The Ultra Meteorology Study Guide

What is temperature in meteorology?

Temperature is the average kinetic energy in an object.

What happens to molecules as temperature increases?

The molecules expand and move apart.

What is condensation?

Condensation is the process when a gas changes to a liquid, requiring heat to be lost.

What is evaporation?

Evaporation is the process when a liquid changes to a gas, requiring heat to be gained.

How is density calculated?

Density is calculated using the formula Density = mass/volume (m/v).

What happens to air density when air is heated?

The density of the air decreases.

What happens to air density when air is cooled?

The density of the air increases.

What causes warm air to rise?

Warm air is less dense than cool air, causing it to rise.

What is the process of heat transfer in the atmosphere?

Heat is transferred through the atmosphere by convection.

What is terrestrial radiation?

Terrestrial radiation is the process by which Earth radiates heat back into the atmosphere.

How do clouds affect daytime temperatures?

Clouds can absorb sunlight and reflect it back into space, keeping daytime temperatures cooler.

What is relative humidity?

Relative humidity is the amount of water vapor in the air compared to what the air can hold, expressed as a percentage.

How does temperature affect air pressure?

As air temperature increases, air pressure decreases; as air temperature decreases, air pressure increases.

What is a barometer used for?

A barometer is used to measure air pressure.

What is the relationship between air temperature and water vapor capacity?

Warm air has a greater water vapor capacity than cold air.

What is the effect of dry air on air pressure?

Dry air exerts more air pressure because it has more mass.

What is wind?

Wind is the horizontal movement of air along Earth's surface caused by differences in air pressure.

How is wind direction measured?

Wind direction is measured using a wind vane.

What determines wind speed?

The difference in air pressure over a certain distance, known as the pressure gradient, determines wind speed.

What do isobars on a weather map indicate?

Isobars are lines that connect points of equal barometric pressure and indicate wind speed.

What happens to air pressure as you move towards the center of a high-pressure area?

Air pressure increases as you move towards the center of a high-pressure area.

What is global convection in meteorology?

Global convection refers to the movement of air at different latitudes, where converging winds create wet belts and diverging winds create dry belts.

What is the significance of the equator in terms of air pressure?

The equator is an area of low pressure due to warm, wet air.

What happens to air as it rises at the equator?

As air rises at the equator, it cools, condenses, and precipitates.

What is the impact of water vapor on nighttime temperatures?

Water vapor (clouds) prevents terrestrial radiation from escaping, keeping nighttime temperatures warmer.

What is the effect of deserts on nighttime temperatures?

Deserts are cold at night because they lack water vapor, allowing infrared energy to escape into space.

What is the Coriolis Effect?

Winds deflect to the right in the northern hemisphere and to the left in the southern hemisphere due to Earth's rotation.

What is the dew point?

The temperature at which water will condense, occurring when air is saturated.

What happens when air reaches its dew point temperature?

Condensation occurs, forming clouds if there are condensation nuclei present.

What does it mean when relative humidity is 100%?

The air is saturated, and condensation occurs, leading to cloud formation.

What is an air mass?

A huge body of air that has similar temperature and humidity.

What are the characteristics of a Maritime Tropical (mT) air mass?

Moist and warm, forming over warm waters like the Gulf of Mexico.

What does 'c' represent in air mass symbols?

Continental, indicating the air mass forms over land and is typically dry.

What is the source region for Continental Polar (cP) air masses?

Canada.

What are the horse latitudes?

Areas located at approximately 30°N and 30°S latitude, known for calm winds and sunny skies.

What happens to air movement at the horse latitudes?

Air typically descends in the atmosphere before diverging at the surface.

What is a cold front?

When a fast-moving cold air mass collides with a slowly moving warm air mass, causing warm air to rise and cool.

What weather conditions are associated with cold fronts?

Heavy precipitation over a short period of time.

What is a cyclone?

A low-pressure system where air circulates counterclockwise and converges towards the center, associated with stormy weather.

What does CLICC stand for?

C = Cyclone, L = Low, I = Inward, C = Counter, C = Clockwise.

What is an anticyclone?

A high-pressure system where air circulates clockwise and diverges outward, associated with clear weather.

What does AHOC stand for?

A = Anticyclone, H = High, O = Outward, C = Clockwise.

How does the Bermuda high pressure system influence hurricanes?

It affects the steering flow, influencing a hurricane's storm track and landfall predictions.

What is the significance of the dew point in weather conditions?

It indicates the moisture content in the air and is crucial for cloud formation.

What is the relationship between temperature and relative humidity?

As air temperature decreases, relative humidity increases until it reaches 100% at the dew point.

What happens to hot humid air on a cold winter day?

It condenses when cooled to the dew point, often visible as fog or mist.

What are condensation nuclei?

Particles like smoke, dust, or pollen that provide surfaces for water vapor to condense on.

What is the typical weather pattern associated with high-pressure systems?

Clear, dry weather with little precipitation.

What is the effect of a cold front on air temperature?

It typically causes a drop in temperature as warm air rises and cools.

What is the primary factor affecting dew point temperature?

Water vapor content in the air.

How do air masses acquire their characteristics?

They stagnate over their source regions for extended periods.

What is the impact of a cold front on cloud cover?

Cloud cover increases as warm air rises and cools, leading to condensation.