Five-year analysis of background carbon dioxide and ozone variations during summer seasons at the Mario Zucchelli station (Antarctica)

Article English OPEN
Cristofanelli, P. ; Calzolari, F. ; Bonafè, U. ; Lanconelli, C. ; Lupi, A. ; Busetto, M. ; Vitale, V. ; Colombo, T. ; Bonasoni, P. (2011)

The work focuses on the analysis of CO2 and O3 surface variations observed during five summer experimental campaigns carried out at the ‘Icaro Camp’ clean air facility (74.7°S, 164.1°E, 41 m a.s.l.) of the ‘Mario Zucchelli’ Italian coastal research station. This experimental activity allowed the definition of summer average background O3 values that ranged from 18.3 ± 4.7 ppbv (summer 2005–2006) to 21.3 ± 4.0 ppbv (summer 2003–2004). Background CO2 concentrations showed an average growth rate of 2.10 ppmv yr-1, with the highest CO2 increase between the summer campaigns 2002–2003 and 2001–2002 (+2.85 ppmv yr-1), probably reflecting the influence of the 2002/2003 ENSO event. A comparison with other Antarctic coastal sites suggested that the summer background CO2 and O3 at MZS-IC are well representative of the average conditions of the Ross Sea coastal regions. As shown by the analysis of local wind direction and by 3-D back-trajectory calculations, the highest CO2 and O3 values were recorded in correspondence to air masses flowing from the interior of the Antarctic continent. These results suggest that air mass transport from the interior of the continent exerts an important influence on air mass composition in Antarctic coastal areas.DOI: 10.1111/j.1600-0889.2011.00576.x
  • References (42)
    42 references, page 1 of 5

    Aoki, S. and Nakazawa, T. 1997. Continuous measurement of atmospheric CO2 concentration at Syowa station (in Japanese). Antarct. Rec. 41, 161-176.

    Argentini, S., Del Buono, P., Della Vedova, A. M. and Mastrantonio, G. 1995. A statistical analysis of wind in Terra Nova Bay, Antarctica, for the austral summers 1988 and 1999. Atmos. Res. 39, 145-256.

    Bromwich, D. H. 1989. An extraordinary katabatic wind regime at Terra Nova Bay, Antarctica. Mon. Wea. Rev. 117, 688-695.

    Bromwich, H. D., Monaghan, A. J., Powers, J. G., Cassano, J. J., He-Lin, W. and co-authors. 2003. Antarctic mesoscale prediction system (AMPS): a case study from the 2000-01 field season. Mon. Wea. Rev. 131, 412-434.

    Calzolari, F., Evangelisti, F., Bonafe`, U., Colombo, T., Vitale, V. and coauthors. 2002. CO2 and O3 concentration measurements at Terra Nova Bay. In: Italian Research on Antarctic Atmosphere (ed M. Colacino). SIF, Bologna, 209-225.

    Cava, D., Schipa, S., Tagliazucca, M. and Giostra, U. 2004. Some characteristics of atmospheric boundary layer in an Antarctic coastal region. In: Italian Research on Antarctic Atmosphere and SCAR Workshop on Oceanography (ed. Colacino, M.). SIF, Bologna, 185-198.

    Conway, T. J., Lang, P. M. and Masarie, K. A. 2010. Atmospheric Carbon Dioxide Dry Air Mole Fractions from the NOAA ESRL Carbon Cycle Cooperative Global Air Sampling Network, 1968-2009, Version: 2010-09-08. Available at: ftp://ftp.cmdl.noaa. gov/ccg/co2/flask/month/. Accessed 12 Oct 2010.

    Crawford, J. H., Davis, D. D., Chen, G., Buhr, M., Oltmans, S. and co-authors. 2001. Evidence for photochemical production of ozone at the South Pole surface. Geophys. Res. Lett. 28, 3641-3644.

    Cristofanelli, P., Bonasoni, P., Calzolari, F., Bonafe`, U., Lanconelli, C. and co-authors. 2008. Analysis of near-surface ozone variations in Terra Nova Bay, Antarctica. Antarct. Sci. 20, 415-421.

    Cundari, V., Colombo, T. and Ciattaglia, L. 1995. Thirteen years of atmospheric carbon dioxide measurements at Mt. Cimone station, Italy. Il Nuovo Cimento Series C 18, 33-47.

  • Metrics
    No metrics available
Share - Bookmark