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Allocation of Terrestrial Carbon Sources Using 14CO2: Methods, Measurement, and Modeling

Published online by Cambridge University Press:  09 February 2016

Scott J Lehman ,
John B Miller ,
Chad Wolak ,
John Southon ,
Pieter P Tans ,
Stephen A Montzka ,
Colm Sweeney ,
Arlyn Andrews ,
Brian LaFranchi  and
Thomas P Guilderson
...Show all authors
Scott J Lehman
Affiliation:
Institute of Arctic and Alpine Research, University of Colorado, Boulder, Colorado, USA
John B Miller
Affiliation:
NOAA Earth System Research Laboratory, Boulder, Colorado, USA Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado, USA
Chad Wolak
Affiliation:
Institute of Arctic and Alpine Research, University of Colorado, Boulder, Colorado, USA
John Southon
Affiliation:
Keck AMS Facility, University of California, Irvine, California, USA
Pieter P Tans
Affiliation:
NOAA Earth System Research Laboratory, Boulder, Colorado, USA
Stephen A Montzka
Affiliation:
NOAA Earth System Research Laboratory, Boulder, Colorado, USA
Colm Sweeney
Affiliation:
NOAA Earth System Research Laboratory, Boulder, Colorado, USA Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado, USA
Arlyn Andrews
Affiliation:
NOAA Earth System Research Laboratory, Boulder, Colorado, USA Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado, USA
Brian LaFranchi
Affiliation:
Lawrence Livermore National Lab, Livermore, California, USA
Thomas P Guilderson
Affiliation:
Lawrence Livermore National Lab, Livermore, California, USA
Jocelyn C Turnbull
Affiliation:
Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado, USA National Isotope Centre, GNS Science, Lower Hutt, New Zealand
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Abstract

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The radiocarbon content of whole air provides a theoretically ideal and now observationally proven tracer for recently added fossil-fuel-derived CO2 in the atmosphere (Cff ). Over large industrialized land areas, determination of Cff also constrains the change in CO2 due to uptake and release by the terrestrial biosphere. Here, we review the development of a Δ14CO2 measurement program and its implementation within the US portion of the NOAA Global Monitoring Division's air sampling network. The Δ14CO2 measurement repeatability is evaluated based on surveillance cylinders of whole air and equates to a Cff detection limit of <0.9 ppm from measurement uncertainties alone. We also attempt to quantify additional sources of uncertainty arising from non-fossil terms in the atmospheric 14CO2 budget and from uncertainties in the composition of “background” air against which Cff enhancements occur. As an example of how we apply the measurements, we present estimates of the boundary layer enhancements of Cff and Cbio using observations obtained from vertical airborne sampling profiles off of the northeastern US. We also present an updated time series of measurements from NOAA GMD's Niwot Ridge site at 3475 m asl in Colorado in order to characterize recent Δ14CO2 variability in the well-mixed free troposphere.

Information

Type
Atmospheric Carbon Cycle
Information
Radiocarbon , Volume 55 , Issue 3: Proceedings of the 21st International Radiocarbon Conference (Part 2 of 2) , 2013 , pp. 1484 - 1495
Copyright
Copyright © 2013 by the Arizona Board of Regents on behalf of the University of Arizona 

