| Contributors | Affiliation | Role |
|---|---|---|
| Huntley, Mark | University of California-San Diego (UCSD-SIO) | Principal Investigator |
| Zhou, Meng | University of Massachusetts Boston (UMB-SMS) | Co-Principal Investigator |
| Chandler, Cynthia L. | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
Optical Plankton Counter data - MOCNESS Tows
| Parameter | Description | Units |
| event | event number from event log | |
| sta | station number from event log | |
| depth_r | depth range sampled lt_150 = zero to 150 meters gt_150 = greater than 150 meters | |
| vol_filt | water volume filtered | m^3 |
| counts_tot | total counts | |
| opc_class | class number | |
| opc_wt_mid | middle value of each weight class | ugC |
| opc_wt_biomass | normalized biomass spectra - weight classes | 1/m^3 |
| opc_wt_abund | normalized abundance spectra - weight classes | 1/ugC*m^3 |
| opc_size_mid | middle value of each ESD size class | mm |
| opc_size_abund | normalized abundance spectra - ESD size classes | 1/mm*m^3 |
| opc_size_biovol | normalized bio-volume spectra - ESD size classes | mm^3/mm*m^3 |
| opc_vol_mid | middle value of each volume class | mm^3 |
| opc_vol_biovol | normalized bio-volume spectra - volume classes | 1/m^3 |
| Dataset-specific Instrument Name | MOCNESS |
| Generic Instrument Name | MOCNESS |
| Dataset-specific Description | MOCNESS (Multiple Opening and Closing Nets Envionment Sampling System) |
| Generic Instrument Description | The Multiple Opening/Closing Net and Environmental Sensing System or MOCNESS is a family of net systems based on the Tucker Trawl principle. There are currently 8 different sizes of MOCNESS in existence which are designed for capture of different size ranges of zooplankton and micro-nekton Each system is designated according to the size of the net mouth opening and in two cases, the number of nets it carries. The original MOCNESS (Wiebe et al, 1976) was a redesigned and improved version of a system described by Frost and McCrone (1974).(from MOCNESS manual) This designation is used when the specific type of MOCNESS (number and size of nets) was not specified by the contributing investigator. |
| Dataset-specific Instrument Name | Optical Plankton Counter |
| Generic Instrument Name | Optical Plankton Counter |
| Generic Instrument Description | An OPC provides quantitative measurements of abundance and sizes of mesozooplankton ranging between approximately 0.25 and 14 mm in Equivalent Spherical Diameter (ESD), and has the capability to integrate measurements from other sensors such as a CTD, fluorometer and Global Positioning System (GPS). It can be deployed on a variety of instruments such as SeaSoar, Aries, Scanfish, MOCNESS, a bongo net or simple towing frame. The data from an OPC are typically transmitted to a data acquisition computer through two conducting wires in a towing cable at real time, but it can also be modified to have an internal memory. Large amounts of data are produced. The procedures employed by OPC users vary from; i) estimating integrated biomass by integrating the OPC size distributions, ii) comparing size distributions between OPC and net samples, and iii) simply isolating a size region in the OPC size distribution which correspond solely to specific taxa, eg. Calanus spp..
from: Zhou, M., Tande, K., 2002. Optical Plankton Counter Workshop. GLOBEC Report 17, University of Tromso, Tromso |
| Website | |
| Platform | RVIB Nathaniel B. Palmer |
| Report | |
| Start Date | 1996-08-30 |
| End Date | 1996-09-24 |
| Description | Site Survey Cruise Methods & Sampling PI: Mark Huntley and Meng Zhou of: Scripps Institution of Oceanography (Huntley) and University of Minnesota, Duluth (Zhou) dataset: Optical Plankton Counter data - MOCNESS Tows dates: September 08, 1996 to September 17, 1996 location: N: -56.9167 S: -61.9572 W: -170.1833 E: -169.9667 project/cruise: AESOPS/NBP-96-4 - Site Survey Cruise ship: R/V Nathaniel B. Palmer Sampling Methodology Note 1: The class will not show up if nothing were counted within that class. Note 2: OPC data is reported on a Log10 basis. |
| Website | |
| Platform | RVIB Nathaniel B. Palmer |
| Report | |
| Start Date | 1996-10-02 |
| End Date | 1996-11-08 |
| Description | Ross Sea Process Study 1 Methods & Sampling PI: Mark Huntley and Meng Zhou of: Scripps Institution of Oceanography (Huntley) and University of Minnesota, Duluth (Zhou) dataset: Optical Plankton Counter data - MOCNESS Tows dates: October 18, 1996 to November 05, 1996 location: N: -76.3635 S: -77.9553 W: 171.9613 E: -175.7857 project/cruise: AESOPS/NBP-96-4A - Ross Sea Process 1 Cruise ship: R/V Nathaniel B. Palmer Sampling Methodology Note 1: The class will not show up if nothing were counted within that class. Note 2: OPC data is reported on a Log10 basis. |
| Website | |
| Platform | RVIB Nathaniel B. Palmer |
| Report | |
| Start Date | 1997-01-13 |
| End Date | 1997-02-11 |
| Description | Ross Sea Process Study 2 Methods & Sampling PI: Mark Huntley and Meng Zhou of: Scripps Institution of Oceanography (Huntley) and University of Minnesota, Duluth (Zhou) dataset: Optical Plankton Counter data - MOCNESS Tows dates: January 14, 1997 to February 09, 1997 location: N: -74.0265 S: -78.0207 W: 163.4075 E: -176.0478 project/cruise: AESOPS/NBP-97-1 - Ross Sea Process 2 Cruise ship: R/V Nathaniel B. Palmer Sampling Methodology Note 1: The class will not show up if nothing were counted within that class. Note 2: OPC data is reported on a Log10 basis. |
| Website | |
| Platform | RVIB Nathaniel B. Palmer |
| Report | |
| Start Date | 1997-04-04 |
| End Date | 1997-05-11 |
| Description | Ross Sea Process Study 3 Methods & Sampling PI: Mark Huntley and Meng Zhou of: Scripps Institution of Oceanography (Huntley) and University of Minnesota, Duluth (Zhou) dataset: Optical Plankton Counter data - MOCNESS Tows dates: April 14, 1997 to April 29, 1997 location: N: -73.999 S: -77.9385 W: 168.9599 E: -176.1732 project/cruise: AESOPS/NBP-97-3 - Ross Sea Process 3 Cruise ship: R/V Nathaniel B. Palmer Sampling Methodology Note 1: The class will not show up if nothing were counted within that class. Note 2: OPC data is reported on a Log10 basis. |
The U.S. Southern Ocean JGOFS program, called Antarctic Environment and Southern Ocean Process Study (AESOPS), began in August 1996 and continued through March 1998. The U.S. JGOFS AESOPS program focused on two regions in the Southern Ocean: an east/west section of the Ross-Sea continental shelf along 76.5°S, and a second north/south section of the Southern Ocean spanning the Antarctic Circumpolar Current (ACC) at ~170°W (identified as the Polar Front). The science program, coordinated by Antarctic Support Associates (ASA), comprised eleven cruises using the R.V.I.B Nathaniel B. Palmer and R/V Roger Revelle as observational platforms and for deployment and recovery of instrumented moorings and sediment-trap arrays. The Ross-Sea region was occupied on six occasions and the Polar Front five times. Mapping data were obtained from SeaSoar, ADCP, and bathymetric systems. Satellite coverage was provided by the NASA SeaWiFS and the NOAA/NASA Pathfinder programs.
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).