Nutrient, chlorophyll, oxygen, and others taken by CTD water samples from the USCGC Healy, cruise HE1702, in the Bering and Chukchi Seas from 2017-08-26 to 2017-09-15 (NCEI Accession 0231437)
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title: Nutrient, chlorophyll, oxygen, and others taken by CTD water samples from the USCGC Healy, cruise HE1702, in the Bering and Chukchi Seas from 2017-08-26 to 2017-09-15 (NCEI Accession 0231437)
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abstract: This dataset contains nutrient, chlorophyll, oxygen, and others taken by CTD water samples from the USCGC Healy, cruise HE1702, in the Bering and Chukchi Seas, and the Arctic Ocean. Discrete water samples from 141 CTD casts were collected in the Chukchi Sea from US Coast Guard Cutter Healy (HE1702, August 26 to September 15, 2017) as part of the 2017 Distributed Biological Observatory – Northern Chukchi Integrated Study (DBO-NCIS). The goal of DBO-NCIS was to document and understand ongoing changes to the Pacific-Arctic ecosystem in light of the changing physical drivers. Sampling and transects on this research cruise were along standard DBO lines in areas 1, 3, 4 and 5. Nutrients and chlorophyll samples were collected at all process stations in support of benthic studies and net tows. A total of 410 nutrient samples were collected, filtered, and stored frozen at -80 degrees C. They were processed post-cruise at the Pacific Marine Environmental Laboratory (PMEL) for determination of nitrate, nitrite, ammonium, silicate and phosphate concentrations. Total chlorophyll was collected at 71 stations at standard depths of surface, 10 m, 20 m, 30 m, 40 m, and 50 m or bottom depth when stations were shallower than any standard depth. Samples were filtered through GF/F glass fiber filters under low vacuum, and the filters were stored frozen at -80 degrees C. Samples were analyzed at NOAA/PMEL. For calibration of the CTD oxygen probe, 48 samples were samples collected for dissolved oxygen. See data type descriptions for more processing details. Data have been submitted in csv format with a 1-line header defining columns. Related profile data from CTD instruments were processed and are available at WHOI.
purpose: Data were collected as part of the 2017 Distributed Biological Observatory – Northern Chukchi Integrated Study (DBO-NCIS). The goal of DBO-NCIS was to document and understand ongoing changes to the Pacific-Arctic ecosystem in light of the changing physical drivers. The main objectives for the 2017 cruise were (1) to occupy DBO lines 3-5 in the Chukchi Sea with an extensive suite of water column and benthic measurements; and (2) to carry out a process study of the northeastern Chukchi shelf designed to understand the physical-biological links that result in the biological hot spots in this region.
credit: Related Funding Agency: US DOC; NOAA; OAR; Pacific Marine Environmental Laboratory
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description: Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 18. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords
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otherConstraints: Cite as: Mordy, Calvin W.; Stabeno, Phyllis J. (2021). Nutrient, chlorophyll, oxygen, and others taken by CTD water samples from the USCGC Healy, cruise HE1702, in the Bering and Chukchi Seas from 2017-08-26 to 2017-09-15 (NCEI Accession 0231437). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/s1z2-gt63. Accessed [date].
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title: Distributed Biological Observatory - Northern Chukchi Integrated Study
date: (CI_Date)
date: 2023
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linkage: https://www2.whoi.edu/site/dboncis/
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name: https://www2.whoi.edu/site/dboncis/
description: Source DBO-NCIS data at WHOI
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title: Distributed Biological Observatory – Northern Chukchi Integrated Study: Healy 1702 Cruise Report
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date: 2017
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linkage: https://www.pmel.noaa.gov/foci/operations/2017/HLY1702_cruise_report.pdf
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name: https://www.pmel.noaa.gov/foci/operations/2017/HLY1702_cruise_report.pdf
description: related document
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LanguageCode: eng; USA
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beginPosition: 2017-08-28
endPosition: 2017-09-09
supplementalInformation: Submission Package ID: T82P2G
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distributorContact: (CI_ResponsibleParty)
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Anchor: https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/1730 NOAA National Centers for Environmental Information
contactInfo: (CI_Contact)
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linkage: https://doi.org/10.25921/s1z2-gt63
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linkage: https://www.ncei.noaa.gov/archive/accession/oas/231437
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linkage: https://www.ncei.noaa.gov/archive/accession/download/231437
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linkage: ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0177/0231437/
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description: NCEI Accession 0231437 v1.1 was published.
