The sums required to correct the lower-troposphere temperatures are so byzantine that more holes may yet be found.

ECONOMIST: A heated controversy | The

Ozone in the lower atmosphere (troposphere) is regarded as a serious pollutant that can cause respiratory problems, and even damage masonry and agricultural crops.

BBC: London's clue to stubborn ozone levels

Through some as yet unexplained physical process, the surface and the rest of the troposphere may be less closely coupled than scientists now assume.

ECONOMIST: A heated controversy

This alters the calculation needed to derive the lower-troposphere temperature.

ECONOMIST: A heated controversy | The

KITEnergy takes advantage of the high altitude wind way up in the troposphere and converts it into electricity through tethered airfoils, these actually look like kites you would use in windsurfing.

FORBES: Italy's KITEnergy Converts High Altitude Winds to Electricity

For instance, clouds rising in the troposphere, the lower level of the atmosphere where air mixes freely, will bump up against the boundary of the much more stable stratosphere, forming ripples in the process.

MSN: Blame gravity waves for turbulence - Technology & science - Science - LiveScience | NBC News

While the aircraft has flown before, this was the first flight for it after being loaded up with eleven different scientific instruments, which will be used to examine trace gases, aerosols, and dynamics of the upper troposphere and lower stratosphere.

ENGADGET: NASA's unmanned Global Hawk completes key test flight

The UN models agree with established science that if human greenhouse gas emissions were causing global warming, there should be a hot spot of higher temperatures in the troposphere above the tropics, where collected concentrations would have the greatest effect, and the warming would show up first.

FORBES: Fakegate: The Obnoxious Fabrication of Global Warming