Record Search Query:[Location: Location_Category='OCEAN', Location_Type='SOUTHERN OCEAN']
Measurements of carbon monoxide concentrations and isotopic ratios from the atmosphere via equipment aboard supply aircrafts operating between Christchurch, New Zealand and McMurdo Sound
Abstract:
Carbon monoxide (CO) is a trace gas in the atmosphere. The use of the radioactive isotope 14C in carbon monoxide is useful for determining the oxidative capacity via oxidation by hydroxyl (OH). Large whole air samples (1000-1400 litres) were collected from compressor system aboard the supply aircrafts operating between Christchurch and McMurdo (Hercules – C130, Starlifter – C141 and the ... Globemaster - C17). Samples were analysed for CO concentrations and the isotopic content of 14C. CO is extracted as CO2 by selective combustion techniques and the 13C/12C and 18O/16O isotopic ratios are determined. The use of different aircrafts offers the ability to measure the vertical distribution of carbon monoxide and the isotopic ratios within the troposphere and stratosphere along a latitudinal transect. Because of the low concentrations of CO in the Southern hemisphere very large samples were collected for 14CO measurements.
Brenninkmeijer, C.A.M. Measurement of the abundance of CO-14 in the atmosphere and the C-13/C-12 and O-18/O-16 ratio of atmospheric CO with applications in New Zealand and Antarctica. Journal of geophysical research 98(D6): 10,595-10,614, 1993.
Brenninkmeijer, C.A.M. Interhemispheric asymmetry in OH abundance inferred from measurements of atmospheric C-140. Nature 356(6364): 50-52, ... 1992.
Mak, J.E. Brenninkmeijer, C.A.M. Manning, M.R. Evidence for a missing carbon monoxide sink based on tropospheric measurements of CO-14. Geophysical research letters 19(14): 1467-1470, 1992.
Brenninkmeijer, C.A.M. Mak, J.E. Direct detection of the atmospheric production rate of 14C. Eos 75(44): 147, 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.
Mak, J.E. Brenninkmeijer, C.A.M. Tamaresis, J. Atmospheric 14CO observations and their use for estimating carbon monoxide removal rates. Journal of geophysical research 99: 22,915-22,922, 1994.
Mak, J.E. and Brenninkmeijer, C.A.M. 1994. Compressed air sample technology for Isotopic analysis of atmospheric carbon monoxide. Journal of Atmospheric Oceanic Technology 11: 425-431.
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.
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
Brenninkmeijer, C.A.M. Müller, R. Crutzen, P.J. Lowe, D.C. Manning, M.R. Sparks, R.J. van Velthoven, P.F.J. A large 13CO deficit in the lower Antarctic stratosphere due to “ozone hole” chemistry: Part I, observations. Geophysical research letters 23(16): 2125-2128, 1996.
Müller, R. Brenninkmeijer, C.A.M. Crutzen, P.J. A large 13CO deficit in the lower Antarctic stratosphere due to “ozone hole” chemistry: Part II, modelling. Geophysical research letters 23(16): 2129-2132, 1996.
Manning, M.R., Brenninkmeijer, C.A.M. and Allen, W. 1997. Atmospheric carbon monoxide budget of the southern hemisphere: Implications of 13C/12C measurements. Journal of Geophysical Research 102: 10673-10682.
Brenninkmeijer, C.A.M Rõckmann, T. Principal factors determining the 18O/16O ratio of atmospheric CO as derived from observations in the southern hemispheric troposphere and lowermost stratosphere. Journal of geophysical research 102(D21): 25,477-25,485, 1997.
Manning, M.R. Lowe, D.C. Moss, R.C. Bodeker, G.E. Allan, W. Short-term variations in the oxidizing power of the atmosphere. Nature 436: 1001-1004, 2005.
