Dataset: continuous
View Data: Data not available yet
Data Citation:
White, A. E., Quay, P. (2020) Underway/continuous measurements of O2, O2/Ar and optically-based POC in the North Pacific from 2017-09-05 to 2017-09-27. Biological and Chemical Oceanography Data Management Office (BCO-DMO). Version Date 2020-04-09 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/808834 [access date]
Terms of Use
This dataset is licensed under Creative Commons Attribution 4.0.
If you wish to use this dataset, it is highly recommended that you contact the original principal investigators (PI). Should the relevant PI be unavailable, please contact BCO-DMO (info@bco-dmo.org) for additional guidance. For general guidance please see the BCO-DMO Terms of Use document.
Spatial Extent: N:55 E:-145 S:24 W:-160
Temporal Extent: 2017-09-05 - 2017-09-27
Project:
Principal Investigator:
Angelicque E. White (Oregon State University, OSU)
Co-Principal Investigator:
Paul Quay (University of Washington, UW)
BCO-DMO Data Manager:
Mathew Biddle (Woods Hole Oceanographic Institution, WHOI BCO-DMO)
Version:
0
Version Date:
2020-04-09
Restricted:
No
Validated:
No
Current State:
Data not available
Underway/continuous measurements of O2, O2/Ar and optically-based POC in the North Pacific from 2017-09-05 to 2017-09-27
Abstract:
Time series of Winkler calibrated continuous (from uncontaminated seawater intake line located at ~7m depth) dissolved oxygen (Aandera optode), O2/Ar (EIMS) and O2/Ar* (O2/Ar normalized by variations in N2/Ar). The O2/Ar* time series should be the most reliable one since it corrects for additional bubble injections. Data are binned hourly. Time series of continuous (from uncontaminated seawater intake line located at ~7m depth) particulate beam-attenuation coefficients (cp) calibrated to particulate organic carbon (POC) concentrations. Data are binned hourly. The cruise (KM1713) transited from Seward, AK to Honolulu, HI from 3-26 September 2017 onboard the R/V Kilo Moana. Six extended stations (Stn), three in subpolar waters (Stn 1 at 55°N, Stn 2 at 50°N, and Stn 3 at 46°N), one in the transition zone between subpolar and subtropical waters (Stn 4 at 42°N), and two in the subtropical gyre (Stn 5 at 34°N, and Stn 6 at 24°N) were occupied for 2-3 day periods during which continuous measurements of conductivity, temperature, O2, O2/Ar and beam attenuation were measured continuously on surface seawater supplied via the ships’ intake line and using CTD profiles of conductivity, temperature, pressure, oxygen, and the particulate beam attenuation coefficient conducted at ~2-hr intervals. An autonomous profiling float was deployed for ~ 2 days at four stations, retrieving CTD and oxygen profiles at approximately 3-hour intervals. Another float with same mission design was deployed near station ALOHA (22.45° N, 158° W) during July 2017 to provide mixed-layer averaged O2 near station 6. When available, the ship followed the trajectory of the profiling float, yielding a near-Lagrangian sampling strategy with the aim to minimize horizontal mixing effects.