what causes the development of most clouds and precipitation in the atmosphere?

What Causes The Development Of Most Clouds And Precipitation In The Atmosphere??

Rising warm air cools, resulting in cloud formation and rain. What causes the development of most clouds and precipitation in the atmosphere? … A rising parcel of air will expand and cool.

What are the causes of precipitation?

Precipitation occurs when water droplets or crystals condense out of air saturated with water vapor and fall from the sky to the ground. It may occur when evaporation causes the amount of water vapor in the air to increase or when air cools and its capacity to hold water decreases. Precipitation comes from clouds.

Under what conditions would a parcel of air rises relative to other air in the atmosphere?

Why would a parcel of air rise relative to other air in the atmosphere? A parcel of air will rise if it has a higher density than the surrounding air. A parcel of air will rise if it has a lower density than the surrounding air.

How is precipitation formed?

Precipitation forms in the clouds when water vapor condenses into bigger and bigger droplets of water. When the drops are heavy enough, they fall to the Earth. … These ice crystals then fall to the Earth as snow, hail, or rain, depending on the temperature within the cloud and at the Earth’s surface.

What causes air to rise high into the atmosphere?

The most powerful force which causes air to rise and cool is the Sun. When the Sun heats the surface of the Earth, warming of the air above the ground takes place. This warm air rises and cools as it goes higher. At a certain point, condensation will occur and clouds will form.

What are the 3 causes of precipitation?

Causes of precipitation :

  • Cooling of air to the dew point temperature to produce saturation condition.
  • Being a condensation of moist air masses.
  • Growth of droplet.
  • Accumulation of moisture of sufficient intensity to account for the observed rates of rainfall.

Where does more precipitation occur?

The global distribution of precipitation is influenced by the general circulation of the atmosphere, proximity to large bodies of water, and topography. Precipitation is most abundant where air rises, and least abundant where it sinks. It also tends to be greater near oceans and lakes, and in higher elevations.

What causes an air parcel to rise vertically?

Clouds that form in an unstable air are called cumuliform clouds and develop vertically. … If the parcel of air is being lifted to a certain altitude in the atmosphere is warmer than the environment the parcel will have a positive buoyancy and will continue to rise because is it less dense than the surroundings.

Why would a parcel of air rise relative to other air in the atmosphere Why would a parcel of air rise relative to other air in the atmosphere?

Why would a parcel of air rise relative to other air in the atmosphere? A parcel of air will rise if it has a higher density than the surrounding air.

What causes an air parcel to stop rising?

When the temperature of an air parcel starts out higher, it will have to rise higher in the troposphere before the temperature of the air parcel and the surrounding air are equal. When the temperatures become equal the air parcel will stop rising.

How does precipitation form in cold clouds?

In cold clouds ice crystals and water droplets exist side by side. Due to an imbalance of water vapor pressure, the water droplets transfer to the ice crystals. … If the air is moist enough, the cooling causes it to reach saturation and visible water droplets form.

How are the four types of precipitation formed?

The main forms of precipitation include drizzle, rain, sleet, snow, graupel and hail. Precipitation occurs when a portion of the atmosphere becomes saturated with water vapor, so that the water condenses and “precipitates.

Which type of precipitation is most likely to occur when the cloud and air temperatures are above freezing?

If the air is above freezing, the precipitation will most likely be rain. If the air is below freezing, the precipitation will most likely be snow. When air temperature is only a few degrees above freezing, precipitation may fall as sleet. Hail is most commonly formed within the cumulonimbus clouds of thunderstorms.

What causes the upward movement of a cloud?

Lifting Due To Topography

If the air cools to its saturation point, the water vapor condenses and a cloud forms. Heating of the mountain slopes by the Sun also causes air to rise upward. These types of clouds are called “orographic clouds”, which develop in response to lifting forced by the topography of the earth.

Which of the following contributes to cloud formation?

The process of water changing from a gas to a liquid is called “condensation,” and when gas changes directly into a solid, it is called “deposition.” These two processes are how clouds form. … Those particles provide surfaces on which water vapor can change into liquid droplets or ice crystals.

How is precipitation related to high and low pressure air?

