Quote:
Originally Posted by Fortunate
3. While the troposphere (lower atmosphere) is heating, the stratosphere (upper atmosphere) is cooling. If solar changes provided the dominant forcing, we would expect the straosphere to heat as well.
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I think this an overstatement. The changes in stratospheric temperatures are seasonal and vary in the lower stratosphere vs. the upper. Depending on time of year, northern vs southern hemisphere, and altitude within the stratosphere, there may be heating or cooling at a given time period. The Joule heating model I referenced above shows how solar wind variation matches this observed trend.