TY - JOUR
T1 - Air-to-snow mineral transfer - crustal elements in aerosols, fresh snow and snowpits on the Greenland ice sheet
AU - Colin, J. L.
AU - Lim, B.
AU - Herms, E.
AU - Genet, F.
AU - Drab, E.
AU - Jaffrezo, J. L.
AU - Davidson, C. I.
N1 - Funding Information:
Acknowledgements--We would like to thank all the people involved in DGASP at Dye 3 for field assistance in aerosol and snow sampling on the field. We thank P. Agogue and G. Malingre for technical assistance. This work was supported by the French Ministry of the Environment, the European Communities (TAGGSI EV5V-0412) and the U.S. National Science Foundation,
PY - 1997/10
Y1 - 1997/10
N2 - Air-to-snow mineral transfer of crustal species on the Greenland Ice Sheet was studied at Dye 3 during a full annual cycle (August 1988-August 1989) and at Summit during a summer campaign (May 1991-September 1991). At Dye 3, continuously sampled aerosols (54 filters) show a clear seasonal cycle of insoluble mineral elements (Al, Fe, Ca) with strong concentration peaks in April. The simultaneous collection of fresh snows (32 precipitation events) reveals the same seasonal picture. Furthermore, a comparison of metal concentrations in both aerosol and snow indicates that the transfer of crustal elements (Fe or Al) from air to snow seems to occur without fractionation. This one year seasonal cycle is recovered in snowpits excavated at Dye 3 (1 yr) and at Summit (3 yr) exhibiting no major post-depositional changes of crustal elements in aging snow. This suggests that the insoluble fraction of crustal elements, such as Fe or Al, in Arctic snows accurately reflects the seasonal atmospheric signal of mineral aerosols.
AB - Air-to-snow mineral transfer of crustal species on the Greenland Ice Sheet was studied at Dye 3 during a full annual cycle (August 1988-August 1989) and at Summit during a summer campaign (May 1991-September 1991). At Dye 3, continuously sampled aerosols (54 filters) show a clear seasonal cycle of insoluble mineral elements (Al, Fe, Ca) with strong concentration peaks in April. The simultaneous collection of fresh snows (32 precipitation events) reveals the same seasonal picture. Furthermore, a comparison of metal concentrations in both aerosol and snow indicates that the transfer of crustal elements (Fe or Al) from air to snow seems to occur without fractionation. This one year seasonal cycle is recovered in snowpits excavated at Dye 3 (1 yr) and at Summit (3 yr) exhibiting no major post-depositional changes of crustal elements in aging snow. This suggests that the insoluble fraction of crustal elements, such as Fe or Al, in Arctic snows accurately reflects the seasonal atmospheric signal of mineral aerosols.
KW - Greenland
KW - Insoluble fraction of Arctic snow
KW - Mineral arctic aerosol
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U2 - 10.1016/S1352-2310(97)00122-2
DO - 10.1016/S1352-2310(97)00122-2
M3 - Article
AN - SCOPUS:0031260070
SN - 1352-2310
VL - 31
SP - 3395
EP - 3406
JO - Atmospheric Environment
JF - Atmospheric Environment
IS - 20
ER -