Status: this preprint has been withdrawn by the authors.
Concurrent measurements of atmospheric O2 and CO2 amount fractions have been used for decades now to estimate ï¬uxes of carbon to and from the oceans and the land biosphere. The equations used in these estimates explicitly include fossil fuel combustion but largely ignore ï¬uxes of O2 associated with the reï¬ning of metals and other industrially important elements. Here, we quantify the O2 ï¬uxes associated with the processing of iron, aluminum and copper. We also consider the potential impact of sulfur. We ï¬nd that inclusion of the ï¬uxes due to metals leads to an increased estimate of ocean carbon uptake in the years 2000–2010 of Pg a-1 with a corresponding decrease in estimated land uptake. A rough estimate of sulfur chemistry during fossil fuel combustion also increases ocean uptake but by a much smaller amount. These corrections are small compared to existing estimates of the ï¬uxes and their uncertainties ((2.27 ± 0.60) and (1.05 ± 0.84) Pg a-1 for ocean and land respectively (Keeling and Manning, 2014)) but should be employed in future analyses.
This preprint has been withdrawn.
Received: 10 Nov 2022 – Discussion started: 08 Mar 2023
Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Mark O. Battle, Raine Raynor, Stephen Kesler, and Ralph Keeling Viewed Total article views: 1,167(including HTML, PDF, and XML)
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