Response of marine methane dissolved concentrations and emissions in the Southern North Sea to the European 2018 heatwave

Borges, Alberto; Royer, Colin; Martin, Jon Lapeyra; Champenois, Willy; Gypens, Nathalie

doi:10.1016/j.csr.2019.104004

Cited by 20 publications

(23 citation statements)

References 62 publications

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“…Extreme events, such as the heat wave in the summer of 2018, may have also contributed to some of the differences (e.g. increase in CO2 concentrations) that we present in this study (Borges et al, 2019). Additionally, the solubility of CO2 is lower in warmer water (Wiebe and Gaddy, 1940), reducing the uptake of atmospheric CO2 (Yamamoto et al, 2018).…”

Section: Air-sea Co2 Fluxmentioning

confidence: 72%

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Air–sea carbon flux from high-temporal-resolution data of in situ CO<sub>2</sub> measurements in the southern North Sea

Pint

Everaert

Theetaert

et al. 2020

Preprint

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Abstract. An important element to keep track of global change is the atmosphere–water exchange of carbon dioxide (CO2) in the ocean as it provides insight in how much CO2 is incorporated in the ocean (i.e. the ocean as a sink for CO2) or emitted to the atmosphere (i.e. the ocean as a source). To date, only few high-resolution observation sets are available to quantify the spatiotemporal variability of air–sea CO2 fluxes. In this study, we used observations of pCO2 collected daily at the ICOS station Thornton Buoy in the southern North Sea from February until December 2018 to calculate air–sea CO2 fluxes. Our results show a seasonal variability of the air–sea carbon flux, with the sea being a carbon sink from February until June switching to a carbon source in July and August, before switching back to a sink until December. We calculated that the sink was largest in April (−0.95 ± 0.90 mmol C m−2 d−1), while in August, the source was at its maximum (0.08 ± 0.13 mmol C m−2 d−1). On an annual basis, we found a sink for atmospheric CO2 of 130.19 ± 149.93 mmol C m−2 y−1. Apart from region- and basin-scale estimates of the air–sea CO2 flux, also local measurements are important to grasp local dynamics of the flux and its interactions with biogeochemical processes.

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Section: Air-sea Co2 Fluxmentioning

confidence: 72%

“…biogeochemical cycling (e.g. Borges et al, 2019;Gypens et al, 2011Gypens et al, , 2004. In terms of air-sea carbon fluxes, the BCS shifted from being a carbon source in the 1950s to a carbon sink in the 1980s (Gypens et al, 2009), with more recent source-sink turnovers (Gypens et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Air–sea carbon flux from high-temporal-resolution data of in situ CO<sub>2</sub> measurements in the southern North Sea

Pint

Everaert

Theetaert

et al. 2020

Preprint

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“…2). Targeted programs have enabled invaluable insights into the role of oxygen-deficient zones in N 2 O cycling (Babbin et al, 2015;Bourbonnais et al, 2017;Frey et al, 2020) and the exploration of CH 4 -rich seeps and vents (Foucher et al, 2009;Suess, 2010;Boetius and Wenzhöfer, 2013). Basin-scale repeat hydrographic surveys (e.g., the international GO-SHIP program) have facilitated extensive water column mapping to identify relevant water masses and evaluate ventilation rates ( Fig.…”

Section: Coordination Of Oceanic Ch 4 and N O Measurementsmentioning

confidence: 99%

“…The grey dots represent individual data points and the red dots with error bars represent mean ±1 SD of binned data, using O 2 bins of 10 µM width and seafloor depth bins of 10 m width. Ruppel and Kessler, 2017;Borges et al, 2019). Effort is thus focused on quantifying the fraction of CH 4 generated in or released from marine sediments that ultimately enters the atmosphere, particularly on shallow continental shelves and in coastal ecosystems.…”

