Measurements of NOx produced by rocket-triggered lightning
2007 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 34, no 3, L03816- p.Article in journal (Refereed) Published
We present the first direct measurements of NOx generated by specific lightning sources. In July 2005, three negative lightning flashes were triggered using the rocket-and-wire technique at the International Center for Lightning Research and Testing (ICLRT) at Camp Blanding, Florida. The NOx produced by these three rocket-triggered flashes was measured. The NOx production per unit charge was between 2 and 3 · 1020 molecules per meter per coulomb. The data show that the NOx production is primarily from long-duration, steady currents, as opposed to microsecondscale impulsive return stroke currents. This observation implies that cloud discharges, which transfer, via a steady current of the order of 100 A, larger charges than ground discharges, but do not contain return strokes, are as efficient as (or more efficient than) cloud-to-ground discharges in producing NOx.
Place, publisher, year, edition, pages
2007. Vol. 34, no 3, L03816- p.
Meteorology and Atmospheric Sciences Engineering and Technology
Research subject Engineering Science with specialization in Atmospheric Discharges; Electricity, Esp The Study Of Transients and Discharges
IdentifiersURN: urn:nbn:se:uu:diva-93605DOI: 10.1029/2006GL027956ISI: 000244360200001OAI: oai:DiVA.org:uu-93605DiVA: diva2:167133