Air
This is considered the mixture of gases that make up the earth’s atmosphere. The principal gases that compose dry air are Nitrogen (N2) at 78.09%, Oxygen (O2) at 20.946%, Argon (A) at 0.93%, and Carbon Dioxide (CO2) at 0.033%. One of the most important constituents of air and most important gases in meteorology is water vapor (H2O).
Atmosphere
The gaseous or air portion of the physical environment that encircles a planet. In the case of the earth, it is held more or less near the surface by the earth’s gravitational attraction. The divisions of the atmosphere include the troposphere, the stratosphere, the mesosphere, the ionosphere, and the exosphere.
Nitrogen (N2)
A colorless, tasteless, odorless gas that is the most abundant constituent of dry air. It comprises 78.09% of the Earth’s atmosphere.
Oxygen (O2)
A colorless, tasteless, odorless gas that is the second most abundant constituent of dry air, comprising 20.946%.
Argon (A)
A colorless, odorless inert gas that is the third most abundant constituent of dry air, comprising 0.93% of the total.
Carbon Dioxide (CO2)
A heavy, colorless gas that is the fourth most abundant constituent of dry air, comprising 0.033% of the total.
Meteorology / Meteorologist
The science and study of the atmosphere and atmospheric phenomena. Various areas of meteorology include agricultural, applied, astrometerology, aviation, dynamic, hydrometeorology, operational, and synoptic, to name a few. A scientist who studies the atmosphere and atmospheric phenomena.
Water Vapor (H2O)
Water in gaseous form. It is one of the most import constituents of the atmosphere. Due to its molecular content, air containing water vapor is lighter than dry air. This contributes to the reason why moist air has a tendency to rise.