CaltechAUTHORS
  A Caltech Library Service

Regional patterns of radiocarbon and fossil fuel-derived CO_2 in surface air across North America

Hsueh, Diana Y. and Krakauer, Nir Y. and Randerson, James T. and Xu, Xiaomei and Trumbore, Susan E. and Southon, John R. (2007) Regional patterns of radiocarbon and fossil fuel-derived CO_2 in surface air across North America. Geophysical Research Letters, 34 (2). Art. No. L02816. ISSN 0094-8276. http://resolver.caltech.edu/CaltechAUTHORS:20181128-113350185

[img] PDF - Published Version
See Usage Policy.

210Kb
[img] Plain Text (readme.txt) - Supplemental Material
See Usage Policy.

3332b
[img] Plain Text (Table S1. Radiocarbon samples and locations) - Supplemental Material
See Usage Policy.

8Kb
[img] PDF (Table S1. Radiocarbon samples and locations) - Supplemental Material
See Usage Policy.

140Kb
[img] Plain Text (Text S1. Methods and results) - Supplemental Material
See Usage Policy.

3988b
[img] Plain Text (Tab‐delimited Table 1) - Supplemental Material
See Usage Policy.

1378b

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20181128-113350185

Abstract

Radiocarbon levels in annual plants provide a means to map out regional and continental‐scale fossil fuel plumes in surface air. We collected corn (Zea mays) across North America during the summer of 2004. Plants from mountain regions of western North America showed the smallest influence of fossil fuel‐derived CO_2 with a mean Δ^(14)C of 66.3‰ ±1.7‰. Plants from eastern North America and from the Ohio‐Maryland region showed a larger fossil fuel influence with a mean Δ^(14)C of 58.8‰ ± 3.9‰ and 55.2‰ ± 2.3‰, respectively, corresponding to 2.7 ppm ± 1.5 ppm and 4.3 ppm ± 1.0 ppm of added fossil fuel CO_2 relative to the mountain west. A model–data comparison suggests that surveys of annual plant Δ^(14)C can provide a useful test of atmospheric mixing in transport models that are used to estimate the spatial distribution of carbon sources and sinks.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1029/2006gl027032DOIArticle
ORCID:
AuthorORCID
Randerson, James T.0000-0001-6559-7387
Alternate Title:Regional patterns of radiocarbon and fossil fuel-derived CO2 in surface air across North America
Additional Information:© 2007 by the American Geophysical Union. Received 31 May 2006; revised 26 November 2006; accepted 11 December 2006; published 23 January 2007. We gratefully acknowledge support from NSF EAR‐0402062 and NASA NNG05GD126. We thank the following people for collecting samples: J. E. Anderson, D. Baldocchi, J. C. Beckwith, T. Berggren, J. Chanton, and M. Coakely, G. J. Collatz, M. Conte, P. S. Curtis, K. Dutta, J. Ehleringer, J. Fessenden, L. Flanagan, N. Goulden, J. Harden, S. Hobbie, A. Hoffman, D. Hollinger, R. A. Houghton, J. Hughes Martiny, P. Kasibhatla, J. Y. King, C. T. Lai, D. LeBauer, H. Liu, D. H. Loyd Jr., Y. Luo, L. Masiello, J. E. Munger, J. W. Munger, D. Nowinski, J. Okeefe, T. Perez, A. Rocha, D. R. Sandquist, T. Schimelfenig, T. Schuur, C. Scott, C. Still, A. Trumbore, S. B. Verma, C. Vogel, G. Welp, and L. Ziolkowski. We thank G. dos Santos for advice on laboratory analysis, A. V. Rocha for assistance with fieldwork, S. M. Cheong for assistance with figure design, and J. Miller and S. Lehman for sharing CO_2 and Δ^(14)C data from Niwot Ridge.
Funders:
Funding AgencyGrant Number
NSFEAR‐0402062
NASANNG05GD126
Subject Keywords:bomb radiocarbon; global carbon cycle; atmospheric trace gas inversions
Record Number:CaltechAUTHORS:20181128-113350185
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20181128-113350185
Official Citation:Hsueh, D. Y., N. Y. Krakauer, J. T. Randerson, X. Xu, S. E. Trumbore, and J. R. Southon (2007), Regional patterns of radiocarbon and fossil fuel‐derived CO2 in surface air across North America, Geophys. Res. Lett., 34, L02816, doi: 10.1029/2006GL027032.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91292
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:28 Nov 2018 23:08
Last Modified:28 Nov 2018 23:08

Repository Staff Only: item control page