Global surface-ocean pCO2 and sea–air CO2 flux variability from an observation-driven ocean mixed-layer scheme
Christian Rödenbeck,Ralph F. Keeling,Dorothee C. E. Bakker,Nicolas Metzl,Are Olsen,Christopher L. Sabine,Martin Heimann +6 more
TLDR
A temporally and spatially resolved estimate of the global surface-ocean CO2 partial pressure field and the sea-air CO2 flux is presented, obtained by fitting a simple data-driven diagnostic model of ocean mixed-layer biogeochemistry to surface-of-the-atmosphere (CO2) partial pressure data from the SOCAT v15 database.Abstract:
A temporally and spatially resolved estimate of the global surface-ocean CO2 partial pressure field and the sea–air CO2 flux is presented, obtained by fitting a simple data-driven diagnostic model of ocean mixed-layer biogeochemistry to surface-ocean CO2 partial pressure data from the SOCAT v15 database Results include seasonal, interannual, and short-term (daily) variations In most regions, estimated seasonality is well constrained from the data, and compares well to the widely used monthly climatology by Takahashi et al (2009) Comparison to independent data tentatively supports the slightly higher seasonal variations in our estimates in some areas We also fitted the diagnostic model to atmospheric CO2 data The results of this are less robust, but in those areas where atmospheric signals are not strongly influenced by land flux variability, their seasonality is nevertheless consistent with the results based on surface-ocean data From a comparison with an independent seasonal climatology of surface-ocean nutrient concentration, the diagnostic model is shown to capture relevant surface-ocean biogeochemical processes reasonably well Estimated interannual variations will be presented and discussed in a companion paperread more
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Attribution of Space‐Time Variability in Global‐Ocean Dissolved Inorganic Carbon
TL;DR: In this article , the authors use the Estimating the Circulation and Climate of the Ocean-Darwin ocean biogeochemistry state estimate to generate a global-ocean, data-constrained DIC budget and investigate how spatial and seasonal-to-interannual variability in three-dimensional circulation, air-sea CO2 flux, and biological processes have modulated the ocean sink for 1995-2018.
Indo‐Pacific Sector Dominates Southern Ocean Carbon Outgassing
Channing J. Prend,Alison R. Gray,Lynne D. Talley,Sarah T. Gille,F. Alexander Haumann,Kenneth S. Johnson,Stephen C. Riser,Isabella Rosso,Jade Sauvé,Jorge L. Sarmiento +9 more
TL;DR: In this paper , the authors examined Southern Ocean air-sea CO2 fluxes and the pathways that transfer carbon from the ocean interior into the mixed layer where airsea exchange occurs.
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Influence of the oceanic cool skin layer on global air–sea CO2 flux estimates
TL;DR: In this article, the authors explored the impact of replacing a mixed layer temperature measurement with a skin temperature measurement to improve global estimates of air-sea CO2 exchange, making use of extensive satellite and in situ measurements.
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Variability in the Global Ocean Carbon Sink From 1959 to 2020 by Correcting Models With Observations
TL;DR: In this article , the LDEO-Hybrid Physics Data Product (LDEO-HPD) interpolates sparse surface ocean CO2 data to global coverage by using GOBMs as priors, and applying machine learning to estimate full-coverage corrections.
Journal ArticleDOI
Indo‐Pacific Sector Dominates Southern Ocean Carbon Outgassing
TL;DR: In this article , the authors examined Southern Ocean air-sea CO2 fluxes and the pathways that transfer carbon from the ocean interior into the mixed layer where airsea exchange occurs.
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