What is the total mass of Earth's atmosphere?
The total mass of Earth's atmosphere is about 5.15 quadrillion kilograms. Three quarters of that mass is contained within the first 11 kilometers of the surface.
Common questions about Atmosphere of Earth
Short answers, pulled from the story.
What are the main layers of Earth's atmosphere and their heights?
Earth's atmosphere is stratified into five main layers: the troposphere extends from the surface to about 11 kilometers, the stratosphere reaches up to 50 kilometers, the mesosphere extends to 85 kilometers, the thermosphere goes to the thermopause, and the exosphere extends to the solar wind boundary. The troposphere contains roughly 80% of the atmosphere's mass and is where nearly all weather phenomena occur.
How has human activity changed Earth's atmosphere since 1850?
Human activity has increased the concentrations of greenhouse gases such as carbon dioxide, methane, and nitrous oxide since 1750. Global average surface temperatures were 1.1 degrees Celsius higher in the 2011, 2020 decade than they were in 1850.
What gases make up dry air on Earth?
Dry air consists of 78.08% nitrogen, 20.95% oxygen, 0.93% argon, and 0.04% carbon dioxide. Water vapor averages around 1% at sea level and 0.4% over the entire atmosphere.
When did the Great Oxygenation Event occur in Earth's history?
The Great Oxygenation Event occurred during the early Proterozoic eon, with ancient sediments in Gabon dating from between 2.15 and 2.08 billion years ago providing a record of this oxygenation evolution. This event was driven by a billion years of cyanobacterial photosynthesis.
Who were the early pioneers of atmospheric science?
Early pioneers in atmospheric science include Léon Teisserenc de Bort and Richard Assmann. They laid the groundwork for understanding the atmosphere's structure and behavior through instrumented balloon soundings and the study of temperature profiles.