pressure-Gradient Force

The force that results from differences in air pressure, causing air to flow from high to low pressure.

Geostrophic Wind

Winds that flow parallel to isobars due to the balance of pressure gradient and Coriolis forces.

Hadley Cells

Large-scale atmospheric circulation cells that help distribute heat from the equator to the poles.

Trade Winds

Winds that blow from the east in the tropics, resulting from the Hadley cells.

Intertropical Convergence Zone (ITCZ)

The area near the equator where trade winds from the Northern and Southern Hemispheres meet.

El Niño

A periodic climate pattern characterized by warmer sea surface temperatures in the Pacific Ocean.

La Niña

A periodic climate pattern characterized by cooler sea surface temperatures in the Pacific Ocean.

Monsoons

Seasonal wind patterns that bring significant rainfall to certain regions.

Air Masses

Large bodies of air with uniform temperature and humidity.

Cold Front

A boundary where a cold air mass advances and pushes under a warm air mass.

Warm Front

A boundary where a warm air mass advances over a retreating cold air mass.

Occluded Front

A front formed when a cold front overtakes a warm front.

Stationary Front

A boundary between air masses that moves very little.

Polar Front

The boundary between warm tropical air and cold polar air.

Jet Stream

Fast-flowing air currents in the upper atmosphere that can influence weather patterns.

Circulation Cells

Atmospheric patterns that transfer heat from the equator to the poles.

Humidity

The amount of water vapor present in the air.

Temperature

A measurement of how hot or cold something is, related to atomic movement.

Density

The mass of air per unit volume, which decreases with altitude.

Wind

The horizontal movement of air caused by differences in air pressure.

Clouds

Visible water droplets or ice crystals in the atmosphere.

Precipitation

Any form of water that falls from clouds to the ground.

Pressure

The force exerted by air in a specific area.

Friction

The force that slows down moving air as it interacts with the Earth's surface.

Supersaturation

When air contains more water vapor than it can hold at a given temperature.

Updrafts

Vertical movements of air that can contribute to cloud formation.

Downdrafts

Descending air currents that can occur during storm events.

Latent Heat

Energy absorbed or released during a phase change of water.

Warm Clouds

Clouds formed at temperatures above freezing.

Cold Clouds

Clouds formed at temperatures below freezing.

Hail

Balls or irregular chunks of ice that form in thunderstorms.

Fog

A cloud that forms close to the ground, reducing visibility.

Satellite Technology

Tools used to detect cloud cover and moisture levels in the atmosphere.

Radar Technology

Tools that utilize microwaves to detect precipitation in the atmosphere.

Temperature Anomalies

Deviations from long-term average temperatures in a certain area.

Cumulonimbus Clouds

Large, towering clouds associated with thunderstorms.

Aerosols

Microscopic particles that serve as nuclei for cloud precipitation.

Turbulence

Irregular motion of air resulting from different densities and speeds.