Define precipitation and explain form of precipitation.
Answers
Answered by
6
can be defined as earthward falling of water drops or ice particles that have formed by rapid condensation in the atmosphere.
Forms Of Precipitation
A. Liquid form
B. Solid form
C. Mixed form
1. Rain
1. Snow
1. Sleet
2. Drizzle
2. Hail
2 Hail
3.Shower
A. Liquid Form
1. Rain:
Rain is defined as precipitation of drops of liquid water. The clouds consists of minutes of minutes droplets of water of about 0.02 mm diameter. When these minute water droplets in clouds combine and form large drops that become so large that they can not remain suspended in the air and they fall down as rain. The droplets are formed by repaid condensation. The rain drops have diameters ranging from 0.05 to 0.06 cm (0.5 to 0,6 mm) The line joining the places of equal rainfall called Isohyets.
Types of Rain:
I) Convectional rains:
Due to heating, the air near the ground becomes hot and light and starts upward movement (This is known as convection.) as air moves upward it cools at the DALR (9.80C/km) and becomes saturated(having RH 100%) and dew point is reached where the condensation. begins . This level or height is known as condensation level. Above condensation level air cools at SALR (5 0C/km) clouds are formed. Then further condensation results into precipitation. These rains are known convectional rains.
II) Ographic or relief rains:
When the moist air coming from sea encounters mountain or relief barrier, it can not move horizontally and has to overcome mountain. When this air rises upward, coolsdown, cloud is formed and condensation starts and giving precipitation. These rains are known as or orographic rains thus high rains are possible on the windward side of the mountain. After crossing the mountain divide, when air descends downward, the air is compressed and it warmed up at DALR. This warm air does not give any precipitation on the leeward region. This is known as rain shadow region.
III) Cyckibuc/Frontal and Convergent rains:
Frontal precipitation is produced when two opposing air currents with different temperature meet, vertical lifting takes place which gives rise to condensation and precipitation. When the humus and warm air mass meets the cold air mass, the colder air being denser tends to push below the warmer air and replace it. The boundary zones along which two air masses meet are called as fronts. When the mixing of warm and moist air with cold air mass takes place, the temperature of the warm and air falls down, saturation occurs and may give precipitation and it also responsible for cyclone formation and rains received from cyclones are called cyclonic reins.
Thunder Storms:
It is the atmospheric disturbance which is always accompanied by thunder and lightening and sometimes by hail. It is a local storm covering comparatively small area and often causing damage. Its chief
Characteristics are an immense cumulo-nimbus cloud accompanied by copious precipitation, a marked drop in temperature and a more or less destructive out rushing squall wind which precedes the rainfall. Thunder storms occur in every part of the world and their frequency decreases with increase in latitude.
Forms Of Precipitation
A. Liquid form
B. Solid form
C. Mixed form
1. Rain
1. Snow
1. Sleet
2. Drizzle
2. Hail
2 Hail
3.Shower
A. Liquid Form
1. Rain:
Rain is defined as precipitation of drops of liquid water. The clouds consists of minutes of minutes droplets of water of about 0.02 mm diameter. When these minute water droplets in clouds combine and form large drops that become so large that they can not remain suspended in the air and they fall down as rain. The droplets are formed by repaid condensation. The rain drops have diameters ranging from 0.05 to 0.06 cm (0.5 to 0,6 mm) The line joining the places of equal rainfall called Isohyets.
Types of Rain:
I) Convectional rains:
Due to heating, the air near the ground becomes hot and light and starts upward movement (This is known as convection.) as air moves upward it cools at the DALR (9.80C/km) and becomes saturated(having RH 100%) and dew point is reached where the condensation. begins . This level or height is known as condensation level. Above condensation level air cools at SALR (5 0C/km) clouds are formed. Then further condensation results into precipitation. These rains are known convectional rains.
II) Ographic or relief rains:
When the moist air coming from sea encounters mountain or relief barrier, it can not move horizontally and has to overcome mountain. When this air rises upward, coolsdown, cloud is formed and condensation starts and giving precipitation. These rains are known as or orographic rains thus high rains are possible on the windward side of the mountain. After crossing the mountain divide, when air descends downward, the air is compressed and it warmed up at DALR. This warm air does not give any precipitation on the leeward region. This is known as rain shadow region.
III) Cyckibuc/Frontal and Convergent rains:
Frontal precipitation is produced when two opposing air currents with different temperature meet, vertical lifting takes place which gives rise to condensation and precipitation. When the humus and warm air mass meets the cold air mass, the colder air being denser tends to push below the warmer air and replace it. The boundary zones along which two air masses meet are called as fronts. When the mixing of warm and moist air with cold air mass takes place, the temperature of the warm and air falls down, saturation occurs and may give precipitation and it also responsible for cyclone formation and rains received from cyclones are called cyclonic reins.
Thunder Storms:
It is the atmospheric disturbance which is always accompanied by thunder and lightening and sometimes by hail. It is a local storm covering comparatively small area and often causing damage. Its chief
Characteristics are an immense cumulo-nimbus cloud accompanied by copious precipitation, a marked drop in temperature and a more or less destructive out rushing squall wind which precedes the rainfall. Thunder storms occur in every part of the world and their frequency decreases with increase in latitude.
Answered by
3
Precipitation is the falling of water from the sky in different forms. They all form from the clouds which are raised about 8 to 16 kilometers (4 to 11 miles) above the ground in the earth’s troposphere. Precipitation takes place whenever any or all forms of water particles fall from these high levels of the atmosphere and reach the earth surface. The drop to the ground is caused by frictional drag and gravity. When one falling particle drops from the cloud, it leaves behind a turbulent wake, causing faster and continued drops.
