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Measurements of tropospheric aerosols and meteorological data in remote marine region in Antarctica to compare with New Zealand measurements to help understand the sulphur cycles influence on global climate
Entry ID: K176_1991_1992_NZ_1


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Summary
Abstract: Dimethylsulphide (DMS) and sub-micron atmospheric particles are key components in the atmospheric sulphur cycle. DMS produced by biota in the oceans is thought to be the main source of atmospheric sulphur in the atmosphere over the southwest Pacific. Once in the atmosphere, DMS is oxidised, resulting in the formation of aerosol containing non-sea-salt sulphate and methanesulphonic acid. An understanding of this gas to particle conversion process is important as the particles produced act as cloud condensation nuclei (CCN) and it through CCN that the sulphur cycle has the potential to affect climate on a global scale via a cloud albedo feedback mechanism. We need to know the amounts of aerosol that are produced under various atmospheric conditions. This project proposed to measure the major atmospheric sulphur compounds found in the gas and aerosol phase in order to improve the understanding of the atmospheric sulphur cycle in a clean marine atmosphere. The concentration and properties of these components, along with meteorological information, were measured at the water's edge of McDonald Beach on the northwest coast of Ross Island for a period of eighteen days. This work was in conjunction with work carried out in New Zealand and by using these results; we are able to make direct comparisons of behaviour of the sulphur cycle in these two very different environments to gain an understanding of how climate itself affects the cycle. Meteorological data includes wind speed, temperature, relative humidity and solar radiation. Reduced sulphur gases in both air and water was analysed by gas chromatography. Sea water samples over a shallow depth profile and samples from melt pools were analysed for dissolved gas levels. Airborne concentration of aerosols was examined by ion chromatography and CCN concentrations were recorded every three seconds.

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Description: Related metadata datasets


Geographic Coverage
 N: -77.25 S: -77.25  E: 166.35  W: 166.35

Temporal Coverage
Start Date: 1992-01-02
Stop Date: 1992-01-24


Location Keywords
CONTINENT > ANTARCTICA
CONTINENT > ANTARCTICA > ROSS ISLAND
CONTINENT > ANTARCTICA > MCDONALDS BEACH
GEOGRAPHIC REGION > POLAR


Science Keywords
ATMOSPHERE >AEROSOLS >CLOUD CONDENSATION NUCLEI    [Definition]
ATMOSPHERE >AEROSOLS >SULFATE PARTICLES    [Definition]
ATMOSPHERE >ATMOSPHERIC TEMPERATURE >AIR TEMPERATURE    [Definition]
ATMOSPHERE >ATMOSPHERIC WATER VAPOR >HUMIDITY    [Definition]
ATMOSPHERE >ATMOSPHERIC WINDS >VERTICAL WIND MOTION    [Definition]
ATMOSPHERE >ATMOSPHERIC RADIATION >SOLAR RADIATION    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >SULFUR COMPOUNDS    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE


Platform
FIELD SURVEYS    [Information]
GROUND STATIONS    [Information]
FIELD INVESTIGATION    [Information]


Instrument
AWS >Automated Weather System    [Information]
PMS >Particle Measuring System
GAS CHROMATOGRAPHS    [Information]


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
MICHAEL HARVEY
Role: INVESTIGATOR
Phone: +64 4 386 0308
Fax: +64 4 386 2153
Email: m.harvey at niwa.co.nz
Contact Address:
NIWA
Private Bag 14901
City: Wellington
Postal Code: 6021
Country: New Zealand


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
Wylie, D.J. 1993. Atmospheric chemistry of biogenic sulfur in the Southern Hemisphere. PhD thesis, University of Auckland, New Zealand.

Wylie, D.J. Harvey, M.J. de Mora, S.J. Boyd, I.S. Liley, J.B. 1993 Dimethylsulfide and aerosol measurements at Ross Island, Antarctica. Dimethylsulfide: oceans, atmosphere and climate: proceedings of the international symposium held in Belgirate, Italy, 13-15 October 1992. Restelli, G., Angeletti, G. (eds), Dordrecht, The Netherlands Kluwer Academic Publishers 792324900

Harvey, M.J. And Wiley, D.J. 1991. Particles and sulphur in the Pacific atmosphere. In: South Pacific Environments: Interactions with weather and climate. Ed J.E. Hay. University of Auckland Environmental Science Occasional Publication No. 6.

Creation and Review Dates
DIF Creation Date: 2009-05-21
Last DIF Revision Date: 2009-06-06


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