Climate models show an increasing warming trend with altitude, but balloon data shows a slight cooling with altitude in the tropics. (friendsofscience.org)
According to co-author John Christi from the University of Alabama, satellite data «and independent balloon data agree that the atmospheric warming trends do not exceed those of the surface,» while greenhouse models «demand that atmospheric trend values be two to three times greater.» (dotearth.blogs.nytimes.com)