While individual TLE may cause a local variation in NOx, these do not appear to be significant on regional scales (or beyond). Transient luminous events (TLEs) occasionally observed above a strong thunderstorm system have been the subject of a great deal of research during recent years. Y. Comparing regional variations of NO2 with 2-3 order of magnitude variations in lightning activity, we show that there is no significant impact of red sprites, giant jets or blue jets upon NOx levels in the stratosphere and mesosphere (20-70 km), within the detection levels of the instrument. T., and Coauthors, 2010: Observations of prolific transient luminous event production above a mesoscale convective system in Argentina during the Sprite2006 Campaign in Brazil. In this study we make use of nighttime NO2 observations by the GOMOS instrument to test whether TLE are producing significant NOx enhancements in the middle atmosphere on a regional scale. Characteristics of Thunderstorms and Lightning Flashes Which Produce Mesospheric Transient Luminous Events NTRS Authors: Walter A. The preferred usage is transient luminous event (TLE), because the various types of electrical-discharge phenomena in the upper atmosphere lack several characteristics of the more familiar tropospheric lightning. Transient luminous events are optical phenomena that occur high up in the atmosphere and they are linked to electrical activity in underlying thunderstorms. Some have speculated that large ionisation increases from red sprites, one type of TLE, could result in enhancements of odd nitrogen. Sprites are brief optical emissions occurring above thunderstorms. Upper-atmospheric lightning is believed to be electrically induced forms of luminous plasma. For many years it has been suggested that transient luminous events (TLE) occurring over thunderstorms may produce significant modifications to neutral atmospheric chemistry.
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