Identifying anthropogenic sources of nitrogen oxide emissions from calculations of Lagrangian trajectories and the observational data from a tall tower in Siberia during the spring-summer period of 2007

Assessment of the regional atmospheric impact of wildfire emissions based on CO observations at the ZOTTO tall tower station in central Siberia

“…During winter, the observed surface mixing ratios in SWS exceed those in both the European part of Russia and southern east Siberia (SER and SES at Figure 1) by approximately 10–20 ppb. Our previous study based on observations of surface nitrogen oxides at ZOTTO [ Vivchar et al , 2009] have also showed the appreciable impact of industrial SWS emissions on surface air composition at regional scales during all the seasons, with the strongest impact during the cold season. Thus the observed seasonal maximum and minimum CO mixing ratios at ZOTTO agree well (at least qualitatively, taking into consideration possible differences among the data sets due to different measurement techniques) with those derived from TROICA measurements, manifesting nonlocal influence of climatically important anthropogenic sources in southern Siberia.…”

“…The background character and the geographical location of the station are appropriate conditions for studying atmospheric transport and coincident chemical transformation of polluted air at a wide range of spatial and temporal scales, particularly for assessing the potential influence of emissions from various natural and anthropogenic sources on surface air composition over the large territory of Siberia. The air transport climatology and the spatial distribution of anthropogenic sources contributing to high pollutant concentrations at ZOTTO observed episodically at synoptic time scales have been examined previously by Vivchar et al [2009] with 1 year of surface NO x data. Other measurements at ZOTTO include ozone, carbon monoxide, aerosol scattering and absorption coefficients, as well as aerosol size distributions.…”

Continuous low-maintenance CO<sub>2</sub>/CH<sub>4</sub>/H<sub>2</sub>O measurements at the Zotino Tall Tower Observatory (ZOTTO) in Central Siberia

“…To further reduce effects from the pressure regulators, polychlorotrifluoroethylene (PCTFE) is preferentially used as sealant to reduce gas permeation (Sturm et al, 2004). Our own laboratory experiments confirm the advantages of a PCTFE-equipped pressure regulator to suppress CO 2 corruption in the withdrawn air after storage (Winderlich, 2007). Additionally, the stability of the CO 2 concentration in tanks was observed to be better when they are stored in horizontal position (Keeling et al, 2007).…”

“…The construction of a new 304 m tall tower finished in September 2006. Aerosol and carbon monoxide measurements are done on 301 m and 52 m tower heights (Heintzenberg et al, 2008;Mayer et al, 2009); ozone and NOx are analyzed from 30 m level (Vivchar et al, 2009). Until June 2007, a complex gas measurement system for CO 2 , O 2 , CH 4 , CO, and N 2 O based on gas chromatography, paramagnetic sensors, and near-infrared spectroscopy was operated providing trace gas information for five tower levels (Kozlova et al, 2009).…”

Pan-Eurasian Experiment (PEEX): towards a holistic understanding of the feedbacks and interactions in the land–atmosphere–ocean–society continuum in the northern Eurasian region

“…Arctic tropospheric ozone is significantly influenced by long-range import of ozone and precursors from midlatitude sources as well as by boreal wildfires Wespes et al, 2012;Paris et al, 2010b;Vivchar et al, 2009). The role of biomass burning emissions in the ozone budget in high latitudes remains controversial.…”