What is precipitation? Precipitation is any form of moisture which falls to the earth. This includes rain, snow, hail and sleet. Precipitation occurs when water. Frontal rainfall happens where warm fronts meet cold fronts. The British Isles are Convectional rainfall is common where the sun heats the land near the sea. Convection occurs when the Earth’s surface, especially within a Convective rain and light precipitation are the result of.

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What is high pressure? Convectional rainfall is very common in areas where the ground is heated by the hot sun, such as the Tropics. Heavy rain falling in Kolkata, India.

British weather and climate

This occurs when less dense moist air cools, usually when an airmass rises through the atmosphere. Stage 2 As the air rises it cools and water vapour condenses to form clouds. Precipitation can fall in either liquid or solid phases, or transition between them at the freezing level. Tropical downpour in Hong Kong. Convwctional the air reaches saturation point also known as condensation point and dew point the water vapour condenses and forms tiny droplets of water.

Weather and Climate – Half a minute This activity is provided by our sister site www. Clouds form and precipitation occurs.

When classified according to the rate of precipitation, rain can be divided into categories. In turn, precipitation can enhance the temperature and dewpoint contrast along a frontal boundary. Warm fronts occur where rainfakl air pushes out a previously extant cold air mass. What is low pressure? Archived at the Wayback Machine. Please Support Internet Geography If you’ve found the resources on this site useful please consider making a secure donation via PayPal to support the development of the site.


All rain is the same. Their respective intensities are classified either by rate of fall, or by visibility restriction.

Warm wet air is forced to rise over high land.

Weather and Climate – Grade or no grade game This game is provided by our sister site www. The sun heats the ground and warm air rises. They form in the Atlantic and move east across the country, bringing changeable weather.

Top Pages Kerala flood case study. Orographic precipitation occurs when moist air is forced upwards over rising terrain, such as a mountain.

Convectional rainfall diagram | tillsgeogblog

When the condensation point is reached large cumulonimbus clouds are formed. Light rain describes rainfall which falls at a rate of between a trace and 2. Frozen forms of precipitation include snowice needlessleethailand graupel. Convective precipitation occurs when air rises vertically through the temporarily self-sustaining mechanism of convection.

What is convectional rainfall? – Internet Geography

It happens as the result of warm, moist air being cooled, leading to condensation and in turn rain. Convective precipitation is generally more intense, and of shorter duration, than stratiform precipitation.

Clouds form and it rains. Prevailing winds come from the south west carrying moisture from the Atlantic Ocean. Moderate snow describes snowfall with visibility restrictions between. Orographic or relief rainfall is caused when masses of air are forced up the side of elevated land formations, such as large mountains often referred to as an upslope effect. This page was last edited on 16 Decemberat What is population distribution?


Stratiform precipitation occurs when large air masses rise diagonally as larger-scale atmospheric dynamics force them to move over each other. UK Weather and Climate What is an air mass?

These tiny droplets of water from clouds. Archived from the original on Complex forces cause the water droplets to fall as rainfall.

Heat from the sun transforms water in oceans and seas into a gas called water vapour. As the air rises it cools and condenses. Windward sides face the east-to-northeast trade winds and receive much more rainfall; leeward sides are drier and sunnier, with less rain and less cloud cover. Convective and stratiform rainfall in the tropics.

British rainfall Depressions pass over Britain frequently. In the initial stages of this precipitation, it generally falls as showers with rapidly changing intensity.

Rain or drizzle which ranfall on contact within a subfreezing air mass gains the preceding adjective “freezing”, becoming known as freezing rain or freezing drizzle. If this process continues rainfall will occur. What is convectional rainfall?