Friday, December 19, 2014

Global Warming:Degrees of Thermal Insulation

I save good money by applying the use of thermal insulation in my home. The walls and attic are the obvious places insulated. But the windows are also provided with thermal insulation. Argon, a greenhouse gas, fills the dead air space between the double panes. It slows down the transfer of heat, hence, thermal insulation.

In the atmosphere, the 'solar' shortwave radiation that warms the Earth's surface becomes 'thermal' long wave radiation that tries to escape to space. However, increased levels of greenhouse gases increase the degree of thermal insulation of the atmosphere. At historically natural levels, greenhouse gases are a good thing. But at increasingly unnatural levels, they become problematic.