2024-03-29T00:40:23Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1817762022-03-11T10:56:13Zcom_10261_123com_10261_8col_10261_376
Paleoproductivity in the SW Pacific Ocean During the Early Holocene Climatic Optimum
Bostock, H.
Prebble, J.G.
Cortese, Giuseppe
Hayward, B.W.
Calvo, Eva María
Quirós-Collazos, Lucía
Kienast, Markus
Kim, K.
National Institution for Water and Atmospheric (New Zealand)
New Zealand Antarctic Research Institute
20 pages, 6 figures, 1 table, supporting information https://doi.org/10.1029/2019PA003574.-- The data from this paper will be available at the Pangaea.de database
The oceans are warming, but it is unclear how marine productivity will be affected under future climate change. In this study we examined a wide range of paleoproductivity proxies along a latitudinal transect (36–58°S) in the SW Pacific during the early Holocene climatic optimum, to explore regional patterns of productivity in a slightly warmer‐than‐present world. During the early Holocene there is a small increase in productivity in the subtropical waters, no change at the subtropical frontal zone, and conflicting evidence in records immediately south of the subtropical front, where an increase is inferred from one core site, but not at the other. Evidence for an increase in productivity in Antarctic Surface Waters, south of the polar front, is also equivocal. We infer a small increase in productivity in subtropical waters, and the ocean just south of the subtropical front was associated with changes in the ocean circulation of the SW Pacific, driven by changes in the Southern Hemisphere Westerly Winds split‐jet structure in this region. The relatively modest warming during the early Holocene climatic optimum in the SW Pacific indicates that this time period may provide an analog for future productivity for the midcentury (2055) under Intergovernmental Panel on Climate Change Representative Concentration Pathway 8.5 or for the end of the century (2100) under Representative Concentration Pathway 4.5. However, higher‐resolution, downscaled models, with realistic Southern Hemisphere Westerly Winds, will be necessary to forecast future productivity for this oceanographically complex region
This project was funded by the New Zealand Antarctic Research Institute (NZARI), with cofunding from NIWA core funding Coasts and Oceans Physical Resources program and GNS Global Change through Time program. This research was supported by KOPRI project (PE18030)
Peer Reviewed
2019-05-20T11:35:10Z
2019-05-20T11:35:10Z
2019-04
2019-05-20T11:35:10Z
artículo
http://purl.org/coar/resource_type/c_6501
doi: 10.1029/2019PA003574
issn: 2572-4517
Paleoceanography and Paleoclimatology 34(4): 580-599 (2019)
http://hdl.handle.net/10261/181776
10.1029/2019PA003574
http://dx.doi.org/10.13039/100008249
https://doi.org/10.1029/2019PA003574
Sí
open
American Geophysical Union