Seasonal and Spatial Variability in the Biogenic Production and Consumption of Volatile Organic Compounds (VOCs) by Marine Plankton in the North Atlantic Ocean

Davie‐Martin, Cleo L.; Giovannoni, Stephen J.; Behrenfeld, Michael J.; Penta, W. B.; Halsey, Kimberly H.

doi:10.3389/fmars.2020.611870

Cited by 18 publications

(22 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Note that k prod was the highest coinciding with higher [chla]. This is consistent with a recent study 44 where measurement of the net biological isoprene production (i.e. productionconsumption rates) across seasons in the open ocean was attempted; net production rates increased in May, coinciding with a large increase in [chla] and phytoplankton cell abundance.…”

Section: Variability Of Isoprene Loss Rate Constants In the Open Oceansupporting

confidence: 90%

Substantial loss of isoprene in the surface ocean due to chemical and biological consumption

Simó

Cortés-Greus

Rodríguez-Ros

et al. 2022

Commun Earth Environ

View full text Add to dashboard Cite

Isoprene contributes to the formation of ozone and secondary organic aerosol in the atmosphere, and thus influences cloud albedo and climate. Isoprene is ubiquitous in the surface open ocean where it is produced by phytoplankton, however emissions from the global ocean are poorly constrained, in part due to a lack of knowledge of oceanic sink or degradation terms. Here, we present analyses of ship-based seawater incubation experiments with samples from the Mediterranean, Atlantic, tropical Pacific and circum-Antarctic and Subantarctic oceans to determine chemical and biological isoprene consumption in the surface ocean. We find the total isoprene loss to be comprised of a constant chemical loss rate of 0.05 ± 0.01 d−1 and a biological consumption rate that varied between 0 and 0.59 d−1 (median 0.03 d−1) and was correlated with chlorophyll-a concentration. We suggest that isoprene consumption rates in the surface ocean are of similar magnitude or greater than ventilation rates to the atmosphere, especially in chlorophyll-a rich waters.

show abstract

Section: Variability Of Isoprene Loss Rate Constants In the Open Oceansupporting

confidence: 90%

Substantial loss of isoprene in the surface ocean due to chemical and biological consumption

Simó

Cortés-Greus

Rodríguez-Ros

et al. 2022

Commun Earth Environ

View full text Add to dashboard Cite

show abstract

“…Acetone is thought to be produced primarily from photochemical reactions (De Bruyn et al, 2011a;Dixon et al, 2013;Kieber et al, 1990) and consumed by microbes (Dixon et al, 2014a). A biological source of acetone has also been suggested from culture experiments (Davie- Martin et al, 2020;Halsey et al, 2017) and correlations of field data (Schlundt et al, 2017), though it is thought to be small. Acetaldehyde is produced by photochemistry (Dixon et al, 2013;Zhu and Kieber 2018;Kieber et al, 1990;De Bruyn et al, 2011a) and in a light dependent fashion from phytoplankton (Davie- Martin et al, 2020;Halsey et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Sea ice concentration impacts dissolved organic gases in the Canadian Arctic

et al. 2022

View full text Add to dashboard Cite

Abstract. The marginal sea ice zone has been identified as a source of different climate-active gases to the atmosphere due to its unique biogeochemistry. However, it remains highly undersampled, and the impact of summertime changes in sea ice concentration on the distributions of these gases is poorly understood. To address this, we present measurements of dissolved methanol, acetone, acetaldehyde, dimethyl sulfide, and isoprene in the sea ice zone of the Canadian Arctic from the surface down to 60 m. The measurements were made using a segmented flow coil equilibrator coupled to a proton-transfer-reaction mass spectrometer. These gases varied in concentrations with depth, with the highest concentrations generally observed near the surface. Underway (3–4 m) measurements showed higher concentrations in partial sea ice cover compared to ice-free waters for most compounds. The large number of depth profiles at different sea ice concentrations enables the proposition of the likely dominant production processes of these compounds in this area. Methanol concentrations appear to be controlled by specific biological consumption processes. Acetone and acetaldehyde concentrations are influenced by the penetration depth of light and stratification, implying dominant photochemical sources in this area. Dimethyl sulfide and isoprene both display higher surface concentrations in partial sea ice cover compared to ice-free waters due to ice edge blooms. Differences in underway concentrations based on sampling region suggest that water masses moving away from the ice edge influences dissolved gas concentrations. Dimethyl sulfide concentrations sometimes display a subsurface maximum in ice -free conditions, while isoprene more reliably displays a subsurface maximum. Surface gas concentrations were used to estimate their air–sea fluxes. Despite obvious in situ production, we estimate that the sea ice zone is absorbing methanol and acetone from the atmosphere. In contrast, dimethyl sulfide and isoprene are consistently emitted from the ocean, with marked episodes of high emissions during ice-free conditions, suggesting that these gases are produced in ice-covered areas and emitted once the ice has melted. Our measurements show that the seawater concentrations and air–sea fluxes of these gases are clearly impacted by sea ice concentration. These novel measurements and insights will allow us to better constrain the cycling of these gases in the polar regions and their effect on the oxidative capacity and aerosol budget in the Arctic atmosphere.

