Surface ocean pCO2 seasonality and sea-air CO2 flux estimates for the North American east coast
Signorini, Sergio R.
Najjar, Raymond G.
Friedrichs, Marjorie A. M.
Salisbury, Joseph E.
Wang, Zhaohui Aleck
Shadwick, Elizabeth H.
MetadataShow full item record
Underway and in situ observations of surface ocean pCO2, combined with satellite data, were used to develop pCO2 regional algorithms to analyze the seasonal and interannual variability of surface ocean pCO2 and sea-air CO2 flux for five physically and biologically distinct regions of the eastern North American continental shelf: the South Atlantic Bight (SAB), the Mid-Atlantic Bight (MAB), the Gulf of Maine (GoM), Nantucket Shoals and Georges Bank (NS+GB), and the Scotian Shelf (SS). Temperature and dissolved inorganic carbon variability are the most influential factors driving the seasonality of pCO2. Estimates of the sea-air CO2 flux were derived from the available pCO2 data, as well as from the pCO2 reconstructed by the algorithm. Two different gas exchange parameterizations were used. The SS, GB+NS, MAB, and SAB regions are net sinks of atmospheric CO2 while the GoM is a weak source. The estimates vary depending on the use of surface ocean pCO2 from the data or algorithm, as well as with the use of the two different gas exchange parameterizations. Most of the regional estimates are in general agreement with previous studies when the range of uncertainty and interannual variability are taken into account. According to the algorithm, the average annual uptake of atmospheric CO2 by eastern North American continental shelf waters is found to be between −3.4 and −5.4 Tg C yr−1 (areal average of −0.7 to −1.0 mol CO2 m−2 yr−1) over the period 2003–2010.
© The Author(s), 2013. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Journal of Geophysical Research: Oceans 118 (2013): 5439–5460, doi:10.1002/jgrc.20369.
Suggested CitationArticle: Signorini, Sergio R., Mannino, Antonio, Najjar, Raymond G., Friedrichs, Marjorie A. M., Cai, Wei-Jun, Salisbury, Joseph E., Wang, Zhaohui Aleck, Thomas, Helmuth, Shadwick, Elizabeth H., "Surface ocean pCO2 seasonality and sea-air CO2 flux estimates for the North American east coast", Journal of Geophysical Research: Oceans 118 (2013): 5439–5460, DOI:10.1002/jgrc.20369, https://hdl.handle.net/1912/6393
The following license files are associated with this item:
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Unported
Showing items related by title, author, creator and subject.
An initial assessment of native and invasive tunicates in shellfish aquaculture of the North American east coast Carman, Mary R.; Morris, James A.; Karney, R. C.; Grunden, David W. (2009-11-23)The objective of the study was to assess the distribution of native and invasive tunicates in the fouling community of shellfish aquaculture gear along the U.S. east coast of the Atlantic. Since the 1980s, several species ...
Reproduction among protobranch bivalves of the family Nuculidae from sublittoral, bathyal, and abyssal depths off the New England coast of North America Scheltema, Rudolf S.; Williams, Isabelle P. (2009-02-04)Protobranch bivalve species of the family Nuculidae pass either through a planktonic lecithotrophic larval stage or a direct non-planktonic development. Oogenesis of the three sublittoral species examined is synchronous. ...
Meteorological influences on trace gas transport along the North Atlantic coast during ICARTT 2004 Davis, Shannon R.; Talbot, Robert; Mao, Huiting; Neuman, Jonathan A. (MDPI AG, 2014-12-04)An analysis of coastal meteorological mechanisms facilitating the transit pollution plumes emitted from sources in the Northeastern U.S. was based on observations from the International Consortium for Atmospheric Research ...