CO2 dilution in the lower atmosphere from temperature and wind speed profiles |
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| Authors: | Isidro A Pérez M Luisa Sánchez M ángeles García |
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| Institution: | 1. Department of Applied Physics, Faculty of Sciences, University of Valladolid, c/ Prado de la Magdalena s/n, 47071, Valladolid, Spain
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| Abstract: | Temperature and wind speed profiles obtained from 3?years of radio acoustic sounding system sodar measurements at a rural site in the northern Spanish plateau were fitted to polynomial functions. Depending on the extrema of these fits, several groups of profiles were considered. Daily evolution of temperature profiles corresponded to the lower boundary layer evolution. However, wind speed profiles revealed a frequent low-level jet during the whole day. CO2 surface concentrations were analysed, and surface CO2 dilution was also considered by selection of thin canopies with variable depth, resulting in dilution rates of 7 and 18?ppm when the layer increased 100?m for the 95th percentile and temperature and wind speed profiles, respectively. |
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