Different Types of Precipitation
Rain
Rain is any liquid that drops from the clouds in the sky. Rain is described as water droplets of 0.5 mm or larger. Droplets less than half a millimeter are defined as drizzle. Raindrops frequently fall when small cloud particles strike and bind together, creating bigger drops. As this process continues, the drops get bigger and bigger to an extent where they become too heavy suspend on the air. As a result, the gravity pulls then down to the earth.
When high in the air, the raindrops start falling as ice crystals or snow but melt when as they proceed down the earth through the warmer air. Rainfall rates vary from time to time, for example, light rain ranges from rates of 0.01 to 0.1 inches peer hour, moderate rain from 0.1 to .3 inches per hour, and heavy rain above 0.3 inches per hour. Rain is the most common component of the water cycle and replenishes most of the fresh water on the earth.
Snow
Snow occurs almost every time there is rain. However, snow often melts before it reaches the earth surface. It is precipitation in the form of virga or flakes of ice water falling from the clouds. Snow is normally seen together with high, thin and weak cirrus clouds. Snow can at times fall when the atmospheric temperatures are above freezing, but it mostly occur in sub-freezing air. When the temperatures are above freezing, the snowflakes can partially melt but because of relatively warm temperatures, the evaporation of the particles occurs almost immediately.
This evaporation leads to cooling just around the snowflake and makes it to reach to the ground as snow. Snow has fluffy, white and soft structure and its formation is in different shapes and ways, namely flat plates and thin needles. Each type of snow forms under specific combinations of atmospheric humidity and temperatures. The process of snow precipitation is called snowfall.
Sleet (Ice Pellets)
Sleet takes place in freezing atmospheric conditions. Sleet, also known as ice pellets, form when snow falls into a warm layer then melts into rain and then the rain droplets falls into a freezing layer of air that is cold enough to refreeze the raindrops into ice pellets. Hence, sleet is defined as a form of precipitation composed of small and semitransparent balls of ice. They should not be confused with hailstones as they are smaller in size.
Sleet is often experienced during thunderstorms and is normally accompanied with frosty ice crystals that form white deposits and a mixture of semisolid rain and slushy snow. Ice pellets (sleet) bounce when they hit the ground or any other solid objects and falls with a hard striking sound. Sleet don not freeze into a solid mass except when it combines with freezing rain.
Freezing Rain
Freezing rain happens when rain falls during below freezing conditions/temperatures. This normally results in the solidification of rain droplets. The raindrops are super-cooled while passing through the sub-freezing layer in the atmosphere and freezes by the time it reaches the ground. During freezing rains, it is common to witness an even coating of ice on cars, streets, trees, and power lines. The resulting coating of ice is called glaze and it can build up to a thickness of several centimeters. Freezing rains pose a huge threat to normal operations of roadway transportation, aircrafts, and power lines.
Different Types of Precipitation
Rain
Rain is any liquid that drops from the clouds in the sky. Rain is described as water droplets of 0.5 mm or larger. Droplets less than half a millimeter are defined as drizzle. Raindrops frequently fall when small cloud particles strike and bind together, creating bigger drops. As this process continues, the drops get bigger and bigger to an extent where they become too heavy suspend on the air. As a result, the gravity pulls then down to the earth.
When high in the air, the raindrops start falling as ice crystals or snow but melt when as they proceed down the earth through the warmer air. Rainfall rates vary from time to time, for example, light rain ranges from rates of 0.01 to 0.1 inches peer hour, moderate rain from 0.1 to .3 inches per hour, and heavy rain above 0.3 inches per hour. Rain is the most common component of the water cycle and replenishes most of the fresh water on the earth.
Snow
Snow occurs almost every time there is rain. However, snow often melts before it reaches the earth surface. It is precipitation in the form of virga or flakes of ice water falling from the clouds. Snow is normally seen together with high, thin and weak cirrus clouds. Snow can at times fall when the atmospheric temperatures are above freezing, but it mostly occur in sub-freezing air. When the temperatures are above freezing, the snowflakes can partially melt but because of relatively warm temperatures, the evaporation of the particles occurs almost immediately.
This evaporation leads to cooling just around the snowflake and makes it to reach to the ground as snow. Snow has fluffy, white and soft structure and its formation is in different shapes and ways, namely flat plates and thin needles. Each type of snow forms under specific combinations of atmospheric humidity and temperatures. The process of snow precipitation is called snowfall.
Sleet (Ice Pellets)
Sleet takes place in freezing atmospheric conditions. Sleet, also known as ice pellets, form when snow falls into a warm layer then melts into rain and then the rain droplets falls into a freezing layer of air that is cold enough to refreeze the raindrops into ice pellets. Hence, sleet is defined as a form of precipitation composed of small and semitransparent balls of ice. They should not be confused with hailstones as they are smaller in size.
Sleet is often experienced during thunderstorms and is normally accompanied with frosty ice crystals that form white deposits and a mixture of semisolid rain and slushy snow. Ice pellets (sleet) bounce when they hit the ground or any other solid objects and falls with a hard striking sound. Sleet don not freeze into a solid mass except when it combines with freezing rain.
Freezing Rain
Freezing rain happens when rain falls during below freezing conditions/temperatures. This normally results in the solidification of rain droplets. The raindrops are super-cooled while passing through the sub-freezing layer in the atmosphere and freezes by the time it reaches the ground. During freezing rains, it is common to witness an even coating of ice on cars, streets, trees, and power lines. The resulting coating of ice is called glaze and it can build up to a thickness of several centimeters. Freezing rains pose a huge threat to normal operations of roadway transportation, aircrafts, and power lines.
Similar questions
English,
8 months ago