References

Baiter, M. 2012. Using radiocarbon to go beyond good faith in measuring CO2 emissions. Science 337(6093):400–1.Google Scholar
Biasing, TJ, Broniak, CT, Marland, G. 2005. The annual cycle of fossil-fuel carbon dioxide emissions in the United States. Tellus B 57(2):107–15.Google Scholar
Boden, TA, Marland, G, Andres, RJ. 2010. Global, Regional, and National Fossil-Fuel CO2 Emissions. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, US Department of Energy, Oak Ridge, Tennessee, USA.Google Scholar
Ciais, P, Friedlingstein, P, Schimel, DS, Tans, PP. 1999. A global calculation of the δ13C of soil respired carbon: implications for the biospheric uptake of anthropogenic CO2 . Global Biogeochemical Cycles 13(2):519–30.Google Scholar
Conway, TJ, Tans, PP, Waterman, LS, Thoning, KW, Kitzis, DR, Masarie, KA, Zhang, N. 1994. Evidence for inter-annual variability of the carbon cycle from the NOAA/CMDL global air sampling network. Journal of Geophysical Research 99(D11):22,831–55.CrossRefGoogle Scholar
Graven, HD, Gruber, N. 2011. Continental-scale enrichment of atmospheric 14CO2 from the nuclear power industry: potential impact on the estimation of fossil fuel-derived CO2 . Atmospheric Chemistry and Physics 11(5):14,583–605.Google Scholar
Graven, HD, Guilderson, TP, Keeling, RF. 2007. Methods for high-precision 14C AMS measurement of atmospheric CO2 at LLNL. Radiocarbon 49(2):349–56.Google Scholar
Graven, HD, Stephens, BB, Guilderson, TP, Campos, TL, Schimel, DS, Campbell, JE, Keeling, RF. 2009. Vertical profiles of biospheric and fossil fuel-derived CO2 and fossil fuel CO2: CO ratios from airborne measurements of Δ14C, CO2 and CO above Colorado, USA. Tellus B 61(3):536–46.Google Scholar
Graven, HD, Guilderson, TP, Keeling, RF. 2012. Observations of radiocarbon in CO2 at seven global sampling sites in the Scripps flask network: analysis of spatial gradients and seasonal cycles. Journal of Geophysical Research 117: D02303, doi:10.1029/2011JD016535.Google Scholar
Hsueh, D, Krakauer, NY, Randerson, JT, Xu, X, Trumbore, SE, Southon, JR. 2007. Regional patterns of radiocarbon and fossil-fuel derived CO2 in surface air across North America. Geophysical Research Letters 34: L02816, doi:10.1029/2006GL027032.CrossRefGoogle Scholar
International Atomic Energy Agency (IAEA). 2004. Management of Waste Containing Tritium and Carbon-14. Technical Report Series no. 421. Vienna: IAEA. 109 p.Google Scholar
Joint Committee for Guides in Metrology (JCGM). 2008. International Vocabulary of Metrology – Basic and General Concepts and Associated Terms. 3rd edition. Metrology, JCfGi, editor. Geneva: Bureau Internation des Poids et Mesures.Google Scholar
Krol, M, Houweling, S, Bregman, B, van den Broek, M, Segers, A, van Velthoven, P, Peters, W, Dentener, F, Bergamaschi, P. 2005. The two-way nested global chemistry-transport zoom model TM5: algorithm and applications. Atmospheric Chemistry and Physics 5:417–32.Google Scholar
Lehman, SJ, Miller, JB, Turnbull, JC, Southon, JR, Tans, PP, Sweeney, C. 2011. 14CO2 measurements in the NOAA/ESRL Global Co-operative Sampling Network: an update on measurements and data quality. In: Brand, WA, editor. 15th WMO/IAEA Meeting of Experts on Carbon Dioxide, Other Greenhouse Gases and Related Tracer Measurement Techniques (Jena, GDR 7–10 September 2009). World Meteorological Organization Global Atmosphere Watch Report No. 194. Geneva: WMO. p 315–8.Google Scholar
