Dataset: OPC_seasoar

Name: Optical Plankton Counter data - SEASOAR Tows from R/V Roger Revelle KIWI6, KIWI8 cruises in the Southern Ocean, 1998 (U.S. JGOFS AESOPS project)
Published: 2001-03-22
Keywords: oceans

View Data: to access data, check the deployments below

Cite This Dataset

Project:

U.S. JGOFS Antarctic Environment and Southern Ocean Process Study (AESOPS)

Program:

U.S. Joint Global Ocean Flux Study (U.S. JGOFS)

Principal Investigator:

Dr Mark Huntley (University of California-San Diego, UCSD-SIO)

Co-Principal Investigator:

Meng Zhou (University of Massachusetts Boston, UMB-SMS)

BCO-DMO Data Manager:

Cynthia L. Chandler (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

final

Version Date:

2001-03-22

Validated:

Yes

Current State:

Final no updates expected

Optical Plankton Counter data - SEASOAR Tows from R/V Roger Revelle KIWI6, KIWI8 cruises in the Southern Ocean, 1998 (U.S. JGOFS AESOPS project)

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Description

Optical Plankton Counter data - SEASOAR Tows

More Information about this dataset

Funding Sources

None available yet

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
KIWI8	RR8	1998-01-08	R/V Roger Revelle	Kenneth H. Coale (Chief Scientist)	data info
KIWI6	RR6	1997-10-20	R/V Roger Revelle	Timothy Cowles (Chief Scientist)	data info

Instruments

MOCNESS

Supplied Description:

MOCNESS (Multiple Opening and Closing Nets Envionment Sampling System)

Instrument Type

Generic Name: MOCNESS

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/NETT0097/

Generic 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.

Optical Plankton Counter

Supplied Description:

Instrument Type

Generic Name: Optical Plankton Counter

Acronym: OPC

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/352/

Generic 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

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
depth_begin	starting depth of the integrated interval	meter	depth_begin
depth_end	ending depth of the integrated interval	meter	depth_end
lat_n	nominal latitude of the integrated interval	decimal degrees	no_bcodmo_term
lon_n	nominal longitude of the integrated interval	decimal degrees	no_bcodmo_term
ESD_XX	Equivalent Spherical Diameter size class number from 1 to 40 (see ESD note)		no_bcodmo_term
event	event number from event log		event
sta	station number from event log		sta
vol_filt	water volume filtered	m^3	vol_filt
counts_tot	total counts collected within the integrated interval normalized by the water volume filtered		no_bcodmo_term

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Database

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Dataset: OPC_seasoar