No indian summer

Temperatures in Earth's lower stratosphere (from 14 to 22 km in altitude) were lower in September 1996 than at any other time since such temperatures were first systematically measured in 1979. Using microwave sensors aboard the TIROS-N series of polar-orbiting weather satellites, researchers from the Global Hydrology and Climate Center (GHCC) in Huntsville, Alabama, found that air in the stratosphere was 0.7°C cooler than the baseline temperature of the past 17 years. The cool month fits into what the researchers see as a 15-year cooling trend and is thought to be consistent with the depletion of ozone in the lower stratosphere.