Section: Methane In Marine Environmentsmentioning

confidence: 99%

Ideas and perspectives: A strategic assessment of methane and nitrous oxide measurements in the marine environment

et al. 2020

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Abstract. In the current era of rapid climate change, accurate characterization of climate-relevant gas dynamics – namely production, consumption, and net emissions – is required for all biomes, especially those ecosystems most susceptible to the impact of change. Marine environments include regions that act as net sources or sinks for numerous climate-active trace gases including methane (CH4) and nitrous oxide (N2O). The temporal and spatial distributions of CH4 and N2O are controlled by the interaction of complex biogeochemical and physical processes. To evaluate and quantify how these mechanisms affect marine CH4 and N2O cycling requires a combination of traditional scientific disciplines including oceanography, microbiology, and numerical modeling. Fundamental to these efforts is ensuring that the datasets produced by independent scientists are comparable and interoperable. Equally critical is transparent communication within the research community about the technical improvements required to increase our collective understanding of marine CH4 and N2O. A workshop sponsored by Ocean Carbon and Biogeochemistry (OCB) was organized to enhance dialogue and collaborations pertaining to marine CH4 and N2O. Here, we summarize the outcomes from the workshop to describe the challenges and opportunities for near-future CH4 and N2O research in the marine environment.

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“…Seabed CH 4 emissions are hypothesized to increase in a warming ocean through the decomposition of gas hydrates, the degradation of subsea permafrost under some high-latitude seas, and the increased biodegradation of sediment carbon (Romanovskii et al, 2005;Biastoch et al, 2011;Ruppel and Kessler, 2017;Borges et al, 2019). Effort is thus focused on quantifying the fraction of CH 4 generated in or released from marine sediments that ultimately enters the https://doi.org/10.5194/bg-2020-270 Preprint.…”

Section: Coordination Of Oceanic Ch 4 and N 2 O Measurementsmentioning

confidence: 99%

Ideas and perspectives: A strategic assessment of methane and nitrous oxide measurements in the marine environment

Wilson¹,

Al‐Haj²,

Bourbonnais³

et al. 2020

Preprint

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Abstract. In the current era of rapid climate change, accurate characterization of climate-relevant gas dynamics – namely production, consumption and net emissions – is required for all biomes, especially those ecosystems most susceptible to the impact of change. Marine environments include regions that act as net sources or sinks for a number of climate-active trace gases including methane (CH4) and nitrous oxide (N2O). The temporal and spatial distributions of CH4 and N2O are controlled by the interaction of complex biogeochemical and physical processes. To evaluate and quantify the importance of these mechanisms relevant to marine CH4 and N2O cycling requires a combination of traditional scientific disciplines including oceanography, microbiology, and numerical modeling. Fundamental to all of these efforts is ensuring that the datasets produced by independent scientists around the world are comparable and interoperable. Equally critical is transparent communication within the research community about the technical improvements required to increase our collective understanding of marine CH4 and N2O. An Ocean Carbon & Biogeochemistry (OCB) sponsored workshop was organized to enhance dialogue and collaborations pertaining to marine CH4 and N2O. Here, we summarize the outcomes from the workshop to describe the challenges and opportunities for near-future CH4 and N2O research in the marine environment.

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Response of marine methane dissolved concentrations and emissions in the Southern North Sea to the European 2018 heatwave

Cited by 20 publications

References 62 publications

Air–sea carbon flux from high-temporal-resolution data of in situ CO<sub>2</sub> measurements in the southern North Sea

Air–sea carbon flux from high-temporal-resolution data of in situ CO<sub>2</sub> measurements in the southern North Sea

Ideas and perspectives: A strategic assessment of methane and nitrous oxide measurements in the marine environment

Ideas and perspectives: A strategic assessment of methane and nitrous oxide measurements in the marine environment

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Response of marine methane dissolved concentrations and emissions in the Southern North Sea to the European 2018 heatwave

Cited by 20 publications

References 62 publications

Air–sea carbon flux from high-temporal-resolution data of in situ CO&lt;sub&gt;2&lt;/sub&gt; measurements in the southern North Sea

Air–sea carbon flux from high-temporal-resolution data of in situ CO&lt;sub&gt;2&lt;/sub&gt; measurements in the southern North Sea

Ideas and perspectives: A strategic assessment of methane and nitrous oxide measurements in the marine environment

Ideas and perspectives: A strategic assessment of methane and nitrous oxide measurements in the marine environment

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Product

Resources

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Air–sea carbon flux from high-temporal-resolution data of in situ CO<sub>2</sub> measurements in the southern North Sea

Air–sea carbon flux from high-temporal-resolution data of in situ CO<sub>2</sub> measurements in the southern North Sea