0 the layer of gases surrounding the earth from the surface up to a height of about ten kilometres
1 the layer of gases surrounding the earth from the surface to about 6 miles
Above the troposphere is the stratosphere which is much more stably stratified.
The lower atmosphere (the troposphere) thus experiences a positive lapse rate (negative temperature change with height).
This assumption requires the aspect ratio to be small, troposphere and 10-3 in the stratosphere.
For example, the passing of air over mountains and hills can cause the formation and breaking of internal waves in the troposphere and stratosphere.
While tritium remains in the troposphere, many reemissions are possible, but in this work only the first reemission after the release is considered.
Experience has shown that this method should be used with caution as it treats the troposphere in two smoothed layers, over its entire depth.
First, the eruption must be explosive enough to inject eruption products into the stratosphere, the par t of the atmosphere above the troposphere.
Higher levels of pollutants in the lower troposphere may stimulate seed germination when other external conditions are inappropriate for seedling growth.
