Document of bibliographic reference 404551

BibliographicReference record

Type

Bibliographic resource

Type of document

Book chapters

BibLvlCode

AMS

Title

Global ocean carbon cycle

Abstract

The oceans play a major role in the global carbon cycle by taking up a substantial fraction of the excess carbon dioxide that humans release into the atmosphere. As a consequence of humankind’s collective carbon dioxide (CO₂) release into the atmosphere, referred to as anthropogenic CO₂ (C_ant) emissions, the atmospheric CO₂ concentration has risen from pre-industrial levels of about 278 ppm (parts per million) to 419.3±0.1 ppm in 2023 (see section 2g1 for details). Marine C_ant is the major cause of anthropogenic ocean acidification. Over the last decade the global ocean has continued to take up C_ant and therefore is a major mediator of global climate change. Of the 10.9±0.8 Pg C yr⁻¹ C_ant released during the period 2013−22, 2.8±0.4 Pg C yr⁻¹ (26%) accumulated in the ocean, 3.3±0.8 Pg C yr⁻¹ (28%) accumulated on land, and 5.2±0.02 Pg C yr⁻¹ (46%) remained in the atmosphere, with an imbalance of −0.4 Pg C yr⁻¹ (−3%; see Table 7 in Friedlingstein et al. 2023). This decadal C_ant uptake estimate is a consensus view from a combination of measured ocean decadal CO₂ inventory changes, global ocean biogeochemical models, and global air–sea CO₂ flux estimates based on surface ocean fugacity of CO₂ (fCO_2w)1 measurements.

Bibliographic citation

Wanninkhof, R.; Trinanes, J.A.; Landschützer, P.; Jersild, A.; Feely, R.A.; Carter, B.R. (2024). Global ocean carbon cycle, in: Blunden, J. et al. State of the Climate in 2023. Bulletin of the American Meteorological Society, 105(8): pp. S198-S213

Topic

Marine

Is peer reviewed

true

Access rights

open access

Is accessible for free

true