The Ocean Archive System searches our original datasets as they were submitted to us, not individual points or profiles. If you want to search and retrieve ocean profiles in a common format, or objectively analyzed fields, your better option may be to use one of our project applications. See: Access Data
OAS accession Detail for 0278677
| << previous | |revision: 1 |
| accessions_id: | 0278677 | archive |
|---|---|
| Title: | Size fractionated Particulate Carbon Flux 100-500m measured by autonomous Carbon Flux Explorers deployed during the CCE-LTER process study (P1706) between June 2 and July 1, 2017 in the California Current Regime (NCEI Accession 0278677) |
| Abstract: | This dataset contains optical and physical data collected on R/V Roger Revelle during cruise RR1710 in the North Pacific Ocean from 2017-06-02 to 2017-07-01. These data include beam attenuation, salinity calculated from CTD primary sensors, and water pressure. The instruments used to collect these data include Carbon Flux Explorer. These data were collected by James K.B. Bishop of University of California-Berkeley as part of the "California Current Ecosystem Long Term Ecological Research site (CCE LTER)", "Carbon Flux Explorer Development (C-SNOW Development)", and "Carbon Sedimentation In the Ocean Watercolumn (C-SNOW): Calibration (C-SNOW)" projects and "Long Term Ecological Research network (LTER)" and "Ocean Carbon and Biogeochemistry (OCB)" programs. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2020-09-29. The following is the text of the dataset description provided by BCO-DMO: Dataset Description: Size fractionated Particulate Carbon Flux 100-500m measured by autonomous Carbon Flux Explorers deployed from R/V Roger Revelle (RR1701), CCE-LTER process study (P1706), between June 2 and July 1, 2017 in the California Current Regime. These data will be submitted with the following manuscript: Hannah L. Bourne, James K. B. Bishop, Elizabeth J. Connors, Todd J. Wood. Carbon Export and Fate Beneath a Dynamic Upwelled Filament off the California Coast. |
| Date received: | 20200929 |
| Start date: | 20170602 |
| End date: | 20170701 |
| Seanames: | North Pacific Ocean |
| West boundary: | -123.148 |
| East boundary: | -121.128 |
| North boundary: | 35.074 |
| South boundary: | 34.073 |
| Observation types: | optical, physical |
| Instrument types: | |
| Datatypes: | BEAM ATTENUATION COEFFICIENT, HYDROSTATIC PRESSURE, SALINITY |
| Submitter: | |
| Submitting institution: | Biological and Chemical Oceanography Data Management Office |
| Collecting institutions: | University of California - Berkeley |
| Contributing projects: | LTER |
| Platforms: | Roger Revelle (33RR) |
| Number of observations: | |
| Supplementary information: | Acquisition Description: To understand the vertical variations of carbon fluxes in biologically productive waters, four autonomous Carbon Flux Explorers (CFEs) and ship-lowered CTD-interfaced particle-sensitive transmissometer and scattering sensors were deployed in a filament of offshore flowing recently upwelled water during the June 2017 California Current Ecosystem – Long Term Ecological Research process study. The Lagrangian CFEs operating at depths from 100-500 m yielded carbon flux and its partitioning with size from 30 µm –1 cm at three intense study locations within the filament and at a location outside the filament. The Carbon Flux Explorer (CFE) dives below the surface make particle flux observations at target depths as it drifts with currents. The Optical Sedimentation Recorder (OSR) wakes once the CFE has reached the target depth. On first wake-up of a given CFE dive, the sample stage is flushed with water and images of the particle-free stage are obtained. Particles settle through a 1-cm opening hexagonal celled light baffle into a high-aspect ratio funnel assembly before landing on a 2.54 cm diameter glass sample stage. At 25-minute intervals, particles are imaged at 13 µm pixel resolution in three lighting modes: dark field, transmitted and transmitted-cross polarized. Sampling procedures described in Bourne et al., 2019 and Bishop et al., 2016. Different particle classes (anchovy pellets, copepod pellets and >1000 µm aggregates) dominated the 100-150 m fluxes during successive stages of the filament evolution as it progressed offshore. Fluxes were very high at all locations in the filament; below 150 m, flux was invariant or increased with depth at the two locations closer to the coast. Martin curve ‘b’ factors for total particulate carbon flux were +0.1, +0.87, -0.27, and -0.39 at the three successively occupied locations within the plume, and in transitional waters, respectively. Particle transfer efficiencies between 100 to 500 m were far greater within both filament and California Current waters than calculated using a classic Martin ‘b’ factor of -0.86. Interestingly, the flux profiles for all particles 90%) of particle flux was carried by >1000 µm sized aggregates. Mechanisms to explain a factor of three flux increase between 150 and 500 m at the mid plume location are investigated. |
| Availability date: | |
| Metadata version: | 1 |
| Keydate: | 2023-05-24 04:37:05+00 |
| Editdate: | 2023-05-24 04:37:55+00 |