| Contributors | Affiliation | Role |
|---|---|---|
| Broenkow, William | Moss Landing Marine Laboratories (MLML) | Principal Investigator |
| Chandler, Cynthia L. | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
Vertical profiles of PAR, upwelled irradiance w/CTD data
PI: William Broenkow of: Moss Landing Marine Laboratories dataset: Vertical profiles of PAR, upwelled irradiance w/CTD data from Moss Landing dates: June 30, 1989 to July 4, 1989 location: N: 59.5283 S: 59.4900 W: -20.9833 E: -20.8383 project/cruise North Atlantic Bloom Experiment/Endeavor 198 ship: Endeavor
| File |
|---|
optics.csv (Comma Separated Values (.csv), 11.75 KB) MD5:f6edf499392d5f87abceab8e0451bc27 Primary data file for dataset ID 2567 |
| Parameter | Description | Units |
| sta | station | |
| cast | CTD cast number from event log | |
| event | event number from event log | |
| lat | latitude from event log | decimal degrees |
| lon | longitude from event log | decimal degrees |
| par_ei_norm | Mean incident Ei PAR | uMole/m^2/sec |
| depth_cast | nominal maximum depth of cast | meters |
| time1 | Mean Time GMT | decimal hrs |
| time_span1 | Time Span | min |
| repl_1 | Replicates per depth | |
| sal | Mean Salinity | dimensionless |
| temp1 | Mean Temperature | degrees C |
| press1 | Mean Pressure | decibars |
| o2 | Mean Oxygen | ml/l |
| beam | Mean Beam Attenuation 490 nm | 1/m |
| fluor | Mean Rescaled Fluorescence 680 nm | |
| time2 | Mean Time GMT | decimal hrs |
| time_span2 | Time Span | minutes |
| repl_2 | Replicates per depth | |
| lu_450 | Mean Upwelled Radiance Lu 450 nm | uW/cm^2/sr |
| lu_500 | Mean Upwelled Radiance Lu 500 nm | uW/cm^2/sr |
| par_eo | Mean PAR Spherical Irradiance Eo | uMole/m^2/sec |
| par_ei | Mean Incidence Irradiance Ei | uMole/m^2/sec |
| temp2 | Mean Temperature | degrees C |
| press2 | Mean Pressure | decibars |
| lu_450_pc | percent Upwelled Radiance Lu 450 nm | percent |
| lu_500_pc | percent Upwelled Radiance Lu (500 nm) | percent |
| par_eo_pc | percent PAR Spherical Irradiance Eo | percent |
| Dataset-specific Instrument Name | Bio-Optical Profiling System |
| Generic Instrument Name | Bio-Optical Profiling System |
| Dataset-specific Description | Bio Optical Profiler |
| Generic Instrument Description | Bio-Optical Profiling System (BOPS) is an updated version of the BOPS originally developed by Smith et al. (1984) and is used to collect optical data. The heart of the BOPS is a Biospherical instruments MER-1048 Spectroradiometer which measures up and downwelling spectral irradiance and upwelling spectral radiance. The MER-1048 also has sensors for Photosynthetically Available Radiation (PAR), depth, tilt and roll. In addition, temperature and conductivity are measured with a Sea-Bird CTD, chlorophyll fluorescence is measured with a Sea Tech fluorometer and beam transmission with a Sea Tech 25-cm transmissometer. The Mer-1048 acquires all the data 16 times a second, averages it to four records a second and sends it up the cable to a deck box and a Compaq-286 computer which stores the data on the hard disk. Additionally, a deck cell measures the downwelling surface irradiance in four spectral channels. Also surface PAR is measured continuously using a Biospherical Instruments QSR-240 Integrating PAR sensor. The profile data is commonly filtered to remove obvious data spikes and then binned into one-meter averages.
Raymond C. Smith, Charles R. Booth, and Jeffrey L. Star, "Oceanographic biooptical profiling system," Appl. Opt. 23, 2791-2797 (1984). |
| Dataset-specific Instrument Name | Conductivity, Temperature, Depth |
| Generic Instrument Name | CTD - profiler |
| Dataset-specific Description | CTD measurements taken, CTD unit unidentified |
| Generic Instrument Description | The Conductivity, Temperature, Depth (CTD) unit is an integrated instrument package designed to measure the conductivity, temperature, and pressure (depth) of the water column. The instrument is lowered via cable through the water column. It permits scientists to observe the physical properties in real-time via a conducting cable, which is typically connected to a CTD to a deck unit and computer on a ship. The CTD is often configured with additional optional sensors including fluorometers, transmissometers and/or radiometers. It is often combined with a Rosette of water sampling bottles (e.g. Niskin, GO-FLO) for collecting discrete water samples during the cast.
This term applies to profiling CTDs. For fixed CTDs, see https://www.bco-dmo.org/instrument/869934. |
| Website | |
| Platform | R/V Endeavor |
| Start Date | 1989-06-28 |
| End Date | 1989-07-07 |
| Description | post bloom cruise; 7 locations; 63°N 25°W to 59°N 14°W |
One of the first major activities of JGOFS was a multinational pilot project, North Atlantic Bloom Experiment (NABE), carried out along longitude 20° West in 1989 through 1991. The United States participated in 1989 only, with the April deployment of two sediment trap arrays at 48° and 34° North. Three process-oriented cruises where conducted, April through July 1989, from R/V Atlantis II and R/V Endeavor focusing on sites at 46° and 59° North. Coordination of the NABE process-study cruises was supported by NSF-OCE award # 8814229. Ancillary sea surface mapping and AXBT profiling data were collected from NASA's P3 aircraft for a series of one day flights, April through June 1989.
A detailed description of NABE and the initial synthesis of the complete program data collection efforts appear in: Topical Studies in Oceanography, JGOFS: The North Atlantic Bloom Experiment (1993), Deep-Sea Research II, Volume 40 No. 1/2.
The U.S. JGOFS Data management office compiled a preliminary NABE data report of U.S. activities: Slagle, R. and G. Heimerdinger, 1991. U.S. Joint Global Ocean Flux Study, North Atlantic Bloom Experiment, Process Study Data Report P-1, April-July 1989. NODC/U.S. JGOFS Data Management Office, Woods Hole Oceanographic Institution, 315 pp. (out of print).
The United States Joint Global Ocean Flux Study was a national component of international JGOFS and an integral part of global climate change research.
The U.S. launched the Joint Global Ocean Flux Study (JGOFS) in the late 1980s to study the ocean carbon cycle. An ambitious goal was set to understand the controls on the concentrations and fluxes of carbon and associated nutrients in the ocean. A new field of ocean biogeochemistry emerged with an emphasis on quality measurements of carbon system parameters and interdisciplinary field studies of the biological, chemical and physical process which control the ocean carbon cycle. As we studied ocean biogeochemistry, we learned that our simple views of carbon uptake and transport were severely limited, and a new "wave" of ocean science was born. U.S. JGOFS has been supported primarily by the U.S. National Science Foundation in collaboration with the National Oceanic and Atmospheric Administration, the National Aeronautics and Space Administration, the Department of Energy and the Office of Naval Research. U.S. JGOFS, ended in 2005 with the conclusion of the Synthesis and Modeling Project (SMP).
| Funding Source | Award |
|---|---|
| National Science Foundation (NSF) |