dateTime:
DateTime: 2021-05-03T12:46:18Z
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name: NCEI Accession 0231437 v1.1
description: published 2021-05-03T12:46:18Z
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dataQualityInfo: (DQ_DataQuality)
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description: Parameter or Variable: Dissolved Oxygen Concentration (measured); Units: micromole/liter; Observation Category: in situ; Sampling Instrument: Niskin bottle; Sampling and Analyzing Method: Water samples were collected from Niskin bottles mounted on a CTD rosette. At each CTD location, Niskin bottles were fired at desired depths on the upcast to collect water samples to measure dissolved oxygen concentration for oxygen sensor calibration. The samples were fixed with Winkler reagents, and the flare of each oxygen flask was filled with distilled water and sealed. Samples were processed using technique defined by C. Langdon in “Determination of dissolved oxygen in seawater by Winkler titration using the amperometric technique”, an article within the GO-SHIP Repeat Hydrography Manual (Hood, E.M., Sabine, C.L. and Sloyan, B.M. (eds) (2010) The GO-SHIP Repeat Hydrography Manual: a collection of expert reports and guidelines, Version 1. (IOCCP Report 14, ICPO Publication Series134, http://hdl.handle.net/11329/352). Oxygen calibration water samples are contained in this data set. Related oxygen profile data from the research cruise were processed by R. Pickart’s group at WHOI. (data and information https://web.whoi.edu/healy-2017/ctd-survey/ and DBO3 data at doi:10.18739/A29W09033).; Data Quality Method: Data were visually reviewed for reasonableness and spurious measurements. These data were used to calibrate CTD profile data..
processStep: (LE_ProcessStep)
description: Parameter or Variable: CHLOROPHYLL A CONCENTRATION (measured); Units: microgram/liter; Observation Category: in situ; Sampling Instrument: Niskin bottle; Sampling and Analyzing Method: Water samples were collected from Niskin bottles mounted on a CTD rosette. At each CTD location, Niskin bottles were fired at desired depths on the upcast to collect water. Samples were collected at similar depths as nutrients towards estimation of total chlorophyll a and phaeopigments. Sample water was filtered through Whatman GF/F filters (nominal pore size 0.7 mm). Filters were stored frozen (-80 C) and shipped back to the lab at PMEL and analyzed with a Turner Designs (Trilogy) benchtop fluorometer using the chlorophyll a acidification module, and following standard methods (acidification technique, Parsons, T.R., Maita, Y., Lalli, C.M., 1984. A Manual of Chemical and Biological Methods for Seawater Analysis. Pergamon Press, Oxford, England p.173.); Data Quality Method: Data were visually reviewed for reasonableness and spurious measurements..
processStep: (LE_ProcessStep)
description: Parameter or Variable: PHAEOPIGMENT CONCENTRATION (measured); Units: microgram/liter; Observation Category: in situ; Sampling Instrument: Niskin bottle; Sampling and Analyzing Method: Water samples were collected from Niskin bottles mounted on a CTD rosette. At each CTD location, Niskin bottles were fired at desired depths on the upcast to collect water. Samples were collected at similar depths as nutrients towards estimation of total chlorophyll a and phaeopigments. Sample water was filtered through Whatman GF/F filters (nominal pore size 0.7 mm). Filters were stored frozen (-80 C) and shipped back to the lab at PMEL and analyzed with a Turner Designs (Trilogy) benchtop fluorometer using the chlorophyll a acidification module, and following standard methods (acidification technique, Parsons, T.R., Maita, Y., Lalli, C.M., 1984. A Manual of Chemical and Biological Methods for Seawater Analysis. Pergamon Press, Oxford, England p.173.); Data Quality Method: Data were visually reviewed for reasonableness and spurious measurements..
