On the Southern Ocean CO2 uptake and the role of the biological carbon pump in the 21st century, links to supplementary material ...

• Main Authors: Hauck, Judith, Völker, Christoph, Wolf-Gladrow, Dieter A, Laufkötter, Charlotte, Vogt, Meike, Aumont, Olivier, Bopp, Laurent, Buitenhuis, Erik Theodoor, Doney, Scott C, Dunne, John, Gruber, Nicolas, Hashioka, Taketo, John, Jasmin, Le Quéré, Corinne, Lima, Ivan D, Nakano, Hideyuki, Séférian, Roland, Totterdell, Ian J
• Format: Dataset
• Language: English
• Published: PANGAEA 2015
• Subjects: File content; Uniform resource locator/link to image; Uniform resource locator/link to file; Southern Ocean
• Online Access: https://dx.doi.org/10.1594/pangaea.849079; https://doi.pangaea.de/10.1594/PANGAEA.849079

We use a suite of eight ocean biogeochemical/ecological general circulation models from the MAREMIP and CMIP5 archives to explore the relative roles of changes in winds (positive trend of Southern Annular Mode, SAM) and in warming- and freshening-driven trends of upper ocean stratification in altering export production and CO2 uptake in the Southern Ocean at the end of the 21st century. The investigated models simulate a broad range of responses to climate change, with no agreement ona dominance of either the SAM or the warming signal south of 44° S. In the southernmost zone, i.e., south of 58° S, they concur on an increase of biological export production, while between 44 and 58° S the models lack consensus on the sign of change in export. Yet, in both regions, the models show an enhanced CO2 uptake during spring and summer. This is due to a larger CO 2 (aq) drawdown by the same amount of summer export production at a higher Revelle factor at the end of the 21st century. This strongly increases the ... : Supplement to: Hauck, Judith; Völker, Christoph; Wolf-Gladrow, Dieter A; Laufkötter, Charlotte; Vogt, Meike; Aumont, Olivier; Bopp, Laurent; Buitenhuis, Erik Theodoor; Doney, Scott C; Dunne, John; Gruber, Nicolas; Hashioka, Taketo; John, Jasmin; Le Quéré, Corinne; Lima, Ivan D; Nakano, Hideyuki; Séférian, Roland; Totterdell, Ian J (2015): On the Southern Ocean CO2 uptake and the role of the biological carbon pump in the 21st century. Global Biogeochemical Cycles, 29(9), 1451-1470 ...