show abstract

“…While primary aerosol are the focus of this review, the significance of secondary aerosol that form in the atmosphere from gaseous precursors must be mentioned for a complete overview of marine biogenic aerosol. Secondary aerosols are produced via the oxidation of volatile organic compounds (VOCs) emitted by phytoplankton and bacteria (Halsey et al, 2017;Davie-Martin et al, 2020;Fox et al, 2020;Moore et al, 2020;Croft et al, 2021;Zheng et al, 2021), as well as photochemical reactions in the SML (Bernard et al, 2016;Brüggemann et al, 2018). Marine VOCs include acetaldehyde, acetone, acetonitrile, dimethyl sulfide (DMS), isoprene, methanethiol, methanol isoprene and halocarbons (Shaw et al, 2003;Dixon et al, 2013;Liu et al, 2013a,b;Halsey et al, 2017;Davie-Martin et al, 2020).…”

Section: Generation Of Marine Aerosolmentioning

confidence: 99%

“…Secondary aerosols are produced via the oxidation of volatile organic compounds (VOCs) emitted by phytoplankton and bacteria (Halsey et al, 2017;Davie-Martin et al, 2020;Fox et al, 2020;Moore et al, 2020;Croft et al, 2021;Zheng et al, 2021), as well as photochemical reactions in the SML (Bernard et al, 2016;Brüggemann et al, 2018). Marine VOCs include acetaldehyde, acetone, acetonitrile, dimethyl sulfide (DMS), isoprene, methanethiol, methanol isoprene and halocarbons (Shaw et al, 2003;Dixon et al, 2013;Liu et al, 2013a,b;Halsey et al, 2017;Davie-Martin et al, 2020). DMS is a source of secondary aerosol in the form of non-sea salt sulfates, which is proposed as a significant source of cloud condensation nuclei (CCN) (Charlson et al, 1987;Gantt and Meskhidze, 2013;Quinn et al, 2019).…”

Section: Generation Of Marine Aerosolmentioning

confidence: 99%

Ocean Aerobiology

2021

View full text Add to dashboard Cite

Ocean aerobiology is defined here as the study of biological particles of marine origin, including living organisms, present in the atmosphere and their role in ecological, biogeochemical, and climate processes. Hundreds of trillions of microorganisms are exchanged between ocean and atmosphere daily. Within a few days, tropospheric transport potentially disperses microorganisms over continents and between oceans. There is a need to better identify and quantify marine aerobiota, characterize the time spans and distances of marine microorganisms’ atmospheric transport, and determine whether microorganisms acclimate to atmospheric conditions and remain viable, or even grow. Exploring the atmosphere as a microbial habitat is fundamental for understanding the consequences of dispersal and will expand our knowledge of biodiversity, biogeography, and ecosystem connectivity across different marine environments. Marine organic matter is chemically transformed in the atmosphere, including remineralization back to CO2. The magnitude of these transformations is insignificant in the context of the annual marine carbon cycle, but may be a significant sink for marine recalcitrant organic matter over long (∼104 years) timescales. In addition, organic matter in sea spray aerosol plays a significant role in the Earth’s radiative budget by scattering solar radiation, and indirectly by affecting cloud properties. Marine organic matter is generally a poor source of cloud condensation nuclei (CCN), but a significant source of ice nucleating particles (INPs), affecting the formation of mixed-phase and ice clouds. This review will show that marine biogenic aerosol plays an impactful, but poorly constrained, role in marine ecosystems, biogeochemical processes, and the Earth’s climate system. Further work is needed to characterize the connectivity and feedbacks between the atmosphere and ocean ecosystems in order to integrate this complexity into Earth System models, facilitating future climate and biogeochemical predictions.

show abstract

Seasonal and Spatial Variability in the Biogenic Production and Consumption of Volatile Organic Compounds (VOCs) by Marine Plankton in the North Atlantic Ocean

Cited by 18 publications

References 59 publications

Substantial loss of isoprene in the surface ocean due to chemical and biological consumption

Substantial loss of isoprene in the surface ocean due to chemical and biological consumption

Sea ice concentration impacts dissolved organic gases in the Canadian Arctic

Ocean Aerobiology

Contact Info

Product

Resources

About