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Surface underway measurements of pH, salinity and water temperature during R/V Xue Long CHINARE2018 Expedition (EXPOCODE 76XL20180723) in the Japan Sea, Sea of Okhotsk, North Pacific Ocean, Bering Sea, Chukchi Sea and Arctic Ocean from 2018-07-23 to 2018-09-22 (NCEI Accession 0233453)


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            title:  Surface underway measurements of pH, salinity and water temperature during R/V Xue Long CHINARE2018 Expedition (EXPOCODE 76XL20180723) in the Japan Sea, Sea of Okhotsk, North Pacific Ocean, Bering Sea, Chukchi Sea and Arctic Ocean from 2018-07-23 to 2018-09-22 (NCEI Accession 0233453)
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                  Anchor:  DOI 10.25921/xv5b-r238
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/person/details/5453 Di Qi
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        abstract:  This dataset includes surface underway measurements of pH, salinity and water temperature obtained during R/V Xue Long CHINARE2018 Expedition (EXPOCODE 76XL20180723) Japan Sea, Sea of Okhotsk, North Pacific Ocean, Bering Sea, Chukchi Sea and Arctic Ocean from 2018-07-23 to 2018-09-22. The instrument used to measure pH data is an advanced spectrophotometric loop flow analyzer for high-precision seawater pH (LFA-pH). The pH data are calibrated with respect to discrete measurements of spectrophotometic pH during the cruise. The descriptions of data quality-control are given in a recently submitted manuscript to Geophysical Research Letters.
        purpose:  The major objectives of this project is to provide a high quality carbon related and other measurements in the North Pacific and Arctic Oceans
        credit:  Funding Information: Ministry of Natural Resources, China
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/datatype/details/257 pH
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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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              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/1ed45273-3e2b-4586-b852-05578c04041b OCEAN > ARCTIC OCEAN
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              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/7e35ea67-a0c9-49fa-97de-e5f8f5b9ee6d OCEAN > ARCTIC OCEAN > CHUKCHI SEA
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              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/5488b1cc-08b2-41cf-9bd2-4a2cdd0990de OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN
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              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/d85ae1ed-4b5f-440d-aaf0-7f9d605fec3b OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > BERING SEA
            keyword:
              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/d52321c6-ccc4-4a4a-bf94-638e57aaed63 OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > SEA OF JAPAN
            keyword:
              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/0a63a576-6ceb-43d7-a606-b7a924881000 OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > SEA OF OKHOTSK
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                title:  Global Change Master Directory (GCMD) Location Keywords
                date:  (CI_Date)
                    date:  2023
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                edition:  18
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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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            keyword:  Arctic Ocean
            keyword:  Bering Sea
            keyword:  Chukchi Sea
            keyword:  Japan Sea
            keyword:  Sea of Okhotsk
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                title:  Provider Geographic Names
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            otherConstraints:  Cite as: Qi, Di; Wu, Yingxu (2021). Surface underway measurements of pH, salinity and water temperature during R/V Xue Long CHINARE2018 Expedition (EXPOCODE 76XL20180723) in the Japan Sea, Sea of Okhotsk, North Pacific Ocean, Bering Sea, Chukchi Sea and Arctic Ocean from 2018-07-23 to 2018-09-22 (NCEI Accession 0233453). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/xv5b-r238. Accessed [date].
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            useLimitation:  Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
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            otherConstraints:  Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
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                title:  Di Qi, Liqi Chen, Zhongyong Gao, Heng Sun, Wei-Jun Cai. Ocean Surface Water Partial Pressure of CO2 database: Measurements Performed during the Ninth Chinese Arctic Research Expedition (CHINARE) (2018). Chinese National Arctic and Antarctic Data Center, 2020. https://doi.org/10.11856/NNS.D.2020.010.v0.
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                    beginPosition:  2018-07-23
                    endPosition:  2018-09-22
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                description:  NCEI Accession 0233453 v1.1 was published.
                dateTime:
                  DateTime:  2021-05-20T22:36:28Z
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                        title:  NCEI Accession 0233453 v1.1
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                                    description:  published 2021-05-20T22:36:28Z
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                description:  Parameter or Variable: Sea water pH on total scale; Abbreviation: pH@SST; Calibrated_pH@SST; Controlled vocabulary name: pH; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ; Measured or calculated: Measured at in-situ sea surface temperature, reported at in-situ sea surface temperature; Sampling instrument: Underway pumping system; Analyzing instrument: Automated pH analyzer based on loop flow analysis (LFA-pH); Uncertainty: 0.001 under laboratory situation, 0.01 under field observations; Method reference: Cao, L., Qi, D., Li, Q., Yang, B., Zhang, Y., Zhang, S., . . . Liu, Y. (2021). Spectrophotometric Loop Flow Analyzer for High-Precision Measurement of Seawater pH. Talanta, 224, 121775. https://doi.org/10.1016/j.talanta.2020.121775; QC steps: Flag '2' means 'acceptable'; Researcher name: Di Qi; Researcher institution: Third Institute of Oceanography, MNR, China.
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                description:  Parameter or Variable: Sea Surface Temperature; Abbreviation: SST_C; Unit: degrees celcius; Observation type: Surface Underway.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Sea Surface Salinity; Abbreviation: SAL_permil; Observation type: Surface Underway .
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        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
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                code:  salinometer
            type:  salinometer
            description:  generic salinometer use salinometer when the instrument type used is unclear but the data include salinity measurements
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  spectrophotometer
            type:  spectrophotometer
            description:  spectrophotometer, optical spectrometer, spectrograph or spectroscope An optical spectrometer (spectrophotometer, spectrograph or spectroscope) is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify materials. Butler, L. R. P.; Laqua, K. (1995). "Nomenclature, symbols, units and their usage in spectrochemical analysis-IX. Instrumentation for the spectral dispersion and isolation of optical radiation (IUPAC Recommendations 1995)". Pure Appl. Chem. IUPAC. 67 (10): 1725–1744. doi:10.1351/pac199567101725. A spectrometer is the general term for describing a combination of spectral apparatus with one or more detectors to measure the intensity of one or more spectral bands."
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                code:  temperature sensor
            type:  temperature sensor
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                code:  XUE LONG
            description:  R/V icebreaker, IMO 8877899, Owner: Polar Research Institute of China, Overall length (meters): 167.0(m) https://en.pric.org.cn/index.php?c=category&id=90 Additional equipment: Dolphin helicopter Overall length (meters): 11.44 Registration no.: B-7102 Call sign: 7102
            instrument: (missing)