This CTD data set, consisting of 70 casts, was collected in the Chukchi Sea ice cruise mb11-01 from the fishing vessel Mystery Bay (August 15 - September 10, 2011). The cruise was funded by DOI Bureau of Ocean Energy Management (BOEM) through the NOAA National Marine Mammal Laboratory. CTD operations on this cruise were managed by Ecosystems and Fisheries-Oceanography Coordinated Investigations (EcoFOCI) personnel from NOAA/PMEL as part of the Department of Interior (DOI)/BOEM Arctic Whale Ecology Study (ARCWEST) and Chukchi Sea Acoustics, Oceanography, and Zooplankton (CHAOZ) programs. Profile data from CTD instruments were processed at NOAA/PMEL/EcoFOCI using standard techniques. Data from bottle samples include phosphate, silicate, nitrate, nitrite, ammonium, and chlorophyll. Chlorophyll data are submitted separately through NOAA/AFSC. Data are on a 1-meter vertical grid and combine both averaged CTD profile data and bottle samples, where missing data are listed as 1e+35. CTD data contact: Phyllis Stabeno, Peggy Sullivan. Nutrient and bottle data contact: Calvin Mordy. Chlorophyll data contact: Jeffrey M. Napp. Data are in CSV format.

This CTD data set, consisting of 70 casts, was collected in the Chukchi Sea ice cruise mb11-01 from the fishing vessel Mystery Bay (August 15 - September 10, 2011). The cruise was funded by DOI Bureau of Ocean Energy Management (BOEM) through the NOAA National Marine Mammal Laboratory. CTD operations on this cruise were managed by Ecosystems and Fisheries-Oceanography Coordinated Investigations (EcoFOCI) personnel from NOAA/PMEL as part of the Department of Interior (DOI)/BOEM Arctic Whale Ecology Study (ARCWEST) and Chukchi Sea Acoustics, Oceanography, and Zooplankton (CHAOZ) programs. Profile data from CTD instruments were processed at NOAA/PMEL/EcoFOCI using standard techniques. Data from bottle samples include phosphate, silicate, nitrate, nitrite, ammonium, and chlorophyll. Chlorophyll data are submitted separately through NOAA/AFSC. Data are on a 1-meter vertical grid and combine both averaged CTD profile data and bottle samples, where missing data are listed as 1e+35. CTD data contact: Phyllis Stabeno, Peggy Sullivan. Nutrient and bottle data contact: Calvin Mordy. Chlorophyll data contact: Jeffrey M. Napp. Data are in CSV format.

This dataset contains water temperature, salinity, phytoplankton, zooplankton, and suspended particulate matter taken by CTD, nets, and other instrumentation in the Bering and Chukchi Seas from the research vessel icebreaker Xue Long during the 5-th Chinese National Arctic Scientific Research Expedition (CHINARE5). The objectives of the CHINARE5 were to improve understanding of basic environmental information of marine hydrology in summer 2012 in areas of the Bering Sea, Chukchi Sea, Chukchi Sea Rise, and to provide basic information for global climate change research. The main work was undertaken through sectional observations of the aforementioned sea areas. Data are in CNV, XLSX formats. This dataset is U.S. State Department MSR U2012-020 as part of the World Data Services for Geophysics and Oceanography.

This dataset contains ocean temperature and salinity profiles from CTD and bottle samples collected aboard the USCGC Healy and R/V Sikuliaq during cruises HLY1301 and SKQ201505s, respectively, in the Bering Sea and Chukchi Sea between 2013-08-03 and 2015-04-03. These data were collected by Christopher R. Paver (NCEI) and Dr. Louis A. Codispoti (UMCES) conducting research on bottle flushing protocol. These data were submitted by Christopher R. Paver.

This CTD and Niskin bottles data set, consisting of 71 casts, was collected in the Chukchi Sea from the F/V Aquila (AQ16-01, September 4 - 29, 2016) within the Arctic Long-Term Integrated Mooring Array (ALTIMA) area. The cruise was funded by NOAA’s Office of Oceanic and Atmospheric Research (OAR), with supplemental funding from the Bureau of Ocean Energy Management (BOEM) through the Arctic Whale Ecology Study (ARCWEST). These data add to long-term datasets begun under several BOEM initiatives (see “Purpose”). CTD operations on this cruise were managed by EcoFOCI personnel from NOAA/PMEL. Profile data from CTD instruments were processed at NOAA/PMEL/EcoFOCI using standard techniques. Data from bottle samples include phosphate, silicate, nitrate, nitrite and ammonium. Profile data are averaged to a 1-meter grid, with missing data listed as NaN. Salinity was calculated (PSS-78), from conductivity and temperature (ITS90). Sigma-t was calculated from primary temperature and salinity. Nutrient samples were analyzed according to the methods of Gordon et al, 1993 and Mantoura, Woodward, 1983 (see references below). 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 sample before filling. Some samples were refrigerated for 3-12 hours prior to analysis, and some frozen for later analysis. CTD data contact: Phyllis Stabeno, Peggy Sullivan, Shaun Bell, Calvin Mordy (nutrients). This cruise was conducted by NOAA/OAR, NMML, AFSC, BOEM, PMEL and EcoFOCI participants. Data are in CSV format. Longitudes are in deg_west.

