About Léon Teisserenc de Bort
Léon Philippe Teisserenc de Bort was a French meteorologist and a pioneer in the field of aerology. Together with Richard Assmann (1845-1918), he is credited as co-discoverer of the stratosphere, as both men announced their discovery during the same time period in 1902. Teisserenc de Bort pioneered the use of unmanned instrumented balloons and was the first to identify the region in the atmosphere around 8-17 kilometers of height where the lapse rate reaches zero, known today as the tropopause. In other words, he discovered an indication of a temperature inversion or at least of a zero lapse rate above this altitude. This naming convention has since been maintained, with (higher-altitude) layers that were subsequently discovered being given names of this sort. He was elected a fellow of the Royal Meteorological Society in 1903, honorary member in 1909, and was awarded the Symons Gold Medal of the Society in 1908.
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