Quasi‐Real‐Time and High‐Resolution Spatiotemporal Distribution of Ocean Anthropogenic CO<sub>2</sub>

Li, B. F.; Watanabe, Yutaka; Hosoda, Shigeki; Sato, Kanako; Nakano, Yoshiyuki

doi:10.1029/2018gl081639

Cited by 7 publications

(4 citation statements)

References 30 publications

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“…The BGC-Argo program is transforming our understanding of ocean variability over regional (e.g., Mediterranean Sea) and basin-scale efforts (e.g., SOCCOM; Southern Ocean Carbon and Climate Observations and Modeling) relying heavily on BGC-Argo measurements (Roemmich et al, 2019). The use of BGC-Argo floats has helped to increase the understanding of key bio-physical processes in the upper ocean, including (i) the initiation of spring phytoplankton blooms occurring prior to a significant shoaling of the mixed layer in the western North Atlantic (Boss and Behrenfeld, 2010), (ii) the development of new parameterizations to monitoring CO 2 in the subarctic North Pacific (Li et al, 2019), (iii) the temporal coupling between physical and biological properties with the development of the seasonal pycnocline in the western North Pacific (Sukigara et al, 2011), and (iv) a significant CO 2 outgassing in the high-latitude Southern Ocean linked to the upwelling of deep water (Gray et al, 2018), among others.…”

Section: Introductionmentioning

confidence: 99%

Argo Float Reveals Biogeochemical Characteristics Along the Freshwater Gradient Off Western Patagonia

et al. 2021

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The coastal region off Chilean Patagonia has been poorly studied due to the lack of available observations. Here we analyzed, by the very first time, biogeochemical (BGC) data to elucidate the role that biological and physical processes play on nitrate, oxygen, pH and hydrographic variables, along a salinity gradient off central Patagonia. Argo float profiles covering the upper ocean from December 2015 to July 2019 reveal that offshore waters are characterized by low temperatures and high salinities related to high oxygen and medium-high values of pH and nitrate. As the Argo float drifted onshore, freshwater influences the upper 50–100 m with low salinity and high temperature. Waters under the influence of the continental runoff were characterized by medium-to-high oxygen and pH levels, and the lowest nitrate concentrations. Interestingly, oxygen-deficient waters located beneath the freshwater-modified layer showed the lowest pH and highest nitrate. A comprehensive analysis of the temporal and vertical variability of the oxygen:nitrate ratio, in conjunction with biological-related and physical parameters, indicates that the BGC variability seems to be the result of a synergistic interaction between physical and biological processes, where the stratification sets up the environment and promotes the biological response that, in turn, is auto-regulated by modifying the chemical composition in the freshwater-influenced zone. The arrival of future floats with additional sensors (Chlorophyll/Fluorescence, Photosynthetically Active Radiation, Backscatter, etc.) will add new BGC properties that improve our understanding of the coastal marine response to the increasing freshwater input off western Patagonia in the context of climate change.

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Section: Introductionmentioning

confidence: 99%

Argo Float Reveals Biogeochemical Characteristics Along the Freshwater Gradient Off Western Patagonia

et al. 2021

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“…Below that depth, C ant decreased to +29.8 (±8.5) µmol kg −1 in the 300-400 m layer. To complement the C ant inventories based on the GLODAP data product (e.g., Gruber et al, 2019), C ant estimates derived from BGC-Argo floats, as evaluated here in the Southern Ocean, could be applied in other locations, as was previously tested in the North Pacific (Li et al, 2019).…”

Section: Temporal Variations In a T And C T : Examples From The Snapo...mentioning

confidence: 99%

A synthesis of ocean total alkalinity and dissolved inorganic carbon measurements from 1993 to 2022: the SNAPO-CO2-v1 dataset

