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Evolution of natural and anthropogenic fluxes of atmospheric CO{sub 2} from 1957 to 2003

Abstract

An analysis is carried out of the longest available records of atmospheric CO{sub 2} and its 13C/12C ratio from the Scripps Institution of Oceanography network of fixed stations, augmented by data in the 1950s and 1960s from ships and ice floes. Using regression analysis, we separate the interhemispheric gradients of CO{sub 2} and 13C/12C into: (1) a stationary (possibly natural) component that is constant with time, and (2) a time-evolving component that increases in proportion to fossil fuel emissions. Inverse calculations using an atmospheric transport model are used to interpret the components of the gradients in terms of land and ocean sinks. The stationary gradients in CO{sub 2} and 13C/12C are both satisfactorily explained by ocean processes, including an ocean carbon loop that transports 0.5 PgC /yr southwards in the ocean balanced by an atmospheric return flow. A stationary northern land sink appears to be ruled out unless its effect on the gradient has been offset by a strong rectifier effect, which seems doubtful. A growing northern land sink is not ruled out, but has an uncertain magnitude (0.3-1.7 PgC /yr centred on year 2003) dependent on the rate at which CO{sub 2} from fossil fuel burning is dispersed vertically  More>>
Publication Date:
Jul 01, 2010
Product Type:
Journal Article
Resource Relation:
Journal Name: Tellus, Series B: Chemical and Physical Meteorology; Journal Volume: 62B; Other Information: 56 refs., 13 figs., 5 tabs. Pre-print on-line article; 10.1111/J.1600-0889.2010.00507.X
Subject:
54 ENVIRONMENTAL SCIENCES; CARBON CYCLE; ANNUAL VARIATIONS; CARBON DIOXIDE; EARTH ATMOSPHERE; EMISSION; FOSSIL FUELS; CARBON 14; CARBON 13; TIME-SERIES ANALYSIS
OSTI ID:
1004339
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0280-6509; TRN: SE1108029
Availability:
Available from DOI: http://dx.doi.org/10.1111/j.1600-0889.2010.00507.x
Submitting Site:
SWDN
Size:
page(s) 1-22
Announcement Date:
Feb 07, 2011

Citation Formats

Keeling, Charles D, Piper, Stephen C, Whorf, Timothy P, and Keeling, Ralph F. (Scripps Institution of Oceanography, La Jolla, CA (United States)), e-mail: scpiper@ucsd.edu. Evolution of natural and anthropogenic fluxes of atmospheric CO{sub 2} from 1957 to 2003. Sweden: N. p., 2010. Web. doi:10.1111/J.1600-0889.2010.00507.X.
Keeling, Charles D, Piper, Stephen C, Whorf, Timothy P, & Keeling, Ralph F. (Scripps Institution of Oceanography, La Jolla, CA (United States)), e-mail: scpiper@ucsd.edu. Evolution of natural and anthropogenic fluxes of atmospheric CO{sub 2} from 1957 to 2003. Sweden. doi:10.1111/J.1600-0889.2010.00507.X.
Keeling, Charles D, Piper, Stephen C, Whorf, Timothy P, and Keeling, Ralph F. (Scripps Institution of Oceanography, La Jolla, CA (United States)), e-mail: scpiper@ucsd.edu. 2010. "Evolution of natural and anthropogenic fluxes of atmospheric CO{sub 2} from 1957 to 2003." Sweden. doi:10.1111/J.1600-0889.2010.00507.X. https://www.osti.gov/servlets/purl/10.1111/J.1600-0889.2010.00507.X.
@misc{etde_1004339,
title = {Evolution of natural and anthropogenic fluxes of atmospheric CO{sub 2} from 1957 to 2003}
author = {Keeling, Charles D, Piper, Stephen C, Whorf, Timothy P, and Keeling, Ralph F. (Scripps Institution of Oceanography, La Jolla, CA (United States)), e-mail: scpiper@ucsd.edu}
abstractNote = {An analysis is carried out of the longest available records of atmospheric CO{sub 2} and its 13C/12C ratio from the Scripps Institution of Oceanography network of fixed stations, augmented by data in the 1950s and 1960s from ships and ice floes. Using regression analysis, we separate the interhemispheric gradients of CO{sub 2} and 13C/12C into: (1) a stationary (possibly natural) component that is constant with time, and (2) a time-evolving component that increases in proportion to fossil fuel emissions. Inverse calculations using an atmospheric transport model are used to interpret the components of the gradients in terms of land and ocean sinks. The stationary gradients in CO{sub 2} and 13C/12C are both satisfactorily explained by ocean processes, including an ocean carbon loop that transports 0.5 PgC /yr southwards in the ocean balanced by an atmospheric return flow. A stationary northern land sink appears to be ruled out unless its effect on the gradient has been offset by a strong rectifier effect, which seems doubtful. A growing northern land sink is not ruled out, but has an uncertain magnitude (0.3-1.7 PgC /yr centred on year 2003) dependent on the rate at which CO{sub 2} from fossil fuel burning is dispersed vertically and between hemispheres}
doi = {10.1111/J.1600-0889.2010.00507.X}
journal = {Tellus, Series B: Chemical and Physical Meteorology}
volume = {62B}
place = {Sweden}
year = {2010}
month = {Jul}
}