Trace gas Trace gas The most abundant gases in the atmosphere are nitrogen (78.1%), oxygen (20.9%), and argon (0.934%). Combined, oxygen, argon, and nitrogen make up 99.934% of the gases in the atmosphere (not including water vapor). The other gases that are not part of the 99.934% of the atmosphere are called trace gases. The abundance of a trace gas can range from a few parts per trillion (ppt) by volume to several hundred parts per million by volume (ppmv). When a trace gas is added into the atmosphere, that process is called a "source". There are two possible types of sources
Atmosphere (Eloy Fritsch album) Atmosphere (Eloy Fritsch album) Atmosphere: Electronic Suite is an album by Eloy Fritsch, a keyboard player known for his work in the progressive rock group Apocalypse. As a solo artist he creates cosmic electronic music. The closest comparison would be probably Vangelis, if considering his early work, which included many analogue instruments. Nevertheless, Fritsch has found his own style within melodic Electronic music framework. The opus reveals once again Fritsch’s ecological convictions: he presently defends the virtues of the gas envelope that allow everyone to live on Earth: the Atmosphere, a theme which is carried over to the album art