Measurements of atmospheric aerosols from air and snow samples and meteorological measurements taken from a remote site on the Ross Ice Shelf
Entry ID: K093_1989_1990_NZ_1

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Summary
Abstract: The chemistry of air and snow at a remote site on the Ross Ice Shelf was conducted to study atmospheric aerosol particulates which are of interest as they may be important regulators of climate and can indicate the relative strengths of natural and man-made sources of aerosol on a global scale. A range of air and snow samples were collected throughout the study period. Aerosol particulates were collected on membrane filters and analysed using atomic absorption spectrometry, ion chromatography and scanning electron microscopy to establish the bulk chemical composition (rock dust, sea salt, sulphate, nitrate, etc) of the aerosol and the physical characteristics of individual particles. The chemical composition was compared with that of fresh snow samples collected immediately after significant snowfalls to understand processes by which aerosol particulates are trapped at the snow surface. Two firn cores down to 4m depth were analysed for major chemical impurities to establish whether a seasonal cycle exists in the impurity content in the air. Ultratrace levels of mercury and toxic organic compounds (such as dioxins and pesticide residues) were investigated. Air filtered for the measurement of airbourne mercury concentrations and surface snow samples were processes to remove and trap mercury for analysis by photoacoustic mercury analysis. Large volumes of snow from a range of depths down to 1.33m was sampled to trap organic compounds of ployurethane foam filters and analysed by mass spectrometry. Meteorological observations (wind speed and direction, air temperature) were carried out at 3 hour intervals during waking hours (09:00 and 00:00) throughout the period of sampling.
Geographic Coverage
 N: -78.8167 S: -78.8167  E: 171.9667  W: 171.9667

Temporal Coverage
Start Date: 1989-12-09
Stop Date: 1990-01-17


Location Keywords
CONTINENT > ANTARCTICA
GEOGRAPHIC REGION > POLAR


Science Keywords
ATMOSPHERE >AEROSOLS >AEROSOL BACKSCATTER    [Definition]
ATMOSPHERE >AEROSOLS >PARTICULATE MATTER    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >TRACE ELEMENTS/TRACE METALS    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >TRACE GASES/TRACE SPECIES    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE


Platform
GROUND-BASED OBSERVATIONS    [Information]


Instrument
ION CHROMATOGRAPHS    [Information]
MASS SPECTROMETERS    [Information]
AA >Atomic Absorption Spectrometer    [Information]


Quality
All of the data is held by NIWA Ltd., New Zealand. Please contact Dr Gordon Brailsford for more information.


Keywords
GROUND-BASED MEASUREMENTS


Data Set Progress
COMPLETE


Data Center
Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand    [Information]
Data Center URL: http://www.antarcticanz.govt.nz/

Data Center Personnel
Name: SHULAMIT GORDON
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: s.gordon at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand


Personnel
GORDON BRAILSFORD
Role: TECHNICAL CONTACT
Phone: +64 4 386 0300
Fax: +64 3 386 0574
Email: g.brailsford at niwa.co.nz
Contact Address:
National Institute of Water and Atmospheric Research Ltd. (NIWA)
PO BOX 14901
City: Wellington
Country: New Zealand


CHAD DICK
Role: INVESTIGATOR
Contact Address:
Norwegian Polar Institute
CliC International Project Office
City: Tromsø
Country: Norway


CEISHA POIROT
Role: DIF AUTHOR
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: c.poirot at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand


SHULAMIT GORDON
Role: DIF AUTHOR
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: s.gordon at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand


Publications/References
Dick, A.L. Sheppard, D.S. Patterson, J.E. Mercury content of Antarctic surface snow: initial results. Atmospheric environment 24A(4): 973-978, 1990.

Harvey, M.J. Fisher, G.W. Lechner, I.S. Isaac, P. Flower, N.E. Dick, A.L. Summertime aerosol measurements in the Ross Sea region of Antarctica. Atmospheric environment 25A(3/4): 569-580, 1991.

Dick, A.L. 1990. A simple model for air/snow fractionation of aerosol components over the Antarctic Peninsula. Journal of Atmospheric Chemistry 11:179-196.

Creation and Review Dates
DIF Creation Date: 2009-04-22
Last DIF Revision Date: 2009-04-23

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