processStep: (LE_ProcessStep)
description: Parameter or Variable: phosphate concentration (measured); Units: micromole/liter; Observation Category: in situ; Sampling Instrument: Niskin bottle; Sampling and Analyzing Method: Nutrient water samples were collected from Niskin bottles mounted on a CTD rosette. At each CTD location, Niskin bottles were fired at desired depths on the upcast to collect water. Samples were collected in 50 ml high-density polyethylene bottles that were rinsed first with 10% HCl prior to each station, and rinsed at least three times with Niskin sea water before filling. Some samples were refrigerated for 3-12 hours prior to analysis, and some frozen for later analysis. Nutrient samples were analyzed according to the methods of Gordon, et al with resultant values for nitrate, nitrite, silicate, phosphate, ammonium and dissolved inorganic nitrogen (nitrate + nitrite + ammonium) concentrations. Reference: Gordon, L.I., Jennings, J.C., Jr., Ros, A.A. and Krest, J.M., 1993. A suggested protocol for continuous flow automated analysis of seawater nutrients (Phosphate, nitrate, nitrite and silicic acid) in the WOCE Hydrographic Program and the Joint Global Ocean fluxes Study. WOCE Operations Manual, Part 3.1.3 "WHP Operations and Methods" (WOCE Hydrographic Program Office, Methods Manual 91-1) Bundesamt für Seeschiffahrt und Hydrographie, Postfach 30 12 20, 2000 Hamburg 36 Germany. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.471.1497&rep=rep1&type=pdf; Data Quality Method: Data were visually reviewed for reasonableness and spurious measurements..
processStep: (LE_ProcessStep)
description: Parameter or Variable: Silicate concentration (measured); Units: micromole/liter; Observation Category: in situ; Sampling Instrument: Niskin bottle; Sampling and Analyzing Method: Nutrient water samples were collected from Niskin bottles mounted on a CTD rosette. At each CTD location, Niskin bottles were fired at desired depths on the upcast to collect water. Samples were collected in 50 ml high-density polyethylene bottles that were rinsed first with 10% HCl prior to each station, and rinsed at least three times with Niskin sea water before filling. Some samples were refrigerated for 3-12 hours prior to analysis, and some frozen for later analysis. Nutrient samples were analyzed according to the methods of Gordon, et al with resultant values for nitrate, nitrite, silicate, phosphate, ammonium and dissolved inorganic nitrogen (nitrate + nitrite + ammonium) concentrations. Reference: Gordon, L.I., Jennings, J.C., Jr., Ros, A.A. and Krest, J.M., 1993. A suggested protocol for continuous flow automated analysis of seawater nutrients (Phosphate, nitrate, nitrite and silicic acid) in the WOCE Hydrographic Program and the Joint Global Ocean fluxes Study. WOCE Operations Manual, Part 3.1.3 "WHP Operations and Methods" (WOCE Hydrographic Program Office, Methods Manual 91-1) Bundesamt für Seeschiffahrt und Hydrographie, Postfach 30 12 20, 2000 Hamburg 36 Germany. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.471.1497&rep=rep1&type=pdf; Data Quality Method: Data were visually reviewed for reasonableness and spurious measurements..
