This dataset contains water temperature, salinity, oxygen, currents and other data taken by CTD, Niskin bottles, and ADCP from the research vessel Ryofu Maru, cruise RF17-02, in the north Pacific. The entire cruise was carried out during the period from February to March, 2017. Hydrographic observation was made using a Sea-Bird Electronics (SBE) 36 position carousel equipped with 10-liter Niskin water sample bottles, a CTD system (SBE911plus) equipped with JFE Advantech oxygen sensor (RINKO III) along 165E. Water samples were analyzed for salinity, dissolved oxygen, nutrients, pH and phytopigment (chlorophyll-a and phaeopigments). Current data was measured by Teledyne RDI's vessel-mounted ADCP system (38kHz Ocean Surveyor). This dataset is U.S. State Department MSR U2016-031 as part of the World Data Service for Oceanography. Data are in PDF.

This dataset contains water temperature, salinity, oxygen, currents and other data taken by CTD, Niskin bottles, and ADCP from the research vessel Ryofu Maru, cruise RF18-06, in the north Pacific. The entire cruise was carried out during the period from August to September, 2018. Hydrographic observation was made using a Sea-Bird Electronics (SBE) 36 position carousel equipped with 10-liter Niskin water sample bottles, a CTD system (SBE911plus) equipped with JFE Advantech oxygen sensor (RINKO III) along 165E. Water samples were analyzed for salinity, dissolved oxygen, nutrients, pH and phytopigment (chlorophyll-a and phaeopigments). Current data was measured by Teledyne RDI's vessel-mounted ADCP system (38kHz Ocean Surveyor). Floating tar balls were sampled by ship-towing Neuston net. Measurement data from this cruise are available in computer readable format from NCEI accession 0175298 and from the World Ocean Database (cruise JP044322). See Documentation section on the dataset landing page. This dataset is U.S. State Department MSR U2018-008 as part of the World Data Service for Oceanography. Data are in PDF.

This dataset contains water temperature, salinity, oxygen, currents and other data taken by CTD, Niskin bottles, and ADCP from the research vessel Ryofu Maru, cruise RF13-01, in the North Pacific Ocean. The entire cruise was carried out during the period from January to March, 2013. Hydrographic observation was made using a Sea-Bird Electronics (SBE) 36 position carousel equipped with 10-liter Niskin water sample bottles, a CTD system (SBE911plus) equipped with JFE Advantech oxygen sensor (RINKO III) along 149E. Water samples were analyzed for salinity, dissolved oxygen and nutrients. Current data was measured by Teledyne RDI's vessel-mounted ADCP system (38kHz Ocean Surveyor). This dataset is U.S. State Department MSR U2012-018 as part of the World Data Service for Oceanography. Data are in PDF.

This dataset contains water temperature, salinity, oxygen, currents and other data taken by CTD, Niskin bottles, and ADCP from the research vessel Ryofu Maru, RF13-07, in the North Pacific Ocean. The entire cruise was carried out during the period from July to September, 2013. Hydrographic observation was made using a SeaBird Electronics (SBE) 36 position carousel equipped with 10-liter Niskin water sample bottles, a CTD system (SBE911plus) equipped with JFE Advantech oxygen sensor (RINKO III) along 179E. Water samples were analyzed for salinity, dissolved oxygen, nutrients, pH and phytopigment (chlorophyll-a and phaeopigments). Current data was measured by Teledyne RDI's vessel-mounted ADCP system (38kHz Ocean Surveyor). This dataset is U.S. State Department MSR U2013-006 as part of the World Data Service for Oceanography. Data are in PDF.

This dataset contains water temperature, salinity, oxygen, currents and other data taken by CTD, Niskin bottles, and ADCP from the research vessel Ryofu Maru, RF14-01, in the North Pacific Ocean. The entire cruise was carried out during the period from January to March, 2014. Hydrographic observation was made using a SeaBird Electronics (SBE) 36 position carousel equipped with 10-liter Niskin water sample bottles, a CTD system (SBE911plus) equipped with JFE Advantech oxygen sensor (RINKO III) along 149E. Water samples were analyzed for salinity, dissolved oxygen and nutrients. Current data was measured by Teledyne RDI's vessel-mounted ADCP system (38kHz Ocean Surveyor). This dataset is U.S. State Department MSR U2013-030 as part of the World Data Service for Oceanography. Data are in PDF.