Levin, I, Kromer, B, Schmidt, M, Sartorius, H. 2003. A novel approach for independent budgeting of fossil fuel CO2 over Europe by 14CO2 observations. Geophysical Research Letters 30:2194, doi:10.1029/2003GL018477.Google Scholar
Levin, I, Kromer, B. 2004. The tropospheric 14CO2 level in mid-latitudes of the Northern Hemisphere (1959–2003). Radiocarbon 46(3):1261–72.CrossRefGoogle Scholar
Levin, I, Hammer, S, Kromer, B, Meinhardt, F. 2008. Radiocarbon observations in atmospheric CO2: determining fossil fuel CO2 over Europe using Jungfraujoch observations as background. Science of the Total Environment 391(2–3):211–26.CrossRefGoogle ScholarPubMed
Levin, I, Naegler, T, Kromer, B, Diehl, M, Francey, RJ, Gomez-Pelaez, AJ, Steele, LP, Wagenbach, D, Weller, R, Worthy, DE. 2010. Observations and modelling of the global distribution and long-term trend of atmospheric 14CO2 . Tellus B 62(1):26–46.Google Scholar
Miller, JB, Lehman, SJ, Montzka, SA, Sweeney, C, Miller, BR, Karion, A, Wolak, C, Dlugokencky, EJ, Southon, J, Turnbull, JC, Tans, PP. 2012. Linking emissions of fossil fuel CO2 and other anthropogenic trace gases using atmospheric 14CO2 . Journal of Geophysical Research 117:D08302, doi:10.1029/2011JD017048. CrossRefGoogle Scholar
Randerson, J, Enting, IG, Schuur, EAG, Caldeira, K, Fung, IY. 2002. Seasonal and latitudinal variability of troposphere Δ14CO2: post bomb contributions from fossil fuels, oceans, the stratosphere, and the terrestrial biosphere. Global Biogeochemical Cycles 16(4):1112, doi:10.1029/2002GB001876.CrossRefGoogle Scholar
Stohl, AC, Forster, A, Frank, A, Seibert, P, Wotawa, G. 2005. Technical note: the Lagrangian particle dispersion model FLEXPART version 6.2. Atmospheric Chemistry and Physics 5:2461–74.Google Scholar
Stuiver, M, Polach, HA. 1977. Discussion: reporting of 14C data. Radiocarbon 19(3):355–63.CrossRefGoogle Scholar
Thompson, MV, Randerson, JT. 1999. Impulse response functions of terrestrial carbon cycle models: method and application, Global Change Biology 5(4):371–94.Google Scholar
Thoning, KW, Tans, PP, Komhyr, WD. 1989. Atmospheric carbon dioxide at Mauna Loa Observatory 2. Analysis of the NOAA GMCC data, 1974–1985. Journal of Geophysical Research 94(D6):8549–65.Google Scholar
Turnbull, JC, Miller, JB, Lehman, SJ, Tans, PP, Sparks, RJ, Southon, J. 2006. Comparison of 14CO2, CO, and SF6 as tracers for recently added fossil fuel CO2 in the atmosphere and implications for biological CO2 exchange. Geophysical Research Letters 33: L01817, doi:10.1029/2005GL024213.CrossRefGoogle Scholar
Turnbull, JC, Lehman, SJ, Miller, JB, Sparks, RJ, Southon, JR, Tans, PP. 2007. A new high precision 14CO2 time series for North American continental air. Journal of Geophysical Research 112: D11310, doi:10.1029/2006JD008184.Google Scholar
Turnbull, J, Rayner, P, Miller, J, Naegler, T, Ciais, P, Cozic, A. 2009. On the use of 14CO2 as a tracer for fossil fuel CO2: quantifying uncertainties using an atmospheric transport model. Journal of Geophysical Research 114: D22302, doi:10.1029/2009JD012308.CrossRefGoogle Scholar
Turnbull, JC, Lehman, SJ, Morgan, S, Wolak, C. 2010. A new automated extraction system for 14C measurement in atmospheric CO2 . Radiocarbon 52(3):1261–9.Google Scholar
Turnbull, JC, Tans, PP, Lehman, SJ, Baker, D, Conway, TJ, Chung, YS, Gregg, J, Miller, JB, Southon, JR, Zhou, L-X. 2011. Atmospheric observations of carbon monoxide and fossil fuel CO2 emissions from East Asia. Journal of Geophysical Research 116: D24306, doi:10.1029/2011JD016691.Google Scholar
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