Metzl,

Fin,

Lo Monaco

et al. 2024

Earth Syst. Sci. Data

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Abstract. Total alkalinity (AT) and dissolved inorganic carbon (CT) in the oceans are important properties with respect to understanding the ocean carbon cycle and its link to global change (ocean carbon sinks and sources, ocean acidification) and ultimately finding carbon-based solutions or mitigation procedures (marine carbon removal). We present a database of more than 44 400 AT and CT observations along with basic ancillary data (spatiotemporal location, depth, temperature and salinity) from various ocean regions obtained, mainly in the framework of French projects, since 1993. This includes both surface and water column data acquired in the open ocean, coastal zones and in the Mediterranean Sea and either from time series or dedicated one-off cruises. Most AT and CT data in this synthesis were measured from discrete samples using the same closed-cell potentiometric titration calibrated with Certified Reference Material, with an overall accuracy of ±4 µmol kg−1 for both AT and CT. The data are provided in two separate datasets – for the Global Ocean and the Mediterranean Sea (https://doi.org/10.17882/95414, Metzl et al., 2023), respectively – that offer a direct use for regional or global purposes, e.g., AT–salinity relationships, long-term CT estimates, and constraint and validation of diagnostic CT and AT reconstructed fields or ocean carbon and coupled climate–carbon models simulations as well as data derived from Biogeochemical-Argo (BGC-Argo) floats. When associated with other properties, these data can also be used to calculate pH, the fugacity of CO2 (fCO2) and other carbon system properties to derive ocean acidification rates or air–sea CO2 fluxes.

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“…Moreover, the current repertoire of species, habitats and intervention possibilities considered is limited. Nonetheless, the literature base necessary to support the development of adaptation measures exists and is building for many species and habitats; for example, we have a good idea of the pace [70] and spatio-temporal expression [71] of climate change, which species are most vulnerable to ocean acidification and warming [72,73], what engineering materials [74] royalsocietypublishing.org/journal/rstb Phil. Trans.…”

Section: Harnessing the Benthosmentioning

confidence: 99%

Benthic-based contributions to climate change mitigation and adaptation

Solan

Bennett

Mumby

et al. 2020

Phil. Trans. R. Soc. B

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Innovative solutions to improve the condition and resilience of ecosystems are needed to address societal challenges and pave the way towards a climate-resilient future. Nature-based solutions offer the potential to protect, sustainably manage and restore natural or modified ecosystems while providing multiple other benefits for health, the economy, society and the environment. However, the implementation of nature-based solutions stems from a discourse that is almost exclusively derived from a terrestrial and urban context and assumes that risk reduction is resolved locally. We argue that this position ignores the importance of complex ecological interactions across a range of temporal and spatial scales and misses the substantive contribution from marine ecosystems, which are notably absent from most climate mitigation and adaptation strategies that extend beyond coastal disaster management. Here, we consider the potential of sediment-dwelling fauna and flora to inform and support nature-based solutions, and how the ecology of benthic environments can enhance adaptation plans. We illustrate our thesis with examples of practice that are generating, or have the potential to deliver, transformative change and discuss where further innovation might be applied. Finally, we take a reflective look at the realized and potential capacity of benthic-based solutions to contribute to adaptation plans and offer our perspectives on the suitability and shortcomings of past achievements and the prospective rewards from sensible prioritization of future research. This article is part of the theme issue ‘Climate change and ecosystems: threats, opportunities and solutions'.

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Quasi‐Real‐Time and High‐Resolution Spatiotemporal Distribution of Ocean Anthropogenic CO₂

Cited by 7 publications

References 30 publications

Argo Float Reveals Biogeochemical Characteristics Along the Freshwater Gradient Off Western Patagonia

Argo Float Reveals Biogeochemical Characteristics Along the Freshwater Gradient Off Western Patagonia

A synthesis of ocean total alkalinity and dissolved inorganic carbon measurements from 1993 to 2022: the SNAPO-CO2-v1 dataset

Benthic-based contributions to climate change mitigation and adaptation

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Quasi‐Real‐Time and High‐Resolution Spatiotemporal Distribution of Ocean Anthropogenic CO2

Cited by 7 publications

References 30 publications

Argo Float Reveals Biogeochemical Characteristics Along the Freshwater Gradient Off Western Patagonia

Argo Float Reveals Biogeochemical Characteristics Along the Freshwater Gradient Off Western Patagonia

A synthesis of ocean total alkalinity and dissolved inorganic carbon measurements from 1993 to 2022: the SNAPO-CO2-v1 dataset

Benthic-based contributions to climate change mitigation and adaptation

Contact Info

Product

Resources

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Quasi‐Real‐Time and High‐Resolution Spatiotemporal Distribution of Ocean Anthropogenic CO₂