EESA01H3 Lecture 10: lecture 10 enviro sci
14 Dec 2015
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Then there are other gases that are present too. Thin, but of atmospheric mass because air is much denser near the surface of the earth. Where most of the pollution we emit is trapped. Decreasing temperature from bottom to top of troposphere (which is called the tropopause) Tropopause forms a boundary between troposphere stratosphere because of temperature gradients, for very limited mixing between the and which allows layers. Increase temperature because of more ozone in the upper layers of the stratosphere, much less uv radiation gets to the warmer higher up and lower parts of the stratosphere, so it is colder lower down. Cause it absorbs a lot of solar radiation. Mesosphere: decreased solar heating and increased cooling by co2 radiative emission lead to temp. Thermosphere: hottest at top because of heating by small amount of residual oxygen. Increased temperature increased altitude of the part of the atmosphere. Temperature trends in and between atmospheric layers control mixing .
