Seasonal Trends and Chemical Composition of Snow at Terra Nova Bay (ANTARCTICA)

Abstract Snow samples from two snow-pits, located at different altitudes and distances from the sea, were analyzed to establish the H2O2, NO3 −, Cl−, SO4 2-, nss SO4 2- and MSA concentrations. The mean annual accumulation rates were calculated from the layer dating based on the H2O2 depth profile. The seasonal trends of the examined components' time series are discussed. The results obtained for the two stations are compared and found to be coherent. MSA appears to be the most promising seasonal tracer for the Terra Nova Bay region which is characterized by a strong marine contribution.

[1]  M. Legrand,et al.  Ice-core record of oceanic emissions of dimethylsulphide during the last climate cycle , 1991, Nature.

[2]  R. Larsen,et al.  Impact of oceanic sources of biogenic sulphur on sulphate aerosol concentrations at Mawson, Antarctica , 1991, Nature.

[3]  R. W. Gillett,et al.  Coherence between seasonal cycles of dimethyl sulphide, methanesulphonate and sulphate in marine air , 1991, Nature.

[4]  Y. Cohen,et al.  Atmospheric hydrogen peroxide: Does it share a role with ozone in degrading air quality , 1990 .

[5]  P. Mayewski,et al.  Recent increase in nitrate concentration of Antarctic snow , 1990, Nature.

[6]  A. Watson,et al.  Methanesulphonic acid, dimethyl sulphoxide and dimethyl sulphone in aerosols , 1990 .

[7]  Glenn E. Shaw,et al.  Antarctic aerosols: a review , 1988 .

[8]  K. Heumann,et al.  Determination of nitrate at the ng/g level in Antarctic snow samples with ion chromatography and isotope dilution mass spectrometry , 1988 .

[9]  A. Neftel,et al.  Seasonal Variations in Hydrogen Peroxide in Polar Ice Cores , 1988, Annals of Glaciology.

[10]  K. Heumann,et al.  Nitrate trace determinations in snow and firn core samples of ice shelves at the weddell sea, Antarctica , 1988 .

[11]  M. Legrand,et al.  Ion-chromatographic measurements of ammonium, fluoride, acetate, formate and methanesulphonate ions at very low levels in antarctic ice , 1987 .

[12]  M. Legrand,et al.  Measurements of methanesulphonic acid in Antarctic ice , 1987, Nature.

[13]  P. Mayewski,et al.  Seasonal and spatial trends in south Greenland snow chemistry , 1987 .

[14]  A. Lazrus,et al.  Derivatization technique for the determination of peroxides in precipitation , 1986 .

[15]  R. Delmas.  Antarctic Precipitation Chemistry , 1986 .

[16]  W. Jaeschke.  Chemistry of Multiphase Atmospheric Systems , 1986 .

[17]  H. Oeschger,et al.  Sulphate and nitrate concentrations in snow from South Greenland 1895–1978 , 1985, Nature.

[18]  S. Jacobs.  Oceanology of the Antarctic continental shelf , 1985 .

[19]  M. Legrand,et al.  Spatial and Temporal Variations of Snow Chemistry in Terre Adélie (East Antarctica) , 1985, Annals of Glaciology.

[20]  A. Neftel,et al.  Measurements of hydrogen peroxide in polar ice samples , 1984, Nature.

[21]  M. Legrand,et al.  The ionic balance of Antarctic snow: A 10-year detailed record , 1984 .

[22]  F. Pinglot,et al.  SOME METEOROLOGICAL APPLICATIONS OF RADIOACTIVE FALLOUT MEASUREMENTS IN , 1983 .

[23]  R. Delmas,et al.  Snow chemistry on James Ross Island (Antarctic Peninsula) , 1982 .

[24]  R. Delmas.  Antarctic sulphate budget , 1982, Nature.

[25]  M. Herron.  Impurity sources Of F−, Cl−, NO3 − and SO4 2− in Greenland and Antarctic precipitation , 1982 .

[26]  W. Jaeschke,et al.  Chemistry of the Unpolluted and Polluted Troposphere , 1982 .

[27]  J. W. Drummond,et al.  The Tropospheric Cycle of NOX , 1982 .

[28]  E. Wada,et al.  15N abundance in Antarctica: origin of soil nitrogen and ecological implications , 1981 .