Frontal Rainfall This rainfall occurs when a warm, tropical air mass comes in contact with a cold, polar air mass. It is very common in Britain and Ireland. Because the air is in the warm front, then it rises over the cold front. The air is cooled and so condenses to form a stratus cloud.
Where do we get frontal rainfall?
Frontal rain is found where warm air meets cold at the cold and warm fronts in a depression (Figure 1).
What is the frontal rainfall?
Frontal rain
This is when cold air meets warm air in a ‘weather front’. Warm air rises, so when it bumps into the cold air, it rises above it. However, like when you’re climbing a hill, the higher you go up in the atmosphere, the colder it is. So the warm air that has risen up in the atmosphere now begins to cool down.
Where does frontal rainfall occur in India?
Frontal rainfall
The cyclonic system will bring large amount of rainfall as it approaches land. Similarly, temperate cyclones forms rainfall at the border of warm and cold fronts. Ex: Coastal India, especially Bay of Bengal states receive frontal rainfall.
What season does frontal rainfall occur?
Frontal rainfall occurs when a warm front meets a cold front. The heavier cold air sinks to the ground and the warm air rises above it. When the warm air rises, it cools.
What is another name of frontal rainfall?
Cyclonic rainfall is also called frontal rainfall because it occurs along the fronts of a cyclone. Frontal rainfall occurs when warm air and cool air meet each other. Warm air is lighter than cool air. So, the warm air rises above the cool air.
What type of rainfall is received in mountainous areas?
orographic rainfall
The type of precipitation in mountainous areas is called a relief rainfall or orographic rainfall.
Why is cyclonic rainfall also called frontal rainfall?
Cyclonic activity causes cyclonic rain and it occurs along the fronts of the cyclone. When two masses of air of unlike density, temperature, and humidity meet then it is formed. The layer that separates them is known as the front. A warm front and the cold front are the two parts of the front.
What is the difference between frontal rainfall and cyclonic rainfall?
Frontal precipitation is the result of lifting of lighter warm moist air over more dense cold air. Generally, most storms in the Great Plains states are cyclonic. Convective precipitation results from the lifting or upward movement of air that is warmer and lighter than its colder denser surroundings (figure 3).
What is the difference between orographic and frontal rain?
The result is rain because the warm moist air rises when it comes in contact with the heavier cold air, and loses its capacity to hold moisture, and it rains. Orographic precipitation is caused by a geographical feature like an island or a mountain range that causes moisture-laden air to rise, causing rain.
Which type of rainfall is received in India?
The Indian subcontinent experiences two main types of rainfall- the southwest monsoon and the northeast monsoon.
What type of rainfall occurs in Mawsynram?
Mawsynram experiences Orographic rainfall as it is located on the windward side of Garohill. Mawsynram lies in the funnel-shaped depression caused by the Khasi range in Meghalaya. The Bay of Bengal branch of monsoons is trapped in it and causes heavy rainfall.
What type of rainfall does India receives the most?
- The most common type of rainfall in India is relief rainfall.
- It is formed when air is raised over hills and mountains. As it rises the air gets cooled and condensed to form rain. It usually occurs in coastal areas.
Is frontal rain common?
Frontal rain is common in mid-latitudes due to the meeting of the sub-tropical and polar air masses. It is caused by convergence of two different air masses with different temperatures and other physical properties. When warm and cold air masses confront each other, the warmer air generally climbs above the colder air.
What is 4 o’clock rainfall called?
convectional rain
In equatorial regions, convectional rain occurs almost daily in the afternoons. It generally occurs at 4 pm thats why it is known as 4o Clock Rain.
Where does rain occur in a cold front?
Rain occurs along and behind the cold front. Since cold air is more dense and heavier than warm air, the cold air wedges itself under the warm air, causing the warm air to rise. This rapid process is called frontal lifting and allows for precipitation to develop along and behind the frontal boundary.
Which type of rainfall is received around water bodies?
➢ This is the type of rainfall received in areas with lakes, water bodies and forests. Convectional rainfall usually falls in afternoons.
What are three types rainfall?
There are three types of rain that are Convectional rainfall, Orographic or relief rainfall Cyclonic or frontal rainfall.
Which type of rainfall is received around?
The causes of relief rainfall, frontal rainfall and conventional rainfall are examined. Relief rainfall occurs when air has been blown over the sea and is then forced up over an area of high land.
What type of rainfall is received in desert areas?
Humidity—water vapor in the air—is near zero in most deserts. Light rains often evaporate in the dry air, never reaching the ground. Rainstorms sometimes come as violent cloudbursts. A cloudburst may bring as much as 25 centimeters (10 inches) of rain in a single hour—the only rain the desert gets all year.
Which rainfall is received around forests?
Convectional rainfall
Convectional rainfall is a type of rainfall received in areas near forests and water bodies e.g. lakes and rivers.