Long-term Growth in Southern Ocean Carbon Uptake
Abstract
The Southern Ocean is a critical region for uptake of anthropogenic carbon, and is a region where models suggest the rate of ocean carbon uptake should be increasing. At the same time, this region is highly under-sampled and subject to intense interannual variability. We make use of newly released, expanded datasets of surface ocean partial pressure of CO2 (pCO2) data to assess whether or not a growing sink can be detected in this highly dynamic region. The degree to which these trends are reflected in long-term Drake Passage timeseries and observations from other platforms will also be considered. These findings are put into a wider context of detectability of change using the NCAR CESM Large Ensemble with which we determine how many years of data is necessary to extract signals of climate change from natural variability.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2016
- Bibcode:
- 2016AGUFMOS42A..07M
- Keywords:
-
- 4805 Biogeochemical cycles;
- processes;
- and modeling;
- OCEANOGRAPHY: BIOLOGICAL AND CHEMICALDE: 4806 Carbon cycling;
- OCEANOGRAPHY: BIOLOGICAL AND CHEMICALDE: 4815 Ecosystems;
- structure;
- dynamics;
- and modeling;
- OCEANOGRAPHY: BIOLOGICAL AND CHEMICALDE: 4845 Nutrients and nutrient cycling;
- OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL