Sometimes hails are also associated with it. The main reason is that in the mid latitudes it occurs only in warm season when the vegetation is very active. It has been found that a drop of 500µ diameter would hardly take 10 minutes to reach the ground from a cloud base of 1000 m above the earth surface. Stronger the updraft, greater is the height of the cloud.

As a result, the clouds on the leeward side disappear. Graupel, also known as "snow pellets" or "soft hail," is white, like snow. Solar radiation is the main source of heat to produce convection currents in the air. The main cause of this precipitation is the mixing of air along the front.

As a result, the rainfall percolates in the soil and continues for hours together. During winter season, cyclonic precipitation occurs in the northern parts of India. It generally occurs in the summer months during evening time. These are known as rain shadow areas. Types de précipitations Toute précipitation nécessite la condensation de la vapeur d'eau. Convective precipitation is less effective for the crop growth than the steady rain. Lorsque les deux solutions sont mélangés, les particules d'argent et de chlore sont unies et produisent un solide qui précipitera. Condensation of water vapours leads to the formation of clouds. Basically, this process involves the precipitation of Fe 2 + and Fe 3 + salt (e.g., chlorides, sulfates, and nitrates) aqueous solutions by addition of a base (e.g., NaOH). Pour que des gouttelettes d'eau se forment et donnent un nuage puis de la précipitation, il faut un mécanisme pour amener l'air à saturation. Convectional Precipitation (Convective type), and This type of precipitation occurs when the moist air mass rises on the windward side of the mountain. Rising air mass becomes saturated as it gets cooled adiabatically.

When two air masses with different temperature and moisture content meet at a certain angle, the warm and moist air is forced to rise over the heavier cold air mass. Precipitation is a major component of the water cycle, and is responsible for depositing most of the fresh water on the planet.Approximately 505,000 km 3 (121,000 mi 3) of water falls as precipitation each year, 398,000 km 3 (95,000 cu mi) of it over the oceans. In tropical region, there is little difference in the temperature and humidity of the converging air masses. i. The large drops grow at the cost of smaller ones. The water droplets in a cloud do not freeze at 0°C but remain in the form of water up to -40°C. Frontal precipitation occurs when the warm and moist air gradually rises over the cold air mass. Tiffany Means is a meteorologist and member of the American Meteorological Society who has worked for CNN, the National Oceanic and Atmospheric Administration, and more. It means that some special processes are working in a cloud from which precipitation falls. Total amount of water falling on a given area in the form of rain or snow or hail is known as precipitation. When the liquid water increases, the strength of the updraft decreases and downdraft starts increasing. If supercooled water droplets freeze onto falling snowflakes, you get what's called "graupel." La précipitation se produit lorsque l' air local est saturé avec de la vapeur d'eau, et ne peut plus maintenir le niveau de vapeur d'Wator sous forme gazeuse.

On the mountains, this type of precipitation is of a very short duration and consists of heavy showers. When this happens, the snow crystal loses its identifiable six-sided shape and instead becomes a clump of snow and ice. ii. 2. Convective precipitation is less effective for the crop growth than the steady rain. In both the processes, precipitation will occur for a longer period, if there is sufficient supply of moisture. Precipitation is caused by condensation of water vapours of the air mass. Ces pluies alimentent des lacs ou des mers de méthane ou d'éthane liquide au pôle. Above this value, they become unstable and break into smaller droplets while falling.