This dataset contains water temperature, salinity, oxygen, currents and others chemical and biological parameters taken by CTD, Niskin bottles, and ADCP from the research vessel Ryofu Maru, cruise 11-08, in the North Pacific Ocean. Cruise RF11-08 was carried out during the period from July to September, 2011. Hydrographic observation was made using a Sea-Bird Electronics (SBE) 36 position carousel equipped with 10-liter Niskin water sample bottles, a CTD system (SBE911plus) equipped with JFE Advantech oxygen sensor (RINKO III) along longitude 165 degree East. Water samples were analyzed for salinity, dissolved oxygen, nutrients, pH and phytopigment (chlorophyll-a and phaeopigments. Currents were measured by ship-mounting Acoustic Doppler Current Profiler. These data are part of the World Data Service and US State Department Marine Research Data U2011-004. Data are in PDF.

This dataset contains water temperature, salinity, oxygen, currents and other chemical and biological parameters taken by CTD, Niskin bottles, and ADCP from the research vessel Ryofu Maru, cruise RF12-01, on 2012-02-10. The cruise was carried out during the period from January to February, 2012. Hydrographic observation was made using a Sea-Bird Electronics (SBE) 36 position carousel equipped with 10-liter Niskin water sample bottles, a CTD system (SBE911plus) equipped with JFE Advantech oxygen sensor (RINKO III) along 149 degree East. Water samples were analyzed for salinity, dissolved oxygen and nutrients. Current data was measured by Teledyne RDI's vessel-mounted ADCP system (38kHz Ocean Surveyor). This dataset is U.S. State Department MSR U2011-021 as part of the World Data Service for Oceanography. Data are in PDF.

This dataset contains water temperature, salinity, oxygen, currents and other data taken by CTD, Niskin bottles, and ADCP from the research vessel Keifu Maru, cruise KS18-02, in the north Pacific. The entire cruise was carried out during the period from January to March, 2018. Hydrographic observation was made using a Sea-Bird Electronics (SBE) 36 position carousel equipped with 10-liter Niskin water sample bottles, a CTD system (SBE911plus) equipped with JFE Advantech oxygen sensor (RINKO III) along 165E. Water samples were analyzed for salinity, dissolved oxygen, nutrients, pH and phytopigment (chlorophyll-a and phaeopigments). Current data was measured by Teledyne RDI's vessel-mounted ADCP system (38kHz Ocean Surveyor). This dataset is U.S. State Department MSR U2017-024 as part of the World Data Service for Oceanography. Data are in PDF.

This dataset contains water temperature, salinity, oxygen, currents and other data taken by CTD, Niskin bottles, and ADCP from the research vessel Keifu Maru, cruise KS20-02, in the north Pacific. The entire cruise was carried out during the period from January to March, 2020. Hydrographic observation was made using a Sea-Bird Electronics (SBE) 36 position carousel equipped with 10-liter Niskin water sample bottles, a CTD system (SBE911plus) equipped with JFE Advantech oxygen sensor (RINKO III) along 165E. Water samples were analyzed for salinity, dissolved oxygen, nutrients, pH and phytopigment (chlorophyll-a and phaeopigments). Current data was measured by Teledyne RDI's vessel-mounted ADCP system (38kHz Ocean Surveyor). This dataset is U.S. State Department MSR U2019-026 as part of the World Data Service for Oceanography. Data are in PDF.

This dataset contains water temperature, salinity, oxygen, currents and others taken by CTD, Niskin bottles, and ADCP from the research vessel, cruise RF14-07, in the North Pacific Ocean. The entire cruise was carried out during the period from July to September, 2014. Hydrographic observation was made using a Sea-Bird Electronics (SBE) 36 position carousel equipped with 10-liter Niskin water sample bottles, a CTD system (SBE911plus) equipped with JFE Advantech oxygen sensor (RINKO III) along 149E. Water samples were analyzed for salinity, dissolved oxygen, nutrients, pH and phytopigment (chlorophyll-a and phaeopigments). Current data was measured by Teledyne RDI's vessel-mounted ADCP system (38kHz Ocean Surveyor). This dataset is U.S. State Department MSR U2014-007 as part of the World Data Service for Oceanography Data are in PDF.