The dye-3 gas and aerosol sampling program (dgasp) - an overview. Jaffrezo, J., L. & Davidson, C., I. Atmos Environ Pt A-Gen Top, 27:2703-2707, 1993. abstract bibtex DGASP was designed as an international effort to study
the processes influencing chemical species that eventually reach
the deep ice in the south of Greenland. These processes include
long-range atmospheric transport, wet and dry deposition to the
snow surface, and changes during aging of the snow. The program
took place during August 1988-July 1989. Experimental work included
sampling of aerosols and gases, collection of fresh and older
surface snow, and sampling of snowpits. The various samples were
analysed for chemical species that are tracers of specific source
categories. Results of the program show that the southern Greenland
Ice Sheet experiences very different airborne concentration
patterns than sea-level arctic sites. Concentrations of SO42-,
trace metals, and other species are episodic and peak in April,
unlike the consistently high concentrations during January-April
seen at lower elevations. Source regions influencing Dye 3 are
variable, and include North America, western Europe, and the Arctic
Basin. The last region is particularly important, as it may contain
relatively high concentrations of chemical constituents from
eastern Europe and western Asia that eventually reach Dye 3. The
seasonal variations in airborne concentrations are generally also
reflected in fresh snow. Similarly, these patterns are seen in
snowpits, although some modifications to the glacial record are
apparent. Other information on the extent of riming, aerosol/gas
partitioning, and aerosol size distributions demonstrate the
complexity of air-snow transfer processes, and illustrate the need
for further research.
C1 CARNEGIE MELLON UNIV,DEPT CIVIL ENGN,PITTSBURGH,PA 15213.
CARNEGIE MELLON UNIV,DEPT ENGN & PUBL POLICY,PITTSBURGH,PA 15213.
@article{
title = {The dye-3 gas and aerosol sampling program (dgasp) - an overview},
type = {article},
year = {1993},
pages = {2703-2707},
volume = {27},
id = {c600bd0d-8d59-3a33-bca6-5f3e118f0cde},
created = {2014-10-08T16:28:18.000Z},
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profile_id = {363623ef-1990-38f1-b354-f5cdaa6548b2},
group_id = {02267cec-5558-3876-9cfc-78d056bad5b9},
last_modified = {2017-03-14T17:32:24.802Z},
read = {false},
starred = {false},
authored = {false},
confirmed = {true},
hidden = {false},
citation_key = {Jaffrezo:AEPAGT:1993a},
source_type = {article},
private_publication = {false},
abstract = {DGASP was designed as an international effort to study
the processes influencing chemical species that eventually reach
the deep ice in the south of Greenland. These processes include
long-range atmospheric transport, wet and dry deposition to the
snow surface, and changes during aging of the snow. The program
took place during August 1988-July 1989. Experimental work included
sampling of aerosols and gases, collection of fresh and older
surface snow, and sampling of snowpits. The various samples were
analysed for chemical species that are tracers of specific source
categories. Results of the program show that the southern Greenland
Ice Sheet experiences very different airborne concentration
patterns than sea-level arctic sites. Concentrations of SO42-,
trace metals, and other species are episodic and peak in April,
unlike the consistently high concentrations during January-April
seen at lower elevations. Source regions influencing Dye 3 are
variable, and include North America, western Europe, and the Arctic
Basin. The last region is particularly important, as it may contain
relatively high concentrations of chemical constituents from
eastern Europe and western Asia that eventually reach Dye 3. The
seasonal variations in airborne concentrations are generally also
reflected in fresh snow. Similarly, these patterns are seen in
snowpits, although some modifications to the glacial record are
apparent. Other information on the extent of riming, aerosol/gas
partitioning, and aerosol size distributions demonstrate the
complexity of air-snow transfer processes, and illustrate the need
for further research.
C1 CARNEGIE MELLON UNIV,DEPT CIVIL ENGN,PITTSBURGH,PA 15213.
CARNEGIE MELLON UNIV,DEPT ENGN & PUBL POLICY,PITTSBURGH,PA 15213.},
bibtype = {article},
author = {Jaffrezo, J L and Davidson, C I},
journal = {Atmos Environ Pt A-Gen Top}
}
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These processes include\nlong-range atmospheric transport, wet and dry deposition to the\nsnow surface, and changes during aging of the snow. The program\ntook place during August 1988-July 1989. Experimental work included\nsampling of aerosols and gases, collection of fresh and older\nsurface snow, and sampling of snowpits. The various samples were\nanalysed for chemical species that are tracers of specific source\ncategories. Results of the program show that the southern Greenland\nIce Sheet experiences very different airborne concentration\npatterns than sea-level arctic sites. Concentrations of SO42-,\ntrace metals, and other species are episodic and peak in April,\nunlike the consistently high concentrations during January-April\nseen at lower elevations. Source regions influencing Dye 3 are\nvariable, and include North America, western Europe, and the Arctic\nBasin. The last region is particularly important, as it may contain\nrelatively high concentrations of chemical constituents from\neastern Europe and western Asia that eventually reach Dye 3. The\nseasonal variations in airborne concentrations are generally also\nreflected in fresh snow. Similarly, these patterns are seen in\nsnowpits, although some modifications to the glacial record are\napparent. Other information on the extent of riming, aerosol/gas\npartitioning, and aerosol size distributions demonstrate the\ncomplexity of air-snow transfer processes, and illustrate the need\nfor further research.\nC1 CARNEGIE MELLON UNIV,DEPT CIVIL ENGN,PITTSBURGH,PA 15213.\nCARNEGIE MELLON UNIV,DEPT ENGN & PUBL POLICY,PITTSBURGH,PA 15213.","bibtype":"article","author":"Jaffrezo, J L and Davidson, C I","journal":"Atmos Environ Pt A-Gen Top","bibtex":"@article{\n title = {The dye-3 gas and aerosol sampling program (dgasp) - an overview},\n type = {article},\n year = {1993},\n pages = {2703-2707},\n volume = {27},\n id = {c600bd0d-8d59-3a33-bca6-5f3e118f0cde},\n created = {2014-10-08T16:28:18.000Z},\n file_attached = {false},\n profile_id = {363623ef-1990-38f1-b354-f5cdaa6548b2},\n group_id = {02267cec-5558-3876-9cfc-78d056bad5b9},\n last_modified = {2017-03-14T17:32:24.802Z},\n read = {false},\n starred = {false},\n authored = {false},\n confirmed = {true},\n hidden = {false},\n citation_key = {Jaffrezo:AEPAGT:1993a},\n source_type = {article},\n private_publication = {false},\n abstract = {DGASP was designed as an international effort to study\nthe processes influencing chemical species that eventually reach\nthe deep ice in the south of Greenland. These processes include\nlong-range atmospheric transport, wet and dry deposition to the\nsnow surface, and changes during aging of the snow. The program\ntook place during August 1988-July 1989. Experimental work included\nsampling of aerosols and gases, collection of fresh and older\nsurface snow, and sampling of snowpits. The various samples were\nanalysed for chemical species that are tracers of specific source\ncategories. Results of the program show that the southern Greenland\nIce Sheet experiences very different airborne concentration\npatterns than sea-level arctic sites. Concentrations of SO42-,\ntrace metals, and other species are episodic and peak in April,\nunlike the consistently high concentrations during January-April\nseen at lower elevations. Source regions influencing Dye 3 are\nvariable, and include North America, western Europe, and the Arctic\nBasin. 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