title: Spatial and temporal trends of ozone distribution in the Jizerské hory Mountains of the Czech Republic.
abstract: We present results of the 5-year monitoring of ambient O3 concentrations in a Central European medium altitude mountain forested area. O3 levels were measured at 11 sites between 714 and 1000 m a.s.l. in 2006-2010 vegetation seasons using Ogawa diffusive samplers. Our results reveal that O3 exposure in the Jizerské hory Mts. was relatively high and comparable with polluted sites in Southern Europe and in higher altitudes. O3 concentrations differed significantly between individual sites and in individual years. O3 concentrations showed clear dependence on altitude at sites with similar aspect. Its gradient for the entire 5-year period under review equaled 3.5 ppb/100 m of altitude, ranging between nearly 5 ppb/100 m of altitude in 2006 and nearly 3 ppb/100 m of altitude in 2010. O3 concentrations at the site with northern aspect were consistently significantly lower than at the site at similar altitude with southern aspect. O3 concentrations measured at the forest edge were consistently lower than those measured at the same site but at the forest clearing. It is evident that the macro-setting of the O3 monitoring site is crucial for obtaining reliable results with high representativeness for the area.
authors: Czech Hydrometeorological Institute, Prague, Czech Republic. hunova@chmi.cz.|Faculty of Science, Institute for Environmental Studies, Charles University in Prague, Prague, Czech Republic. hunova@chmi.cz.
authors: Iva
authors: I
authors: Hůnová
authors: Czech Hydrometeorological Institute, Prague, Czech Republic.|Faculty of Science, Institute for Environmental Studies, Charles University in Prague, Prague, Czech Republic.
authors: Petra
authors: P
authors: Stoklasová
authors: Czech Hydrometeorological Institute, Prague, Czech Republic.
authors: Jana
authors: J
authors: Schovánková
authors: T.G.Masaryk Water Research Institute, Prague, Czech Republic.
authors: Alena
authors: A
authors: Kulasová
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000531:Altitude; D018153:Czech Republic; D004784:Environmental Monitoring; D065928:Forests; D010126:Ozone / Q000032:analysis*; D012621:Seasons
chemical_list: D000393:Air Pollutants; D010126:Ozone
keywords: Ambient ozone; Diffusive samplers; Spatial and temporal variations