Abstract:
Comparisons of model forecasts (XTM CHIMERE and COSMO-RU7-ART) air pollution with data of measurements in Moscow in 2015 are presented. Both HTM use predictive fields of meteorological sizes according to model of the atmosphere of COSMO-RU7. It is established that models underestimate average daily concentration of PM10 and predict with an error on the average of 0,01–0,02 mg of m–3. Concentration of dioxide of XTM COSMO-RU7-ART nitrogen is counted with a margin error on the average by 0,01–0,02 mg of m3, CHIMERE – 0,02–0,03 mg of m–3 (summer of 0,05–0,08 mg of m–3), systematically overestimating NO2. Most often COSMO-RU7-ART underestimates concentration of carbon monoxide (by 0,1–0,2 mg of m–3, a daily maximum on 0,4–0,6 mg of m–3); CHIMERE, on the contrary, systematically overestimates WITH (on 0,2–0,35 mg of m–3, it is frequent on 0,4–0,5 mg of m–3 in the summer). Some results of experiments about influence of a way of definition of height of the planetary boundary layer (PBL) on model calculations of concentration of CO are discussed. PBL paid off: a) directly in XTM CHIMERE, b) in COSMO-RU7.
Keywords:
modeling of air pollution, chemistry-transport model CHIMERE, chemistry-transport model COSMO-RU7-ART, the height of the boundary layer
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