Geography

Frost in the atmosphere Frost forms on cold surfaces when condensation takes place below freezing point (0°C), i.e. the dew point is at or below…

Dew in the atmosphere When the moisture is deposited in the form of water droplets on cooler surfaces of solid objects (rather than nuclei in…

Water vapor and dew point in Atmosphere Water vapor present in the air is known as humidity. It is expressed quantitatively in different ways. The…

Evaporation in Atmosphere The amount of water vapor in the atmosphere is added or withdrawn due to evaporation and condensation respectively. Evaporation is a process…

Condensation in Atmosphere The transformation of water vapor into water is called condensation. Condensation is caused by the loss of heat. When moist air is…

Tropical cyclones are violent storms that originate over oceans in tropical areas and move over to the coastal areas bringing about the large-scale destruction caused…

Extra Tropical Cyclones The systems developing in the mid and high latitude, beyond the tropics are called the middle latitude or extra tropical cyclones. The…

Thunderstorms and Tornadoes A storm (produced by a cumulonimbus cloud) that includes rain showers, lightning, and thunder. Severe local storms are thunderstorms and tornadoes. They…

Seasonal Wind The pattern of wind circulation is modified in different seasons due to the shifting of regions of maximum heating, pressure and wind belts.…

Fronts of Air Masses When two different air masses meet, the boundary zone between them is called a front. It is defined as the transition…