Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 Quiñones Bergeret Renato rquinones@udec.cl Tapia Fabián J ftapia@oceanografia.udec.cl 0000-0001-9661-6069 2023 A time series study of nitrous oxide distribution and ancillary variables off Conception, Chile (2016-2020) dataset https://doi.org/10.1594/PANGAEA.957416 2023-05-31T14:37:43 Time series off Concepcion (Chile) was initiated on half 2002 by Concepción University (Chile) in order to characterize the main scales of temporal variability of main biogeochemical carbon (C )and nitrogen (N) cycling at a single location and relate them to physical processes (i.e. El Niño-Southern Oscillation, ENSO). The central area off Chile has the widest continental shelf of Chile, extended about 40 km offshore. This system presents other important features: it is under the influence of wind-driven coastal upwelling with a strong seasonal pattern and it is certainly one of most productive regions in the ocean and also is characterized by a semi-permanent (fluctuating in extension) oxygen minimum zone (OMZ) extending from ca. 30 m depth down to depth, which bath the shelf sediments. Its hydrographic structure is strongly affected by runoff from the Itata and Bio Bio river (up to 3000 m3 s-1) with maximum discharges during winter. This data report was focussed on nitrous oxide (N2O) measurements and ancillary variables at monthly frequency to determine how changes in the nutricline, oxycline and others control N2O distribution. Starting on July 2002 the time series was initiated with a single station located off Dichato, corresponding to Station 18, located at 36º30,8' S - 73º07,7' W, with a depth of 90 m depth. At this station, a CTD with oxygen sensor (CTDO) was deployed from surface to near the bottom and water samples was obtained with 10L Niskin bottles, at the following discrete depth: surface, 5, 10, 15, 20, 30, 50, 65, 80 m depth. Nitrate and N2O (a greenhouse gas) was included in the measurement using methodology delineated by Farías et al. (2015). This dataset includes data that was collected with the research vessel KAY KAY II between 2016 and 2020. Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 Besoain V García-Loyola S 2015 Presence of nitrous oxide hotspots in the coastal upwelling area off central Chile: an analysis of temporal variability based on ten years of a biogeochemical time series journal article Environmental Research Letters 10(4) https://doi.org/10.1088/1748-9326/10/4/044017 044017 Wilson Samuel T 0000-0002-7289-0909 Bange Hermann W hbange@geomar.de https://www.geomar.de/hbange/ 0000-0003-4053-1394 Arévalo-Martínez Damian L darevalo@geomar.de 0000-0003-2933-1586 Barnes Jonathan Borges Alberto Vieira alberto.borges@ulg.ac.be 0000-0002-5434-2247 Brown Ian 0000-0001-7423-2064 Bullister John L bullister@pmel.noaa.gov Burgos Macarena Capelle David W David.Capelle@dfo-mpo.gc.ca Casso Michael de la Paz Mercedes 0000-0002-9267-930X Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 Fenwick Lindsay lindsayafenwick@gmail.com Ferron Sara Garcia Gerardo Glockzin Michael michael.glockzin@io-warnemuende.de http://www.io-warnemuende.de/michael-glockzin-en.html 0000-0002-5304-343X Karl David Michael dkarl@soest.hawaii.edu 0000-0002-6660-6721 Kock Annette akock@geomar.de Laperriere Sarah Law Cliff S cliff.law@niwa.co.nz 0000-0002-7669-2475 Manning Cara C M cara.manning@uconn.edu 0000-0002-4984-5093 Marriner Andrew Myllykangas Jukka-Pekka jukka-pekka.myllykangas@helsinki.fi 0000-0001-5259-6852 Pohlman John W Rees Andrew P 0000-0003-3070-3447 Santoro Alyson 0000-0003-2503-8219 Tortell Philippe Daniel ptortell@eoas.ubc.ca 0000-0003-0212-2151 Upstill-Goddard Robert C 0000-0003-3396-284X Wisegarver David P Zhang Gui-Ling Rehder Gregor gregor.rehder@io-warnemuende.de http://www.io-warnemuende.de/gregor-rehder.html 0000-0002-0597-9989 2018 An intercomparison of oceanic methane and nitrous oxide measurements journal article Biogeosciences 15(19) https://doi.org/10.5194/bg-15-5891-2018 5891-5907 -73.12909999999903 -73.12909999999903 -36.5132999999999 -36.5132999999999 -73.12909999999903 -36.5132999999999 2016-01-20T08:26:00 2020-12-29T10:16:00 1.0 90.0 vertical profile National Agency for Research and Development ANID https://anid.cl/ https://doi.org/10.13039/501100002848 1200861 FONDECYT Conception_time-series -36.5133 -73.1291 -92.0 2016-01-20T08:26:00 2020-12-29T10:16:00 KKII_2016-2020 KKII_2016-2020 2016-01-20T00:00:00 2016-01-20 2020-12-29T00:00:00 2020-12-29 Kay Kay II https://oceanografia.udec.cl/infraestructura/embarcaciones/l-c-kay-kay-ii/ Kay Kay II https://oceanografia.udec.cl/infraestructura/embarcaciones/l-c-kay-kay-ii/ CTD/Rosette CTD-RO CTD http://vocab.nerc.ac.uk/collection/L05/current/130/ CTD & XBT Water samplers 3377 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Further information on methods: * Nitrate & Nitrite: filtered 45 µm , colorimetric determination, Seal Autoanalyzer * Nitrous oxide: headspace technique, gas chromatography, ECD detectorT (according to Wilson et al. 2018) Event label Event Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 Event Cruise/expedition Expedition Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 Expedition LATITUDE Latitude http://en.wikipedia.org/wiki/ISO_6709 Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 Latitude LONGITUDE Longitude http://en.wikipedia.org/wiki/ISO_6709 Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 Longitude DATE/TIME Date/Time http://en.wikipedia.org/wiki/ISO_8601 Time T http://dbpedia.org/resource/Time Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 Date/Time DEPTH, water Depth water m depth http://purl.obolibrary.org/obo/PATO_0001595 water http://purl.obolibrary.org/obo/CHEBI_15377 Length L http://dbpedia.org/resource/Length Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 Depth water [m] Temperature, water Temp °C Temperature Θ http://dbpedia.org/resource/Temperature water http://purl.obolibrary.org/obo/CHEBI_15377 CTD, Sea-Bird, SBE 19plus http://www.seabird.com/sbe19plusv2-seacat-ctd CTD & XBT Sea-Bird SBE 19plus SEACAT CTD http://vocab.nerc.ac.uk/collection/L22/current/TOOL0047/ Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 Temp [°C] Salinity Sal salinity http://purl.obolibrary.org/obo/PATO_0085001 CTD, Sea-Bird, SBE 19plus http://www.seabird.com/sbe19plusv2-seacat-ctd CTD & XBT Sea-Bird SBE 19plus SEACAT CTD http://vocab.nerc.ac.uk/collection/L22/current/TOOL0047/ Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 psu Sal Oxygen, dissolved DO ml/l oxygen O https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:25805 dissolved http://purl.obolibrary.org/obo/PATO_0001986 CTD, Sea-Bird, SBE 19plus http://www.seabird.com/sbe19plusv2-seacat-ctd CTD & XBT Sea-Bird SBE 19plus SEACAT CTD http://vocab.nerc.ac.uk/collection/L22/current/TOOL0047/ Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 DO [ml/l] Fluorescence Fluorescence arbitrary units fluorescence http://purl.obolibrary.org/obo/PATO_0000018 Fluorometer, Turner Designs, 10-AU Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 relative Unit Fluorescence [arbitrary units] Nitrate [NO3]- µmol/l nitrate http://purl.obolibrary.org/obo/CHEBI_17632 Molar Concentration SEAL AA3 autoanalyzer Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 mean of triplicate samples [NO3]- [µmol/l] Nitrite [NO2]- µmol/l nitrite http://purl.obolibrary.org/obo/CHEBI_16301 Molar Concentration SEAL AA3 autoanalyzer Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 mean of triplicate samples [NO2]- [µmol/l] Nitrous oxide N2O nmol/l nitrous oxide Molar Concentration Gas chromatograph with an electron capture detector (GC-ECD) Chromatographs & spectrometers gas chromatographs http://vocab.nerc.ac.uk/collection/L05/current/LAB02/ Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 mean of triplicate samples N2O [nmol/l] CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable Dissolved oxygen nitrate Nitrous oxide 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term47704 term47709 term48287 term67626 term68026 term68027 term72308 topotype3