Measurements of methane concentrations and isotopic ratios from the atmosphere via equipment aboard supply aircrafts operating between Christchurch, New Zealand and McMurdo Sound

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: Measurements of methane concentrations and isotopic ratios from the atmosphere via equipment aboard supply aircrafts operating between Christchurch, New Zealand and McMurdo Sound
Description:
Abstract:
The atmospheric trace gas, methane (CH4), affects the radiative heat balance of the earth. Measurements of the carbon and hydrogen isotopes in atmospheric methane are used to relate this climatically important greenhouse gas to its sources. An important part of this work is to determine the variation with height and latitude in the very clean air south of New Zealand to determine the transport of methane from the northern hemisphere. Large whole air samples (1000-1400 litres) were collected from a compressor system aboard the supply aircrafts operating between Christchurch and McMurdo (Hercules – C130, Starlifter – C141 and the Globemaster - C17). Samples were analysed for methane concentrations and the isotopic ratios of 14C and 13C. The use of different aircrafts offers the ability to measure the vertical distribution of methane and the isotopic ratios within the troposphere and stratosphere along a latitudinal transect.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: 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.M. Roberts, P.A. An air-driven pressure booster pump for aircraft-based air sampling. Journal of atmospheric and oceanic technology 11(6): 1664-1671, 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. 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.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19891101
Ending_Date: Unknown
Currentness_Reference:Unknown
Status:
Progress: In Work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 165.0
East_Bounding_Coordinate: 175.0
North_Bounding_Coordinate: -43.0
South_Bounding_Coordinate: -78.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AIR QUALITY
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > TRACE GASES/TRACE SPECIES
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > METHANE
Theme_Keyword: AIRCRAFT
Theme_Keyword: GAS CHROMATOGRAPHS
Theme_Keyword: GC-MS > GAS CHROMATOGRAPH/MASS SPECTROMETRY
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: OCEAN > SOUTHERN OCEAN
Place_Keyword: OCEAN > PACIFIC OCEAN > SOUTH PACIFIC OCEAN
Place_Keyword: CONTINENT > ANTARCTICA
Place_Keyword: GEOGRAPHIC REGION > POLAR
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GORDON BRAILSFORD
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: National Institute of Water and Atmospheric Research Ltd. (NIWA)
Address: PO BOX 14901
City: Wellington
Country: New Zealand
Contact_Voice_Telephone: +64 4 386 0300
Contact_Facsimile_Telephone: +64 3 386 0574
Contact_Electronic_Mail_Address: g.brailsford@niwa.co.nz
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
All of the data is held by NIWA Ltd., New Zealand. Please contact Dr Gordon Brailsford for more information.
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NZ/NZAI/ANZ > Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand
Contact_Person: SHULAMIT GORDON
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctica New Zealand
Address: Private Bag 4745
City: Christchurch
Country: New Zealand
Contact_Voice_Telephone: +64 3 358 0200
Contact_Facsimile_Telephone: +64 3 358 0211
Contact_Electronic_Mail_Address: s.gordon@antarcticanz.govt.nz
Resource_Description: K087_1989_2008_NZ_2
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Not Available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.antarcticanz.govt.nz/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.niwa.co.nz/our-science/atmosphere/barin...
Access_Instructions:
NIWA's atmospheric homepage with publications
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20090422
Metadata_Review_Date: 20090606
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: CEISHA POIROT
Contact_Person_Primary:
Contact_Person: SHULAMIT GORDON
Contact_Position: DIF AUTHOR
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctica New Zealand
Address: Private Bag 4745
City: Christchurch
Country: New Zealand
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctica New Zealand
Address: Private Bag 4745
City: Christchurch
Country: New Zealand
Contact_Voice_Telephone: +64 3 358 0200
Contact_Voice_Telephone: +64 3 358 0200
Contact_Facsimile_Telephone: +64 3 358 0211
Contact_Facsimile_Telephone: +64 3 358 0211
Contact_Electronic_Mail_Address: c.poirot@antarcticanz.govt.nz
Contact_Electronic_Mail_Address: s.gordon@antarcticanz.govt.nz
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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