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  • 1
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    Photochemical lability of dissolved organic matter in the western tropical Pacific Ocean (2020)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Water samples collected from various depths of offshore South China and Philippine Seas were exposed to solar-simulated radiation. Photomineralization of dissolved organic carbon (DOC) and photobleaching of chromophoric DOM (CDOM) and its humic-like fluorescent constituent (FDOM) were observed in all samples.
    Keywords: bio-refractory DOC; CDOM; DOM; FDOM; oceans; Photochemistry
    Type: Dataset
    Format: application/zip, 5 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Vertical profiles of temperature and salinity at SEATS and F2 (2020)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Two stations were visited in the western tropical Pacific Ocean: The South-East Asia Time-series Station (SEATS) in the northern South China Sea (SCS) and station F2 in the Philippine Sea, ~230 km to the northeast of the Luzon Strait. Water samples were taken aboard the R/V Dong-Fang-Hong 2 in July and August 2017 from 13 depths between 5 m and 3800 m at SEATS and 11 depths between 5 m and 3200 m at F2 using Niskin bottles mounted on a SeaBird 911 conductivity-temperature-depth (CTD) rosette sampler. Vertical distribution of temperature and salinity with a depth interval of 1 m were obtained by CTD.
    Keywords: bio-refractory DOC; Bottle, Niskin; CDOM; CTD, Seabird; CTD-R; DEPTH, water; DO201707-08; DO201707-08_F2; DO201707-08_SEATS; DOM; Dongfanghong 2; Event label; FDOM; Latitude of event; Longitude of event; NIS; oceans; Philippine Sea; Photochemistry; Salinity; South China Sea; South-East Asia Time-series Station; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 13996 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Vertical profiles of dissolved organic matter in irradiated vs. unirradiated samples from SEATS and F2 (2020)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Two stations were visited in the western tropical Pacific Ocean: The South-East Asia Time-series Station (SEATS) in the northern South China Sea (SCS) and station F2 in the Philippine Sea, ~230 km to the northeast of the Luzon Strait. Water samples were taken aboard the R/V Dong-Fang-Hong 2 in July and August 2017 from 13 depths between 5 m and 3800 m at SEATS and 11 depths between 5 m and 3200 m at F2 using Niskin bottles mounted on a SeaBird 911 conductivity-temperature-depth (CTD) rosette sampler. Lab irradiation experiments of samples from different sampling depth were carried out. The samples were irradiated for 6 days under a SUNTEST XLS+ solar simulator equipped with a 1.5 kW xenon lamp and a special UV filter to remove radiation at wavelengths 〈290 nm. The samples before and after irradiation were defined as 'unirradiated samples' and 'irradiated samples', respectively. This table lists the chemical and optical properties of dissolved organic matter at different sampling depth before and after 6-d irradiation.
    Keywords: Absorption coefficient, 330 nm; Absorption coefficient, 330 nm, standard deviation; bio-refractory DOC; Bottle, Niskin; Calculated from absorption spectra; Carbon, organic, dissolved; Carbon, organic, dissolved, standard deviation; CDOM; DEPTH, water; DO201707-08; DO201707-08_F2; DO201707-08_SEATS; DOM; Dongfanghong 2; Event label; FDOM; Fluorescence, humic-like, component; Fluorescence, humic-like, component, standard deviation; Fluorescence, humic-like/protein-like ratio; Fluorescence, humic-like/protein-like ratio, standard deviation; Fluorescence, protein-like, component; Fluorescence, protein-like, component, standard deviation; Fluorescence spectrometer (Hitachi F4600); Latitude of event; Longitude of event; NIS; oceans; Philippine Sea; Photochemistry; Shimadzu TOC-L total organic carbon analyzer; South China Sea; South-East Asia Time-series Station; Spectral slope of colored dissolved organic matter absorption, 275-295 nm; Spectral slope of colored dissolved organic matter absorption, 275-295 nm, standard deviation; Spectrophotometer Shimadzu UV-2550
    Type: Dataset
    Format: text/tab-separated-values, 576 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    Vertical profiles of photochemically induced percent changes in dissolved organic matter in samples from SEATS and F2 (2020)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Two stations were visited in the western tropical Pacific Ocean: The South-East Asia Time-series Station (SEATS) in the northern South China Sea (SCS) and station F2 in the Philippine Sea, ~230 km to the northeast of the Luzon Strait. Water samples were taken aboard the R/V Dong-Fang-Hong 2 in July and August 2017 from 13 depths between 5 m and 3800 m at SEATS and 11 depths between 5 m and 3200 m at F2 using Niskin bottles mounted on a SeaBird 911 conductivity-temperature-depth (CTD) rosette sampler. The percentage change of different parameters was calculated as the ratio of the signal difference of property X before and after irradiation to that before irradiation.