processStep: (LE_ProcessStep)
description: Parameter or Variable: nitrate concentration (measured); Units: micromole/liter; Observation Category: in situ; Sampling Instrument: Niskin bottle; Sampling and Analyzing Method: Nutrient water samples were collected from Niskin bottles mounted on a CTD rosette. At each CTD location, Niskin bottles were fired at desired depths on the upcast to collect water. Samples were collected in 50 ml high-density polyethylene bottles that were rinsed first with 10% HCl prior to each station, and rinsed at least three times with Niskin sea water before filling. Some samples were refrigerated for 3-12 hours prior to analysis, and some frozen for later analysis. Nutrient samples were analyzed according to the methods of Gordon, et al with resultant values for nitrate, nitrite, silicate, phosphate, ammonium and dissolved inorganic nitrogen (nitrate + nitrite + ammonium) concentrations. Reference: Gordon, L.I., Jennings, J.C., Jr., Ros, A.A. and Krest, J.M., 1993. A suggested protocol for continuous flow automated analysis of seawater nutrients (Phosphate, nitrate, nitrite and silicic acid) in the WOCE Hydrographic Program and the Joint Global Ocean fluxes Study. WOCE Operations Manual, Part 3.1.3 "WHP Operations and Methods" (WOCE Hydrographic Program Office, Methods Manual 91-1) Bundesamt für Seeschiffahrt und Hydrographie, Postfach 30 12 20, 2000 Hamburg 36 Germany. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.471.1497&rep=rep1&type=pdf; Data Quality Method: Data were visually reviewed for reasonableness and spurious measurements..
processStep: (LE_ProcessStep)
description: Parameter or Variable: Nitrite concentration (measured); Units: micromole/liter; Observation Category: in situ; Sampling Instrument: Niskin bottle; Sampling and Analyzing Method: Nutrient water samples were collected from Niskin bottles mounted on a CTD rosette. At each CTD location, Niskin bottles were fired at desired depths on the upcast to collect water. Samples were collected in 50 ml high-density polyethylene bottles that were rinsed first with 10% HCl prior to each station, and rinsed at least three times with Niskin sea water before filling. Some samples were refrigerated for 3-12 hours prior to analysis, and some frozen for later analysis. Nutrient samples were analyzed according to the methods of Gordon, et al with resultant values for nitrate, nitrite, silicate, phosphate, ammonium and dissolved inorganic nitrogen (nitrate + nitrite + ammonium) concentrations. Reference: Gordon, L.I., Jennings, J.C., Jr., Ros, A.A. and Krest, J.M., 1993. A suggested protocol for continuous flow automated analysis of seawater nutrients (Phosphate, nitrate, nitrite and silicic acid) in the WOCE Hydrographic Program and the Joint Global Ocean fluxes Study. WOCE Operations Manual, Part 3.1.3 "WHP Operations and Methods" (WOCE Hydrographic Program Office, Methods Manual 91-1) Bundesamt für Seeschiffahrt und Hydrographie, Postfach 30 12 20, 2000 Hamburg 36 Germany. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.471.1497&rep=rep1&type=pdf; Data Quality Method: Data were visually reviewed for reasonableness and spurious measurements..
processStep: (LE_ProcessStep)
description: Parameter or Variable: Ammonium concentration (measured); Units: micromole/liter; Observation Category: in situ; Sampling Instrument: Niskin bottle; Sampling and Analyzing Method: Nutrient water samples were collected from Niskin bottles mounted on a CTD rosette. At each CTD location, Niskin bottles were fired at desired depths on the upcast to collect water. Samples were collected in 50 ml high-density polyethylene bottles that were rinsed first with 10% HCl prior to each station, and rinsed at least three times with Niskin sea water before filling. Some samples were refrigerated for 3-12 hours prior to analysis, and some frozen for later analysis. Nutrient samples were analyzed according to the methods of Gordon, et al with resultant values for nitrate, nitrite, silicate, phosphate, ammonium and dissolved inorganic nitrogen (nitrate + nitrite + ammonium) concentrations. Reference: Gordon, L.I., Jennings, J.C., Jr., Ros, A.A. and Krest, J.M., 1993. A suggested protocol for continuous flow automated analysis of seawater nutrients (Phosphate, nitrate, nitrite and silicic acid) in the WOCE Hydrographic Program and the Joint Global Ocean fluxes Study. WOCE Operations Manual, Part 3.1.3 "WHP Operations and Methods" (WOCE Hydrographic Program Office, Methods Manual 91-1) Bundesamt für Seeschiffahrt und Hydrographie, Postfach 30 12 20, 2000 Hamburg 36 Germany. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.471.1497&rep=rep1&type=pdf; Data Quality Method: Data were visually reviewed for reasonableness and spurious measurements..
