gov.noaa.nodc:0233453 eng utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NOAA Contact Information Information for contacts at NCEI. information custodian 2026-03-26T08:01:40Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) 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) 2021-05-20 publication 2021-05-20 creation International DOI Foundation (IDF) 10.25921/xv5b-r238 NOAA National Centers for Environmental Information gov.noaa.nodc:0233453 NCEI Archive Management System 0233453 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information publisher Di Qi State Oceanic Administration, Third Institute of Oceanography qidi@tio.org.cn http://www.tio.org.cn/ HTTP State Oceanic Administration, Third Institute of Oceanography website Institution web page information resourceProvider State Oceanic Administration, Third Institute of Oceanography http://www.tio.org.cn/ HTTP State Oceanic Administration, Third Institute of Oceanography website Institution web page information resourceProvider Di Qi State Oceanic Administration, Third Institute of Oceanography qidi@tio.org.cn http://www.tio.org.cn/ HTTP State Oceanic Administration, Third Institute of Oceanography website Institution web page information principalInvestigator Yingxu Wu State Oceanic Administration, Third Institute of Oceanography http://www.tio.org.cn/ HTTP State Oceanic Administration, Third Institute of Oceanography website Institution web page information principalInvestigator Qi, Di State Oceanic Administration, Third Institute of Oceanography qidi@tio.org.cn http://www.tio.org.cn/ HTTP State Oceanic Administration, Third Institute of Oceanography website Institution web page information author Wu, Yingxu State Oceanic Administration, Third Institute of Oceanography http://www.tio.org.cn/ HTTP State Oceanic Administration, Third Institute of Oceanography website Institution web page information author State Oceanic Administration, Third Institute of Oceanography http://www.tio.org.cn/ HTTP State Oceanic Administration, Third Institute of Oceanography website Institution web page information contributor tableDigital 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. The major objectives of this project is to provide a high quality carbon related and other measurements in the North Pacific and Arctic Oceans Funding Information: Ministry of Natural Resources, China completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information pointOfContact asNeeded https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0233453 Preview graphic PNG 0233453 NCEI ACCESSION NUMBER 2021-05-13 publication pH SALINITY - SURFACE WATER WATER TEMPERATURE theme NODC DATA TYPES THESAURUS salinometer spectrophotometer temperature sensor instrument NODC INSTRUMENT TYPES THESAURUS chemical physical surface underway theme NODC OBSERVATION TYPES THESAURUS XUE LONG platform NODC PLATFORM NAMES THESAURUS State Oceanic Administration, Third Institute of Oceanography dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS State Oceanic Administration, Third Institute of Oceanography dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS Ship of Opportunity Programme (SOOP) project NODC PROJECT NAMES THESAURUS Arctic Ocean Bering Sea Chukchi Sea Japan Sea North Pacific Ocean Sea of Okhotsk place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication CHINARE2018 project Cruise ID 76XL20180723 project EXPOCODE Ocean Carbon and Acidification Data System (OCADS) Project project Ocean Acidification Search Keywords Arctic project Reference Section ID CHINARE2018 project Research Projects EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > SURFACE SALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. 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 information custodian Surface underway theme OCADS Study Type SAL_permil SST_C pH@SST; Calibrated_pH@SST theme Provider Variable Abbreviations OPTSPEC > Optical Spectrometer SALINOMETERS TEMPERATURE SENSORS > TEMPERATURE SENSORS instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. 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 information custodian Ships platform Global Change Master Directory (GCMD) Platform Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. 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 information custodian OCEAN > ARCTIC OCEAN OCEAN > ARCTIC OCEAN > CHUKCHI SEA OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > BERING SEA OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > SEA OF JAPAN OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > SEA OF OKHOTSK place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. 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 information custodian Arctic Ocean Bering Sea Chukchi Sea Japan Sea Sea of Okhotsk place Provider Geographic Names accessLevel: public otherRestrictions 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]. 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. otherRestrictions 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. 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. 2018 publication International DOI Foundation (IDF) https://doi.org/10.11856/nns.d.2020.010.v0 https://doi.org/10.11856/nns.d.2020.010.v0 HTTPS https://doi.org/10.11856/nns.d.2020.010.v0 Related resource information crossReference project R/V Xue Long Expeditions Underway Data 2022 publication https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/VOS_Program/Xuelong.html HTTPS https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/VOS_Program/Xuelong.html Related resource information NOAA National Centers for Environmental Information (NCEI) publisher documentDigital crossReference project NOAA National Centers for Environmental Information (2022). Ocean Carbon and Acidification Data System (OCADS). NOAA National Centers for Environmental Information. https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system 2022-04 publication https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system HTTPS https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system OCADS website information NOAA National Centers for Environmental Information author NOAA National Centers for Environmental Information (NCEI) publisher documentDigital [accessed 2024-02-08] crossReference program eng; USA utf8 environment oceans 130.982 -150.168 35.442 84.72 2018-07-23 2018-09-22 NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. Originator data format 0.628 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0233453.html HTTPS Web browser Project Metadata Navigate directly to the URL for a descriptive web page with download links. information https://doi.org/10.25921/xv5b-r238 HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/oas/233453 HTTPS Web browser Descriptive Information Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/download/233453 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0178/0233453/ FTP Any FTP client FTP These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). download dataset NCEI Accession 0233453 v1.1 was published. 2021-05-20T22:36:28Z NCEI Accession 0233453 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0233453/1.1 HTTPS NCEI Accession 0233453 v1.1 published 2021-05-20T22:36:28Z download dataset 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 observation; 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 Parameter or Variable: Sea Surface Temperature; Abbreviation: SST_C; Unit: degrees celcius; Observation type: Surface Underway Parameter or Variable: Sea Surface Salinity; Abbreviation: SAL_permil; Observation type: Surface Underway asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian salinometer salinometer generic salinometer use salinometer when the instrument type used is unclear but the data include salinity measurements spectrophotometer spectrophotometer 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." temperature sensor temperature sensor A sensor used to measure temperature. XUE LONG 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