    Keywords: bio-refractory DOC; Bottle, Niskin; CDOM; Change; Change, standard deviation; DEPTH, water; DO201707-08; DO201707-08_F2; DO201707-08_SEATS; DOM; Dongfanghong 2; Event label; FDOM; Latitude of event; Longitude of event; NIS; oceans; Philippine Sea; Photochemistry; South China Sea; South-East Asia Time-series Station
    Type: Dataset
    Format: text/tab-separated-values, 288 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    Time-course changes in dissolved organic matter in bottommost water samples from SEATS and F2 over a 10-d exposure to solar-simulated radiation (2020)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Two stations were visited in the western tropical Pacific Ocean: The South-East Asia Time-series Station (SEATS) in the northern South China Sea (SCS) and station F2 in the Philippine Sea, ~230 km to the northeast of the Luzon Strait. Water samples were taken aboard the R/V Dong-Fang-Hong 2 in July and August 2017 from 13 depths between 5 m and 3800 m at SEATS and 11 depths between 5 m and 3200 m at F2 using Niskin bottles mounted on a SeaBird 911 conductivity-temperature-depth (CTD) rosette sampler. A time-course irradiation with sampling time at 0, 1, 3, 5, 7, and 10 d was conducted for the bottommost samples from SEATS and F2. The value of different parameters was calculated as the ratio of the signal of property X at irradiation time t to that at time zero.
    Keywords: Absorption coefficient, 330 nm; Absorption coefficient, 330 nm, standard deviation; bio-refractory DOC; Bottle, Niskin; CDOM; Day of experiment; DEPTH, water; DO201707-08; DO201707-08_F2; DO201707-08_SEATS; DOM; Dongfanghong 2; Event label; FDOM; Fluorescence, humic-like, component; Fluorescence, humic-like, component, standard deviation; Fluorescence, protein-like, component; Fluorescence, protein-like, component, standard deviation; Fluorescence spectrometer (Hitachi F4600); Latitude of event; Longitude of event; NIS; oceans; Philippine Sea; Photochemistry; South China Sea; South-East Asia Time-series Station; Spectrophotometer Shimadzu UV-2550
    Type: Dataset
    Format: text/tab-separated-values, 84 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    Temporal evolution of dissolved organic matter properties of bottommost water sample from F2 during dark incubation (2020)
    PANGAEA
    Details
    Publication Date: 2023-02-12
    Description: Two stations were visited in the western tropical Pacific Ocean: The South-East Asia Time-series Station (SEATS) in the northern South China Sea (SCS) and station F2 in the Philippine Sea, ~230 km to the northeast of the Luzon Strait. Water samples were taken aboard the R/V Dong-Fang-Hong 2 in July and August 2017 from 13 depths between 5 m and 3800 m at SEATS and 11 depths between 5 m and 3200 m at F2 using Niskin bottles mounted on a SeaBird 911 conductivity-temperature-depth (CTD) rosette sampler. A time-course dark incubation (50 days) with sampling time at 0, 3, 7, 11, 15, 23, 34 and 50 d was conducted for the bottommost sample from F2 with and without prior exposure to solar radiation. The value of different parameters was calculated as the ratio of the signal of property X at irradiation time t to that at time zero.
