Mesozooplankton biomass from R/V Atlantis II cruises AII-119-4, AII-119-5 in the North Atlantic in 1989 (U.S. JGOFS NABE project)

Website: https://www.bco-dmo.org/dataset/2583
Version: December 5, 1994
Version Date: 1994-12-05

Project
» U.S. JGOFS North Atlantic Bloom Experiment (NABE)

Program
» U.S. Joint Global Ocean Flux Study (U.S. JGOFS)
ContributorsAffiliationRole
Dam, Hans G.University of Connecticut (UConn)Principal Investigator
Chandler, Cynthia L.Woods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager


Dataset Description

Mesozooplankton biomass

Methods & Sampling

   PI:              Hans Dam
   of:              University of Connecticut
   dataset:         Mesozooplankton biomass
   dates:           April 25, 1989 to May 31, 1989
   location:        N: 47.0603  S: 46.255  W: -20.2152  E: -17.6567
   project/cruise:  North Atlantic Bloom Experiment/Atlantis II 119, leg 4 and 5
   ship:            R/V Atlantis II
 
   Methodology
   See:  Dam, Hans G., Carolyn Miller and Sigrun Jonasdottir, 1993.  The trophic role of
   mesozooplankton at 47N and 20W during the North Atlantic Bloom Experiment.  Deep-Sea
   Research II, Vol. 40, N0. 12 pp 197-212.
 
   DMO Note:
   The reporting of plankton tow events was inconsistent, event numbers
   may reference a single tow or a series of tows.  Use caution in a
   merging of data from different sources.
 

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Data Files

File
zoomass.csv
(Comma Separated Values (.csv), 4.02 KB)
MD5:44ee060c50a9786771ff24d3e1489ca7
Primary data file for dataset ID 2583

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Parameters

ParameterDescriptionUnits
yearyear (as YYYY) dimensionless
eventevent number, from event log dimensionless
stastation number from event log dimensionless
castcast/operation number, numbered consecutively within station dimensionless
depth_towdepth of plankton tow meters
aliquotaliquot value, the reciprocal (1/value) of the fraction of the samle volume employed for the CHN measurement 1/value
vol_filtvolume of water filtered by the net cubic meters
sizefracsize fraction/interval of organisms analyzed millimeters
Ccarbon content micrograms
Nnitrogen content micrograms
C_masscarbon biomass biomass values are the means of two pseudoreplicates (subsamples from one tow) milligrams C/cubic meter
N_massnitrogen biomass milligrams N/cubic meter
C_to_Ncarbon/nitrogen ratio


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Instruments

Dataset-specific Instrument Name
RingNet
Generic Instrument Name
Ring Net
Dataset-specific Description
a 1 meter ring net fitted with a 0.2 mm mesh
Generic Instrument Description
A Ring Net is a generic plankton net, made by attaching a net of any mesh size to a metal ring of any diameter. There are 1 meter, .75 meter, .25 meter and .5 meter nets that are used regularly. The most common zooplankton ring net is 1 meter in diameter and of mesh size .333mm, also known as a 'meter net' (see Meter Net).

Dataset-specific Instrument Name
Mechanical Flowmeter
Generic Instrument Name
Mechanical Flowmeter
Dataset-specific Description
A General Oceanics flowmeter mounted at the mouth of the net and a filtering cod end (mesh size 0.2 mm).
Generic Instrument Description
Manufactured by General Oceanics, a mechanical flow meter is used with plankton tows to determine the volume of water which flows through the net. Flow meters are also used in rivers, estuaries, canals, sewer outfalls, pipes, and harbor entrances to determine water velocity and flow distance information.


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Deployments

AII-119-5

Website
Platform
R/V Atlantis II
Start Date
1989-05-15
End Date
1989-06-06
Description
late bloom cruise; 31 locations; 61N 22W to 41N 17W

Methods & Sampling
PI: Hans Dam of: University of Connecticut dataset: Mesozooplankton biomass dates: April 25, 1989 to May 31, 1989 location: N: 47.0603 S: 46.255 W: -20.2152 E: -17.6567 project/cruise: North Atlantic Bloom Experiment/Atlantis II 119, leg 5 ship: R/V Atlantis II Methodology See: Dam, Hans G., Carolyn Miller and Sigrun Jonasdottir, 1993. The trophic role of mesozooplankton at 47N and 20W during the North Atlantic Bloom Experiment. Deep-Sea Research II, Vol. 40, N0. 12 pp 197-212. DMO Note: The reporting of plankton tow events was inconsistent, event numbers may reference a single tow or a series of tows. Use caution in a merging of data from different sources.

AII-119-4

Website
Platform
R/V Atlantis II
Start Date
1989-04-17
End Date
1989-05-11
Description
early bloom cruise; 17 locations; 60N 21W to 46N 18W

Methods & Sampling
PI: Hans Dam of: University of Connecticut dataset: Mesozooplankton biomass dates: April 25, 1989 to May 31, 1989 location: N: 47.0603 S: 46.255 W: -20.2152 E: -17.6567 project/cruise: North Atlantic Bloom Experiment/Atlantis II 119, leg 4 ship: R/V Atlantis II Methodology See: Dam, Hans G., Carolyn Miller and Sigrun Jonasdottir, 1993. The trophic role of mesozooplankton at 47N and 20W during the North Atlantic Bloom Experiment. Deep-Sea Research II, Vol. 40, N0. 12 pp 197-212. DMO Note: The reporting of plankton tow events was inconsistent, event numbers may reference a single tow or a series of tows. Use caution in a merging of data from different sources.


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Project Information

U.S. JGOFS North Atlantic Bloom Experiment (NABE)


Coverage: North Atlantic


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).



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Program Information

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


Coverage: Global


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).



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Funding

Funding SourceAward
National Science Foundation (NSF)

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