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Atmosphere_layers,_temperature_and_airborne_emission_sources.png (504 × 588 pixels, file size: 322 KB, MIME type: image/png) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
A 5 km (3.1 mi; 16,000 ft) deep sodium layer is located between 80–105 km (50–65 mi; 262,000–344,000 ft). Made of unbound, non-ionized atoms of sodium, the sodium layer radiates weakly to contribute to the airglow. The sodium has an average concentration of 400,000 atoms per cubic centimetre.
Diagram of the five primary layers of the Earth's atmosphere (not to scale). From Earth's surface to top of stratosphere (50 km) is slightly less than1% of Earth's radius. Between troposphere & stratosphere is the tropopause.
The layers of the atmosphere are drawn to precise scale. Objects within them, such as the weather balloon are not. It is designed to be displaced at its native resolution (430×700px) or higher. It will render incorrectly (things start disappearing) below that.
This image has been assessed under the valued image criteria and is considered the most valued image on Commons within the scope: Diagram of Earth's atmosphere. You can see its nomination here . Translations
This diagram uses translateable embedded text. Licensing Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License , Version 1.2 or any later version published by the Free Software Foundation ; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
The troposphere is denser than all its overlying layers because a larger atmospheric weight sits on top of the troposphere and causes it to be most severely compressed. Fifty percent of the total mass of the atmosphere is located in the lower 5.6 km (3.5 mi; 18,000 ft) of the troposphere.
Diagram showing the five primary layers of the Earth's atmosphere: exosphere, thermosphere, mesosphere, stratosphere, and troposphere. The layers are to scale. From the Earth's surface to the top of the stratosphere (50km) is just under 1% of Earth's radius.