    Keywords: Absorption coefficient, 330 nm; Absorption coefficient, 330 nm, standard deviation; bio-refractory DOC; Bottle, Niskin; Calculated from absorption spectra; Carbon, organic, dissolved; Carbon, organic, dissolved, standard deviation; CDOM; DEPTH, water; DO201707-08; DO201707-08_F2; DOM; Dongfanghong 2; Duration, number of days; Experimental treatment; FDOM; Fluorescence, humic-like, component; Fluorescence, humic-like, component, standard deviation; Fluorescence, protein-like, component; Fluorescence, protein-like, component, standard deviation; Fluorescence spectrometer (Hitachi F4600); NIS; oceans; Philippine Sea; Photochemistry; Shimadzu TOC-L total organic carbon analyzer; Spectral slope of colored dissolved organic matter absorption, 275-295 nm; Spectral slope of colored dissolved organic matter absorption, 275-295 nm, standard deviation; Spectrophotometer Shimadzu UV-2550
    Type: Dataset
    Format: text/tab-separated-values, 168 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    A database for carbonyl sulfide (OCS) and carbon disulfide (CS2) in seawater and marine boundary layer (2019)
    PANGAEA
    In:  Supplement to: Lennartz, Sinikka T; Marandino, Christa A; von Hobe, Marc; Andreae, Meinrat O; Aranami, Kazushi; Atlas, Elliot L; Berkelhammer, Max; Bingemer, Heinz G; Booge, Dennis; Cutter, Gregory A; Cortes, Pau; Kremser, Stefanie; Law, Cliff S; Marriner, Andrew; Simo, Rafel; Quack, Birgit; Uher, Günther; Xie, Huixiang; Xu, Xiaobin (2020): Marine carbonyl sulfide (OCS) and carbon disulfide (CS2): a compilation of measurements in seawater and the marine boundary layer. Earth System Science Data, 12(1), 591-609, https://doi.org/10.5194/essd-12-591-2020
    Details
    Publication Date: 2024-05-11
    Description: The database includes measurements of the trace gases carbonyl sulfide (OCS) and carbon disulfide (CS2) in seawater (in picomol per liter) and the marine boundary layer (parts per trillion, ppt). It consists of individual datasets compiled from published original data, digitalization from publications (pdf documents) and unpublished data. Only shipborne measurements or measurements from time series stations with a dominant marine signal are included. The database contains mainly surface ocean measurements, but few available profiles down to 〉1000 m are included as well. Temporal resolution ranges from 12 minutes to hourly or monthly intervals. The database includes the following metadata (if available): latitude, longitude, depth, time of sampling, meteorological and physical parameters, main reference, method, contributor(s). The database is intended to facilitate model evaluation and the identification of global patterns. Data in excel and txt-files are identical.
    Keywords: air-sea exchange; carbon disulfide; carbonyl sulfide; File content; File format; File name; File size; OCS_CS2_db; trace gas; Uniform resource locator/link to file
    Type: Dataset
    Format: text/tab-separated-values, 30 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 8
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    Evidence for significant photochemical production of carbon monoxide by particles in coastal and oligotrophic marine waters (2010)
    American Geophysical Union
    Details
    Publication Date: 2022-05-25
    Description: Author Posting. © American Geophysical Union, 2009. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 36 (2009): L23606, doi:10.1029/2009GL041158.
    Description: Carbon monoxide (CO) photoproduction from particulate and chromophoric dissolved organic matter (CDOM) was determined in seawater from open-ocean and coastal areas. In confirmatory tests, poisoned or non-poisoned filtered and unfiltered blue-water samples, were exposed to sunlight. CO photoproduction was 21–42% higher in the unfiltered than in the filtered samples. In a more thorough study utilizing concentrated particles prepared by 0.2-μm cross-flow filtration, samples containing varying levels of particles were irradiated under simulated solar radiation. Their CO photoproduction rates increased linearly with particle concentration factor. Particulate CO production was 11–35% of CDOM-based CO production. On an absorbed-photons basis, the former was 30–108% more efficient than the latter. This study suggests that in both coastal and blue waters these new-found particulate photoprocesses are of similar biogeochemical importance to the well-known CDOM photoproduction term.
    Description: NSERC and NSF provided financial support.
    Keywords: Carbon monoxide ; Particle photochemistry ; Seawater
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
    Location Call Number Limitation Availability
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    PAPER (OA)
  • 9
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    Biological consumption of carbon monoxide in Delaware Bay, NW Atlantic and Beaufort Sea (2011)
    Inter-Research
    Details
    Publication Date: 2022-05-26
    Description: Author Posting. © Inter-Research, 2005. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Marine Ecology Progress Series 290 (2005): 1-14, doi:10.3354/meps290001.
