Clouds are formed in the Troposphere layer of the atmosphere.

Introduction:
The Earth's atmosphere is divided into several layers based on temperature and composition. The layer closest to the Earth's surface is called the Troposphere. This is where weather phenomena, such as clouds, occur.

Troposphere:
The Troposphere is the lowest layer of the atmosphere, extending from the Earth's surface up to an altitude of about 8 to 15 kilometers (5 to 9 miles). It is the layer where we live and where weather takes place.

Cloud Formation:
Clouds are formed when warm, moist air rises and cools. As the air rises, it expands and cools down due to the decrease in atmospheric pressure. As it cools, the moisture in the air condenses into tiny water droplets or ice crystals, forming clouds.

Moisture and Temperature:
The Troposphere contains the majority of the Earth's moisture, which is essential for cloud formation. Water evaporates from the Earth's surface and rises into the atmosphere. As the moist air rises, it encounters cooler temperatures. The combination of moisture and cooling leads to the formation of clouds.

Adiabatic Cooling:
As the moist air rises, it expands due to the decrease in pressure. This expansion causes the air to cool down adiabatically, which means it cools without exchanging heat with its surroundings. Adiabatic cooling is a key factor in cloud formation.

Condensation Nuclei:
Clouds do not form out of thin air. They require tiny particles called condensation nuclei on which the water vapor can condense. These particles can be dust, pollution, or even microscopic particles of salt from the ocean. They provide a surface for the water vapor to condense into liquid water droplets or freeze into ice crystals.

Conclusion:
Clouds are formed in the Troposphere layer of the atmosphere. The combination of moist air, cooling, adiabatic cooling, and the presence of condensation nuclei leads to the formation of clouds. Understanding cloud formation is important for studying weather patterns and predicting changes in the atmosphere.

Clouds are formed in the stratosphere because as we move above this layer, the temperature increases and there is little amount of water vapour are present due to which convection doesn't occur here and thus clouds formed here....