Low nocturnal atmospheric dispersion capacity of the Venezuelan savannah

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Abstract
Daily measurements of the variation of CH4 and O3 concentration in the Venezuelan savannah have been made over the course of a year. Additionally, temperature profiles with altitude were measured with a tethered balloon for 60 days. The temperature profiles show that during the night, the lower portion of the atmosphere becomes very stable. From the CH4 and O3 measurements, it is possible to conclude that a period of low dispersion capacity in the lower atmosphere occurs every day, and that no significant differences exist between the dry and wet seasons. The possible air quality implications are discussed. DOI: 10.1111/j.1600-0889.1987.tb00100.x

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