The sun and Earth are nearly 150 Kilometers apart. Ozone makes up a big part of the separation of the troposphere of Earth and the solar radiation coming from the sun. The gases are not what makes up the clouds but water vapor is. As gravity pulls earth to the surface it is measured in per square inch and milibars. and height is measured in kilometers. The Urban heat island effect is usually in place in big cities.
clouds are defined by their shape and form, cloud based altitudes, and if they are participating. the Humidity has a huge impact as well, because the water vapors are stuck between air molecules.