processStep: (LE_ProcessStep)
description: Parameter or Variable: dissolved inorganic nitrogen (measured); Units: micromole/liter; Observation Category: in situ; Sampling Instrument: Niskin bottle; Sampling and Analyzing Method: Nutrient water samples were collected from Niskin bottles mounted on a CTD rosette. At each CTD location, Niskin bottles were fired at desired depths on the upcast to collect water. Samples were collected in 50 ml high-density polyethylene bottles that were rinsed first with 10% HCl prior to each station, and rinsed at least three times with Niskin sea water before filling. Some samples were refrigerated for 3-12 hours prior to analysis, and some frozen for later analysis. Nutrient samples were analyzed according to the methods of Gordon, et al with resultant values for nitrate, nitrite, silicate, phosphate, ammonium and dissolved inorganic nitrogen (nitrate + nitrite + ammonium) concentrations. Reference: Gordon, L.I., Jennings, J.C., Jr., Ros, A.A. and Krest, J.M., 1993. A suggested protocol for continuous flow automated analysis of seawater nutrients (Phosphate, nitrate, nitrite and silicic acid) in the WOCE Hydrographic Program and the Joint Global Ocean fluxes Study. WOCE Operations Manual, Part 3.1.3 "WHP Operations and Methods" (WOCE Hydrographic Program Office, Methods Manual 91-1) Bundesamt für Seeschiffahrt und Hydrographie, Postfach 30 12 20, 2000 Hamburg 36 Germany. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.471.1497&rep=rep1&type=pdf; Data Quality Method: Data were visually reviewed for reasonableness and spurious measurements..
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maintenanceAndUpdateFrequency: (MD_MaintenanceFrequencyCode) asNeeded
maintenanceNote: Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness.
contact: (CI_ResponsibleParty)
organisationName: NOAA National Centers for Environmental Information
role: (CI_RoleCode) custodian
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acquisitionInformation: (MI_AcquisitionInformation)
instrument: (MI_Instrument)
identifier: (MD_Identifier)
code: CTD
type: CTD
description: Conductivity-Temperature-Depth probe
instrument: (MI_Instrument)
identifier: (MD_Identifier)
code: laboratory analysis
type: laboratory analysis
description: use as an observation type
instrument: (MI_Instrument)
identifier: (MD_Identifier)
code: Niskin bottle
type: Niskin bottle
description: Device for obtaining samples of seawater at a specific depth Why special entry for Niskin bottle but no entry for Nansen bottle?
platform: (MI_Platform)
identifier: (MD_Identifier)
code: USCGC Healy
description: There are two US platforms named HEALY: - 33HQ is the identifier for the USCGC HEALY (operational 1999 to present) - 32H1 is the identifier for USS HEALY (operational 1943-1958). Updated information confirmed in ICES database by NOAA on 21 Jan 2011. PLEASE NOTE: This platform ID (33HQ) *is* the USCGC HEALY that was launched on November 15, 1997. Updated information confirmed in ICES database by NOAA on 21 Jan 2011. Title: USCGC Pennant: WAGB-20 Flag: United States of America Vessel Type: Icebreaker DOB: Nov 1999 IMO: 9083380 The HEALY's home page URL is http://www.uscg.mil/pacarea/healy.
instrument: (missing)
