Carbon and nutrient transports in the subtropics ...
Abstract: As a result of the AMOC the North Atlantic absorbs a disproportionately large amount of carbon for its area. Using observations from RAPID-MOCHA, Argo and GO-SHIP at 26N we reconstruct time series of anthropogenic carbon and inorganic nutrient transports into the North Atlantic. On average...
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| Format: | Text |
| Language: | English |
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Zenodo
2023
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| Online Access: | https://dx.doi.org/10.5281/zenodo.7845013 https://zenodo.org/record/7845013 |
| Summary: | Abstract: As a result of the AMOC the North Atlantic absorbs a disproportionately large amount of carbon for its area. Using observations from RAPID-MOCHA, Argo and GO-SHIP at 26N we reconstruct time series of anthropogenic carbon and inorganic nutrient transports into the North Atlantic. On average half of the anthropogenic carbon that is accumulating in the North Atlantic is transported into the region across 26N, the remainder comes from local air-sea fluxes. While most of the variance in the northward anthropogenic carbon transport can be described by variability in the strength of the AMOC there is a significant contribution form the increasing anthropogenic carbon concentrations, preferentially accumulating in the near-surface. The persistently southward nutrient transports across 26N exceed external nutrient sources and thus in themselves indicate non steady-state behaviour. In addition increasing remineralised:preformed nutrient ratios at 26N indicate further non steady-state behavoiur and regionally ... |
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