Convectional rainfall is found in equatorial region

Question Download Solution PDF Consider the following statements 1.Convectionrainfall occurs only in equatorial region. 2. On the western margins of the continents in the middle and high latitudes, the rainfall is highly cyclonic. 3. The east Himalayan region of India gets high rainfall from the south west monsoon in summer. Which one of the statements given above the correct? The correct answer is 2 and 3. Key Points • Convectional rainfall • It occurs when the energy of the sun heats theEarth, causing water to evaporate to form water vapour. • Convectional rainfall is prevalent in equatorial regions. • It is also found in the northern hemisphere . Hence, Statement 1 is not correct. • In these, the warm air rises up and expands then, reaches a cooler layer and saturates, then condenses mainly in the form of cumulus or cumulonimbus clouds. • In the equatorial regions, the precipitation due to convectional rainfall occurs in the afternoon. • Desert • A desert is a barren area of landscape where little precipitation occurs and consequently, living conditions are hostile to plant and animal life. • In other words, it is an extremely dry area of land with sparse vegetation. • The lack of vegetation exposes the unprotected surface of the ground to the processes of denudation (the wearing away of the Earth's surface by moving water, by ice, by wind, and by waves, leading to a reduction in elevation and in relief of landforms and of landscapes). • On the western margins of the co...

Equatorial climate Location Equatorial or tropical rainforests are found near the equator . Places which experience an equatorial climate include parts of: • Central America , eg Costa Rica • South America, eg Brazil • Central Africa , eg Kenya • South-East Asia , eg Borneo Description of the equatorial climate Igua in the Iguazu river on the border of Brazil and Argentina Rainforests are located in the equatorial climate region. They are hot and wet all year round – this creates a humid climate. The annual rainfall is high as it rains almost every day. The temperatures are constant all year round – the temperature range is usually only a few degrees. There are no seasons. The climate graph shows average rainfall and temperatures in Manaus, located in the Amazon rainforest in Brazil. The highest monthly rainfall is in March with over 300 mm and the lowest rainfall occurs in August with under 50 mm. Temperatures vary little throughout the year. The highest monthly temperature is 29°C which occurs in September. The lowest monthly temperature is 26°C which occurs in December and January. The annual temperature range is 2°C. Equatorial region - Manaus, Brazil

Contents • Why does convectional rain occur in summer? • How convection rainfall is formed? • Where does convectional rainfall occur? • What is another name for Convectional rainfall? • Why is Convectional rainfall is called 4 o’clock rainfall? • What is convection rain? • What time does Convectional rainfall occur? • What are the 4 types of rainfall? • What is Convectional rainfall answer? • Why there is no rain during summer? • Does heat cause rain? • What are the 3 main causes of rainfall? • What are the 3 types of rain? • What are the 8 types of precipitation? • What is a frontal rainfall? • How is rainfall caused? • How does orographic rainfall occur? • Which region has the highest amount of precipitation? • Is fog a precipitation? • What are the characteristics of convectional rainfall? • Which train is called as 4 o’clock rain? • What is the another name of cyclonic rainfall? • Is relief a rainfall? Convectional rainfall When the land warms up, it heats the air above it. This causes the air to expand and rise. As the air rises it cools and condenses. If this process continues then rain will fall. Why does convectional rain occur in summer? During summer, the sun being overhead, there is intense heating of the land and the air above as compared to the surroundings. The air. on being heated, becomes lighter and rises. … This process of rising air is called convection and the type of rainfall which occurs during peak summer is called convectional rainfall. How convecti...

Water and nutrient cycles in the rainforest ecosystem The rainforest ecosystem has a distinctive water and nutrient cycle due to: • high convectional rainfall • high levels of humidity • abundant vegetation • nutrient-rich but shallow soil Rainforest nutrient and water cycle Rainforest water cycle The roots of trees, plants and shrubs take up water from the soil. The rain is intercepted by trees as it falls. As the temperature in the rainforest increases during the day, it causes the water to evaporate into the atmosphere. This water vapour cools, condenses and forms clouds to make the next day's rain. This is known as convectional rainfall. The whole process is repeated daily and the cycle continues. Rainforest nutrient cycle The warm, damp conditions on the forest floor and the abundance of insects enables the rapid breakdown of dead leaves and plant material. This humus provides nutrients that are easily absorbed by plant roots. Because of the abundance of rainforest vegetation, nutrients are used up quickly. This cycle is continuous as long as deforestation does not occur. Unfortunately, if the protective canopy (umbrella) of vegetation is removed, the soil quickly becomes infertile as nutrients are leached out of the soil, and the top soil is easily washed away into rivers by heavy rainfall.

Which rainfall is known as the 4 o'clock rainfall? Convectional Rain:This type of rain is common in the hot and wet tropical rain forests of central Africa, Amazon basin of South America and the islands of south-east Asia. Continuous heating of the earth in the day causes hot convectional currents to raise Water keeps on evaporating and rising up. On reaching the upper layers of the atmosphere they cool, condense and from cumulonimbus clouds. In the late afternoon the clouds burst into a heavy downpour, often accompanied by thunder and lighting. It usual occurs at about 4 pm, so convectional rain is called 'four o'clock rain' and occurs daily in the equatorial regions. Is amount of rainfall less in the lower latitudinal regions? No!!! Amount of rainfall is not less in the lower latitudinal regions. Polar regions receive less heat so the process of evaporation is very slow there. As a result, it receives less rainfall. Thus,the regions having higher latitudes receives less rainfall. Climate varies deserts rain forests monsoon regions and moderate regions? The desert climate is also called the arid climate. Desert climates are mostly hot, but can be cold or moderate and little to no rainfall is experienced. Tropical forests are also called equatorial climates. It rains just about every day and it's hot and humid every day. The climate in the monsoon regions are marked by wet and dry seasons. Moderate regions have a temperate climate. These regions don't experience extreme ho...

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