This dataset contains water temperature, conductivity, and others taken by CTD and Niskin bottles in the Chukchi Sea during the 10 August - 3 September 2015 Arctic Marine Biodiversity Observing Network (AMBON) research cruise. The data provides information on important Arctic Chukchi Sea ecosystem parameters, including temperature, salinity, pressure, and fluorescence as an index of phytoplankton biomass. In aggregate these variables are basic descriptors of the water masses entering the Chukchi Sea from the Pacific through Bering Strait. The compiled directory consists of three files. - AMBON2015_CTDprofiles.ascii (also in csv and netcdf) - AMBON2015.hdr - AMBON2015_ctdBottleData_L2_v1.csv The first file is an ASCII file consisting of Seabird SBE55 CTD measurements from the depths at which the Niskin bottles were tripped; the file is intended to complement the file named 'AMBON 2015 bottle file new- Nutrients_chlorophyll bottle file.csv' in the Arctic Marine Biodiversity Observing Network (AMBON): Water column and benthic processes project (Cooper and Grebmeier). The second file is a ASCII file consisting of Seabird SBE55 Conductivity, Temperature, Depth (CTD) header information (named AMBON2015.hdr); the file accompanies the main CTD data file. The dataset describes each CTD cast number, location, bottom depth and other ancillary information. The third file is a ASCII file consisting of Seabird SBE55 Conductivity, Temperature, Depth (CTD) downcast data (AMBON2015_ctdBottleData_L2_v1.csv). Data were post calibrated and adjusted to bottled samples. Data are in ASCII, CSV, and NetCDF.

This dataset contains water temperature, salinity, currents, marine chemistry, biology, geology, and underway meteorology taken by CTD, LADCP, and other instruments in the Bering and Chukchi Sea from the research vessel Xuelong from 2018-09-04 to 2018-09-09. Data were collected during the CHINARE 2018 Arctic expedition, including work performed in the US EEZ. Data are in text, xls, csv formats. Data report is in pdf. CTD data are in the SeaBird HEX format, processed data are in CNV. ADCP data are in the Teledyne RD Instruments binary format (*.0000), processed data are in NetCDF. This dataset is U.S. State Department MSR U2018-018 as part of the World Data Services for Geophysics and Oceanography.

This dataset contains water temperature, salinity, currents, marine chemistry, biology, geology, and underway meteorology taken by CTD, LADCP, and other instruments in the Bering and Chukchi Sea from the research vessel Xiangyanghong 01 from 2019-08-24 to 2019-09-08. Data were collected during the CHINARE 2019 Arctic expedition, including work performed in the US EEZ. Data are in text, xls, csv formats. Data report is in pdf. CTD data are in the SeaBird HEX format, processed CTD are in CNV format. ADCP data are in the Teledyne RD Instruments binary format (*.0000), processed ADCP are in NetCDF. This dataset is U.S. State Department MSR U2019-020 as part of the World Data Services for Geophysics and Oceanography.

This dataset contains water temperature, salinity, and others taken by CTD, as well as water column chlorophyll, nutrients, and others from Niskin bottle samples collected in the Chukchi Sea during the 2015-08-12 to 2015-09-03 and the 2017-08-06 to 2017-08-22 Arctic Marine Biodiversity Observing Network (AMBON) research cruises aboard the research vessel Norseman II. This dataset consists of two comma-separated values (csv) files (naming convention 'AMBON [YYYY] bottle file new_NutrientChlaDelO18.csv) containing measurements of water samples collected by a Niskin bottle array on a Seabird SBE55 CTD at hydrographic stations in each 2015 and 2017. These data files contain chemistry measurements made on bottle samples, including Chlorophyll a Concentration (micro-g/L), and nutrient concentrations [micro-mol/L] (Ammonia, Phosphate, Nitrite+Nitrate, and Silicate). Water samples were also collected for analysis of 18O/16O ratios. The data files also include physical information, depth, salinity and temperature measurements from the CTD at the location of bottle sample collection. Two source CTD ASCII data files (named AMBON[YYYY]_bottles.all) consisting of measurements from the depths at which the Niskin bottles were tripped are also included in this dataset. The data provides information on important Arctic Chukchi Sea ecosystem parameters, including temperature, salinity, pressure, and fluorescence as an index of phytoplankton biomass. Data are in text and CSV formats.

This CTD and Niskin bottle data set, consisting of 17 casts, was collected in the Chukchi and Bering Seas from the F/V Aquila (cruise AQ15-01, September 8 - 28, 2015). The cruise was funded by DOI Bureau of Ocean Energy Management (BOEM) through the NOAA National Marine Mammal Laboratory. CTD operations on this cruise were managed by EcoFOCI personnel from NOAA/PMEL. Profile data from CTD instruments were processed at NOAA/PMEL/EcoFOCI using standard techniques. Data from bottle samples include phosphate, silicate, nitrate, nitrite and ammonium. Profile data are averaged to a 1-meter grid, with missing data listed as NaN. Salinity was calculated (PSS-78), from conductivity and temperature (ITS90). Sigma-t was calculated from primary (channel 1) temperature and salinity. Nutrient samples were analyzed according to the methods of Gordon et al, 1993 and Mantoura, Woodward, 1983 (see references in metadata). 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 sample before filling. Some samples were refrigerated for 3-12 hours prior to analysis, and some frozen for later analysis. CTD data contact: Phyllis Stabeno, Peggy Sullivan, Shaun Bell, Calvin Mordy (nutrients). Cruise was performed for ARCWEST, CHAOZ-X 2015 Projects by BOEM, NOAA NMML, PMEL and EcoFOCI participants. Data are in CSV format. Longitude is in deg_West.