RT info:eu-repo/semantics/article
T1 Analysis of ozone concentrations between 2002–2020 in urban air in northern Spain
A1 García Pérez, María Ángeles
A1 Villanueva Gómez, Javier
A1 Pardo Gómez, Nuria
A1 Pérez Bartolomé, Isidro Alberto
A1 Sánchez Gómez, María Luisa
K1 Ozono
K1 Calentamiento global
K1 Climate change
K1 Aire - Contaminación - España
K1 Aire - Análisis
K1 2502 Climatología
K1 2509.02 Contaminación Atmosférica
AB This paper analyses surface ozone measurements at five stations in an urban area (Valladolid) in the upper Spanish plateau over the period 2002–2020. Temporal evolutions, the relationship between ozone and other pollutants such as nitrogen oxides, and the assessment of the ozone concentration trend during the study period were analysed. Daily evolution of ozone at all the stations showed mean maximum concentrations in the afternoon, 15:00 GMT, with values ranging between 73.8 and 80.9 µg m−3, evidencing the influence of photochemical processes favoured by solar radiation in ozone formation. The lowest levels were recorded at night and in the early morning, 7:00 GMT, and were between 23.4 and 32.3 µg m−3, related with the reduction by NO reactions and deposition processes. A broad spring–summer peak between May and July was seen, with the highest values in the latter, with a mean value of up to 73.8 µg m−3. The variation in the monthly mean ozone concentrations of the different percentiles was analysed using a harmonic model. The empirical equation described the experimental values satisfactorily, with a confidence level of 95% and coefficients of determination above 80%, confirming the major decreasing trend in the ozone peak values over the study period.
PB MDPI
SN 2073-4433
YR 2021
FD 2021
LK https://uvadoc.uva.es/handle/10324/59086
UL https://uvadoc.uva.es/handle/10324/59086
LA eng
NO Atmosphere, 2021, Vol. 12, Nº. 11, 1495
NO Producción Científica
DS UVaDOC
RD 06-ago-2024