Research output: Contribution to journal › Article › peer-review
Long-term measurements (2010-2014) of carbonaceous aerosol and carbon monoxide at the Zotino Tall Tower Observatory (ZOTTO) in central Siberia. / Mikhailov, Eugene F.; Mironova, Svetlana; Mironov, Gregory; Vlasenko, Sergey; Panov, Alexey; Chi, Xuguang; Walter, David; Carbone, Samara; Artaxo, Paulo; Heimann, Martin; Lavric, Jost; Poeschl, Ulrich; Andreae, Meinrat O.
In: Atmospheric Chemistry and Physics, Vol. 17, No. 23, 04.12.2017, p. 14365-14392.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Long-term measurements (2010-2014) of carbonaceous aerosol and carbon monoxide at the Zotino Tall Tower Observatory (ZOTTO) in central Siberia
AU - Mikhailov, Eugene F.
AU - Mironova, Svetlana
AU - Mironov, Gregory
AU - Vlasenko, Sergey
AU - Panov, Alexey
AU - Chi, Xuguang
AU - Walter, David
AU - Carbone, Samara
AU - Artaxo, Paulo
AU - Heimann, Martin
AU - Lavric, Jost
AU - Poeschl, Ulrich
AU - Andreae, Meinrat O.
PY - 2017/12/4
Y1 - 2017/12/4
N2 - We present long-term (5-year) measurements of particulate matter with an upper diameter limit of similar to 10 mu m (PM10), elemental carbon (EC), organic carbon (OC), and water-soluble organic carbon (WSOC) in aerosol filter samples collected at the Zotino Tall Tower Observatory in the middle-taiga subzone (Siberia). The data are complemented with carbon monoxide (CO) measurements. Air mass back trajectory analysis and satellite image analysis were used to characterise potential source regions and the transport pathway of haze plumes. Polluted and background periods were selected using a non-parametric statistical approach and analysed separately. In addition, near-pristine air masses were selected based on their EC concentrations being below the detection limit of our thermal-optical instrument. Over the entire sampling campaign, 75 and 48% of air masses in winter and in summer, respectively, and 42% in spring and fall are classified as polluted. The observed background concentrations of CO and EC showed a sine-like behaviour with a period of 365 +/- 4 days, mostly due to different degrees of dilution and the removal of polluted air masses arriving at the Zotino Tall Tower Observatory (ZOTTO) from remote sources. Our analysis of the near-pristine conditions shows that the longest periods with clean air masses were observed in summer, with a frequency of 17%, while in wintertime only 1% can be classified as a clean. Against a background of low concentrations of CO, EC, and OC in the near-pristine summertime, it was possible to identify pollution plumes that most likely came from crude-oil production sites located in the oil-rich regions of Western Siberia. Overall, our analysis indicates that most of the time the Siberian region is impacted by atmospheric pollution arising from biomass burning and anthropogenic emissions. A relatively clean atmosphere can be observed mainly in summer, when polluted species are removed by precipitation and the aerosol burden returns to near-pristine conditions.
AB - We present long-term (5-year) measurements of particulate matter with an upper diameter limit of similar to 10 mu m (PM10), elemental carbon (EC), organic carbon (OC), and water-soluble organic carbon (WSOC) in aerosol filter samples collected at the Zotino Tall Tower Observatory in the middle-taiga subzone (Siberia). The data are complemented with carbon monoxide (CO) measurements. Air mass back trajectory analysis and satellite image analysis were used to characterise potential source regions and the transport pathway of haze plumes. Polluted and background periods were selected using a non-parametric statistical approach and analysed separately. In addition, near-pristine air masses were selected based on their EC concentrations being below the detection limit of our thermal-optical instrument. Over the entire sampling campaign, 75 and 48% of air masses in winter and in summer, respectively, and 42% in spring and fall are classified as polluted. The observed background concentrations of CO and EC showed a sine-like behaviour with a period of 365 +/- 4 days, mostly due to different degrees of dilution and the removal of polluted air masses arriving at the Zotino Tall Tower Observatory (ZOTTO) from remote sources. Our analysis of the near-pristine conditions shows that the longest periods with clean air masses were observed in summer, with a frequency of 17%, while in wintertime only 1% can be classified as a clean. Against a background of low concentrations of CO, EC, and OC in the near-pristine summertime, it was possible to identify pollution plumes that most likely came from crude-oil production sites located in the oil-rich regions of Western Siberia. Overall, our analysis indicates that most of the time the Siberian region is impacted by atmospheric pollution arising from biomass burning and anthropogenic emissions. A relatively clean atmosphere can be observed mainly in summer, when polluted species are removed by precipitation and the aerosol burden returns to near-pristine conditions.
KW - CLOUD CONDENSATION NUCLEI
KW - SECONDARY ORGANIC AEROSOL
KW - BIOMASS-BURNING AEROSOL
KW - AMAZON RAIN-FOREST
KW - BLACK CARBON
KW - CHEMICAL-COMPOSITION
KW - BOREAL FOREST
KW - SIZE DISTRIBUTIONS
KW - ELEMENTAL CARBON
KW - ATMOSPHERIC AEROSOLS
U2 - 10.5194/acp-17-14365-2017
DO - 10.5194/acp-17-14365-2017
M3 - статья
VL - 17
SP - 14365
EP - 14392
JO - Atmospheric Chemistry and Physics
JF - Atmospheric Chemistry and Physics
SN - 1680-7316
IS - 23
ER -
ID: 11011158