    Description: Microbial consumption is the dominant sink of oceanic carbon monoxide (CO), one of the major carbon-containing photoproducts of chromophoric dissolved organic matter in marine waters. This study presents first-order microbial CO consumption rate constants (kCO) determined using whole-water dark incubations in summer and fall in diverse marine ecosystems covering the Delaware Bay, NW Atlantic, and Beaufort Sea. The microbial CO consumption rate constant, kCO (mean ± SD) was 1.11 ± 0.76 h–1 in the Delaware Bay, 0.33 ± 0.26 h–1 in the coastal Atlantic, 0.099 ± 0.054 h–1 in the open Atlantic, 0.040 ± 0.012 h–1 in the coastal Beaufort Sea and 0.020 ± 0.0060 h–1 in the offshore Beaufort Sea. The kCO in the Delaware Bay covaried with chlorophyll a concentration ([chl a]), rising with increasing salinity in the range 0 to 19 and diminishing with further increasing salinity. The kCO in the Beaufort Sea is significantly positively correlated with [chl a]. Both the Atlantic and cross-system data sets showed significant positive correlations between kCO and the product of [chl a] and water temperature, suggesting that [chl a] can be used as an indicator of CO-consuming bacterial activity in the areas and seasons sampled in this study. Microbial CO consumption was shown to follow Wright-Hobbie kinetics, with variable but low half-saturation concentrations: ~1 nM in the Beaufort Sea and Gulf Stream and 2 to 18 nM in the coastal NW Atlantic. These low half-saturation concentrations suggest that microbial CO consumption in seawater is at times partly saturated, and that some previous microbial CO consumption rates determined with the commonly used 14CO method could be underestimates due to the addition of 14CO as a tracer substrate. The present study provides valuable data for coastal and Arctic waters whose kCO values are poorly or not constrained, including extensive data on the dependence of kCO on the concentration of CO.
    Description: T.P.U. was supported on an NSF REU grant (CHE-0243959, D.J.K) for a summer studentship on the RV ‘Endeavor’ 384 cruise. This study was supported by FQNT and NSERC grants (H.X.), and by NSF grants OCE-0223200 (O.C.Z.) and OCE-0096413 (D.J.K.).
    Keywords: Carbon monoxide ; Microbial consumption ; Wright-Hobbie kinetics ; Marine waters
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
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    PAPER (OA)
  • 10
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    Marine carbonyl sulfide (OCS) and carbon disulfide (CS2): a compilation of measurements in seawater and the marine boundary layer (2020)
    Copernicus Publications (EGU)
    Details
    Publication Date: 2023-02-08
    Description: Carbonyl sulfide (OCS) and carbon disulfide (CS2) are volatile sulfur gases that are naturally formed in seawater and exchanged with the atmosphere. OCS is the most abundant sulfur gas in the atmosphere, and CS2 is its most important precursor. They have gained interest due to their direct (OCS) or indirect (CS2 via oxidation to OCS) contribution to the stratospheric sulfate aerosol layer. Furthermore, OCS serves as a proxy to constrain terrestrial CO2 uptake by vegetation. Oceanic emissions of both gases contribute a major part to their atmospheric concentration. Here we present a database of previously published and unpublished, mainly ship-borne measurements in seawater and the marine boundary layer for both gases, available at https://doi.pangaea.de/10.1594/PANGAEA.905430 (Lennartz et al., 2019). The database contains original measurements as well as data digitalized from figures in publications from 42 measurement campaigns, i.e. cruises or time series stations, ranging from 1982 to 2019. OCS data cover all ocean basins except for the Arctic Ocean, as well as all months of the year, while the CS2 dataset shows large gaps in spatial and temporal coverage. Concentrations are consistent across different sampling and analysis techniques for OCS. The database is intended to support the identification of global spatial and temporal patterns and to facilitate the evaluation of model simulations.
    Type: Article , PeerReviewed
    Format: text
    Format: text
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    OceanRep: Article in a Scientific Journal - peer-reviewed
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