Based on the vertical temperature distribution in Earth's atmosphere, four semi-horizontal layers or "spheres" can be distinguished: the troposphere, stratosphere, mesosphere, and thermosphere,. These layers are separated by...

That layer of the earth’s atmosphere extending between the STRATOSPHERE and the THERMOSPHERE. It ranges in temperature from around 0°C at the STRATOPAUSE to around −80°C at the...

That layer of the earth’s atmosphere which forms a junction between the MESOSPHERE and the THERMOSPHERE at around 80 km from the earth’s...

The mesosphere (from the Greek words mesos = middle and sphaira = ball) is the layer of the Earth's atmosphere that is directly above the stratosphere and directly below the thermosphere. The mesosphere is located from about 50 km to 80-90 km altitude...

ABSTRACT Satellite observations indicate that quasi-stationary planetary waves often exist to at least 100 km in the winter mesosphere. Waves are also seen in the summer upper mesosphere. A three-dimensional numerical model was used to simulate these waves and to diagnose the physical...

New findings from the Middle Atmosphere High Resolution Spectrograph Investigation (MAHRSI) confirm that high levels of water vapor can be found in the upper mesosphere. The finding supports the theory that comets about the size of a house collide each day with the Earth's...

A Hampton University professor is shedding new light on night-shining clouds that might be affected by climate change. Jim Russell is the lead scientist for the NASA-funded AIM satellite, the first to study the wispy "noctilucent" clouds, which only appear above Earth's poles.Russell, an atmospheric...