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Strong Southern Ocean carbon uptake evident in airborne observations
- Source :
- Science, 374(6572), 1275-1280. AMER ASSOC ADVANCEMENT SCIENCE, Science, 374(6572), 1275-1280, Science, Science, 2021, 374 (6572), pp.1275-1280. ⟨10.1126/science.abi4355⟩, Science 374 (2021) 6572, Science, American Association for the Advancement of Science, 2021, 374 (6572), pp.1275-1280. ⟨10.1126/science.abi4355⟩
- Publication Year :
- 2021
-
Abstract
- The Southern Ocean plays an important role in determining atmospheric carbon dioxide (CO2), yet estimates of air-sea CO2 flux for the region diverge widely. In this study, we constrained Southern Ocean air-sea CO2 exchange by relating fluxes to horizontal and vertical CO2 gradients in atmospheric transport models and applying atmospheric observations of these gradients to estimate fluxes. Aircraft-based measurements of the vertical atmospheric CO2 gradient provide robust flux constraints. We found an annual mean flux of –0.53 ± 0.23 petagrams of carbon per year (net uptake) south of 45°S during the period 2009–2018. This is consistent with the mean of atmospheric inversion estimates and surface-ocean partial pressure of CO2 (PCO2)–based products, but our data indicate stronger annual mean uptake than suggested by recent interpretations of profiling float observations.
- Subjects :
- 0106 biological sciences
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere
Multidisciplinary
WIMEK
010504 meteorology & atmospheric sciences
010604 marine biology & hydrobiology
Carbon uptake
Luchtkwaliteit
01 natural sciences
Air Quality
13. Climate action
Environmental chemistry
Environmental science
Life Science
14. Life underwater
Astrophysics::Earth and Planetary Astrophysics
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment
ComputingMilieux_MISCELLANEOUS
Physics::Atmospheric and Oceanic Physics
0105 earth and related environmental sciences
Subjects
Details
- Language :
- English
- ISSN :
- 00368075 and 10959203
- Database :
- OpenAIRE
- Journal :
- Science, 374(6572), 1275-1280. AMER ASSOC ADVANCEMENT SCIENCE, Science, 374(6572), 1275-1280, Science, Science, 2021, 374 (6572), pp.1275-1280. ⟨10.1126/science.abi4355⟩, Science 374 (2021) 6572, Science, American Association for the Advancement of Science, 2021, 374 (6572), pp.1275-1280. ⟨10.1126/science.abi4355⟩
- Accession number :
- edsair.doi.dedup.....8fb8be07d2e3ce48f0291f53aadec0df