Basically, air cools as it rises, which can cause water vapor in the air to condense into liquid water droplets, sometimes forming clouds and precipitation. … Well, high pressure is associated with sinking air, and low pressure is associated with rising air.

What causes rain precipitation?

What causes rain? Clouds are made of water droplets. Within a cloud, water droplets condense onto one another, causing the droplets to grow. When these water droplets get too heavy to stay suspended in the cloud, they fall to Earth as rain.

What are the 6 types of precipitation?

The different types of precipitation are:

  • Rain. Most commonly observed, drops larger than drizzle (0.02 inch / 0.5 mm or more) are considered rain. …
  • Drizzle. Fairly uniform precipitation composed exclusively of fine drops very close together. …
  • Ice Pellets (Sleet) …
  • Hail. …
  • Small Hail (Snow Pellets) …
  • Snow. …
  • Snow Grains. …
  • Ice Crystals.

What causes clouds over the ocean to move to the land?

The warmer air close to the surface of the water cools and, thanks to its proximity to the water, becomes saturated with water vapor. This often leads to the famous low-level cloud formation. The wind then carries those clouds over land, sometimes as far inland as 80 miles or more!

What causes the difference in precipitation between the dry and rainy seasons?

During the dry season, dry air flows out to sea and during the wet season, moist air flows inland from the sea, rises and produces rain.

What affects precipitation?

The 3 main factors that affect precipitation are prevailing winds, the presence of mountains, and seasonal winds. … When humid winds blow from the ocean toward coastal mountains, they are forced to rise. The rising air cools and its water vapor condenses which form clouds.

What is a major factor in why there is a high amount of precipitation that falls near the equator?

Near the Earth’s equator, solar heating is intense year round. The Sun heats the ocean, evaporating tremendous amounts of water. The sun-warmed ocean heats the overlying air, which rises like a hot air balloon. As air rises, it cools, and water vapor condenses into rain.

What causes instability in the atmosphere?

Air is considered unstable, in the lowest layers of an air mass when the air is warmer and or more humid than the surrounding air. When this occurs the air will rise, as that air parcel is warmer than the air surrounding it. … This combination will gradually reduce the instability of the air mass.

What causes cool air parcel?

A rising parcel of air expands because the air pressure falls with elevation. This expansion causes the air to cool.

What makes air stable or unstable?

What makes air stable or unstable? It is the vertical profile of temperature, or lapse rate of the atmosphere, which determines whether an air mass is stable or not.

Why does a parcel of air expand as it rises upward through the atmosphere?

Why does a parcel of air expand as it rises upward through the atmosphere? It expands because “the atmospheric pressure decreases.” … The rate of heating or cooling of saturated air is the dry adiabatic rate.

How and why does the Air Parcel change?

A parcel of air expands and becomes less dense as it rises. This occurs because the air pressure lowers around the parcel as it increases in altitude. The volume of the parcel increases since it is expanding. The temperature of a rising parcel always cools even though it is becoming less dense.

What will happen to a parcel of air as it rises in the atmosphere?

The air parcel expands as it rises and this expansion, or work, causes the temperature of the air parcel to decrease. As the parcel rises, its humidity increases until it reaches 100%. When this occurs, cloud droplets begin forming as the excess water vapor condenses on the largest aerosol particles.

What factors control humidity?

Humidity depends on the temperature and pressure of the system of interest. The same amount of water vapor results in higher humidity in cool air than warm air. A related parameter is the dew point. The amount of water vapor needed to achieve saturation increases as the temperature increases.

When forces cause air to rise clouds are generated?

When air rises in the atmosphere it gets cooler and is under less pressure. When air cools, it’s not able to hold all of the water vapor it once was. Air also can’t hold as much water when air pressure drops. The vapor becomes small water droplets or ice crystals and a cloud is formed.

What is the relationship between humidity and cloud formation?

As a parcel of air rises, the moisture it contains cools and condenses out onto small particles of dust called cloud condensation nuclei until a cloud forms. As a volume of unsaturated air cools, its relative humidity increases.

What is the mechanism of precipitation formation in warm clouds?

The mechanism responsible for rain formation in these “warm” clouds is merging or “coalescence” among cloud droplets, which are first formed by vapor condensation. Coalescence is probably the dominant rain-forming mechanism in the tropics.

Where do clouds form in the atmosphere?


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