Annual measurements of atmospheric methane concentrations and isotopic ratios from Arrival Heights, Ross Island since November 1989
Entry ID:
K087_1989_2008_NZ_1
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Summary
Abstract:
The atmospheric trace gas, methane (CH4), affects the radiative heat balance of the earth. The sources of atmospheric methane are not well understood. Large air samples (1000-1400 litres) of methane are collected from a compressor system at Arrival Heights annually (since 1989) and samples are analysed for methane concentrations, the isotopic ratios of 14C/ 13C and 13C/12C and the characteristics and fluxes of sources and sinks are assessed. Sample collection is aimed at the clean sector of the sky from the West through North to East, throughout the year. Measurements of methane carbon isotopes and its concentration in the atmosphere in Antarctica will help to determine the geographic variation, transport and the type and distribution of the sources of methane from the northern hemisphere.
Related URL
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Description:
The data is publically available at the Global Atmospheric Watch, World Data Centre for Greenhouse Gases (WDCGG)
Description:
NIWA's atmospheric homepage with links to ftp sites with data
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Geographic Coverage
(Click for Interactive Map)
Spatial coordinates
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N: -77.82
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S: -77.82
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E: 166.65
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W: 166.65
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Min Altitude:
0
Max Altitude:
200
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Quality
All of the data is held by NIWA Ltd., New Zealand and is available via the ftp site listed on this page. The data is also available via the Global Atmospheric Watch, World Data Centre for Greenhouse Gases (WDCGG). Please contact Dr Gordon Brailsford for more information.
Data Set Progress
IN WORK
Personnel
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
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
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
Lowe, D.C., Brenninkmeijer, C.A.M., Manning, M.R., Typer, S.C., Dlugokencky, E. and Steele, P. 1989. Carbon Isotopic composition of Atmospheric Methane. Transaction American Geophysical Union 70(43): 1017. Lowe, D.C. Manning, M.R. Brenninkmeijer, C.A.M. Lassey, K.R. Carbon isotopic composition of atmospheric methane. in: Proceedings of the 12th International Clean Air Conference, ... Auckland, March 25-30, 1990.Gibson P. (ed) Auckland: Clean Air Society of Australia and New Zealand. 1990. pp.125-132 ISBN 0473008718
Lowe, D.C. Brenninkmeijer, C.A.M. Brailsford, G.W. Lassey, K.R. Gomez, A.J. Nisbet, E.G. Concentration and 13C records of atmospheric methane in New Zealand and Antarctica: evidence for changes in methane sources. Journal of geophysical research 99(D8): 16,913-16,925, 1994.
Brenninkmeijer, C.A. Lowe, D.C. Manning, M.R. Sparks, R.J. van Velthoven, P.F. The 13C, 14C and 18O isotopic composition of CO, CH4 and CO2 in the higher southern latitudes lower stratosphere. Journal of geophysical research 100(D12): 26,163-26,172, 1995.
Lassey, K.R. Lowe, D. Brailsford, G.W. Gomez, A.J. Brenninkmeijer, C.A.M. Manning, M.R. Nisbet, E.G. Atmospheric methane in the Southern Hemisphere: the recent decline in source strengths inferred from concentration and isotope data. in: Local climate change science, policy and mitigation strategies; proceedings of Air & Waste Management Association International Speciality Conference, April 1994, Phoenix, AZ.Mathai C.V. Stensland G. (eds) Phoenix: Air and Waste Management Association. 1994. pp.233-248
Brailsford, G.W., Lowe, D.C., Roberts, P.A., Bromley, A.M., Moss, R.C. and Ussler, W. 1995. Interannual variability of 13C in Atmospheric Methane in the Antarctic. EOS, Transactions American Geophysical Union (Abstracts Fall 1995 meeting paper A31D-11) 76(46): 100.
Manning, M.R. Pearman, G.I. Etheridge, D.M. Fraser, P.J. Lowe, D.C. Steele, L.P. Changing composition of the atmosphere. in: Greenhouse: coping with climate change.Bouma W.J. Pearman G.I. Manning M.R. (eds) Collingwood: CSIRO Australia. 1996. pp.3-26 ISBN 0643056882
Lowe, D.C. Manning, M.R. Brailsford, G.W. Bromley, A.M. 1991-1992 atmospheric methane anomaly: Southern Hemisphere 13C decrease and growth rate fluctuations. Geophysical research letters 24(8): 857-860, 1997.
Mak, J.E., Manning, M.R. and Lowe, D.C. 2000. Aircraft observations of δ13C of atmospheric methane over the Pacific in August 1991 and 1993: Evidence of an enrichment in 13CH4 in the Southern Hemisphere. Journal of Geophysical Research 105: 1329.
Lowe, D.C., Allan, W., Manning, M.R., Bromley, T., Brailsford, G., Ferretti, D., Gomes, A., Knobben, R., Martin, R., Mei,Z., Moss, R., Koshy, K. and Maata, M. 1999. Shipboard determinations of the distributions of 13C in atmospheric methane in the Pacific. Journal of Geophysical Research 104: 26, 125-126, 135.
Allan, W. Lowe, D.C. Gomez, A.J. Struthers, H. Brailsford, G.W. Interannual variation of 13C in tropospheric methane: implications for possible atomic chlorine sink in the marine boundary layer. Journal of geophysical research 110: D11306, 2005.
Brailsford, G.W. Interannual variability of 13C in atmospheric methane in the Antarctic. Eos 76(46): 100, 1995.
Creation and Review Dates
DIF Creation Date:
2009-04-22
Last DIF Revision Date:
2009-06-06
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