Picophytoplankton cell counts from R/V Thomas G. Thompson TT049, TT053 cruises in the Arabian Sea in 1995 (U.S. JGOFS Arabian Sea project)

Website: https://www.bco-dmo.org/dataset/2558
Version: July 9, 2001
Version Date: 2001-07-09

Project
» U.S. JGOFS Arabian Sea (Arabian Sea)

Program
» U.S. Joint Global Ocean Flux Study (U.S. JGOFS)
ContributorsAffiliationRole
Olson, RobertWoods Hole Oceanographic Institution (WHOI)Principal Investigator
Chandler, Cynthia L.Woods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager


Dataset Description

Picophytoplankton cell counts


Acquisition Description

See Platform deployments for cruise specific documentation


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Parameters

ParameterDescriptionUnits
eventevent number from event log
stastation number from event log
sta_stdArabian Sea standard station identifier
castCTD rosette cast number from event log
botCTD rosette bottle number
depth_nnominal sample depth meters
coccus_sSynechococcus cells/milliliter
coccus_pProchlorococcus cells/milliliter
phyto_e_uultra eukaryotic phytoplankton cells/milliliter


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Instruments

Dataset-specific Instrument Name
Niskin Bottle
Generic Instrument Name
Niskin bottle
Dataset-specific Description
CTD/Niskin Rosette bottles.
Generic Instrument Description
A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc.


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Deployments

TT049

Website
Platform
R/V Thomas G. Thompson
Start Date
1995-07-17
End Date
1995-08-15
Description
Acquisition Description
PI: Robert Olson of: Woods Hole Oceanographic Institution dataset: Picophytoplankton cell counts dates: July 18, 1995 to August 11, 1995 location: N: 22.5001 S: 9.9966 W: 57.2997 E: 68.7507 project/cruise: Arabian Sea/TTN-049 - Process Cruise 4 (Middle SW Monsoon) ship: Thomas Thompson PI Note: Our data on picophytoplankton counts were obtained by flow cytometry of preserved samples (0.1% glutaraldehyde, stored in liquid nitrogen). Samples collected from CTD/rosette bottle casts, usually 12 depths per station. Rob Olson Biology Department Woods Hole Oceanographic Institution March 18, 1997 Notes on revised picophytoplankton data for TTN049, Process Cruise 4 Two important changes were made: 1. Correction was made for a software flaw which resulted in miscalculation of the analysis time and thus produced a 10%-15% error in cell numbers. 2. Cells observed in deep secondary chlorophyll maxima at the sub-oxic zone and previously classified as picoeukaryotes were reclassified as Prochlorophytes.

TT053

Website
Platform
R/V Thomas G. Thompson
Start Date
1995-10-29
End Date
1995-11-26
Description
Acquisition Description
PI: Robert Olson (Woods Hole Oceanographic Institution) dataset: Picophytoplankton cell counts dates: October 29, 1995 to November 25, 1995 location: N: 24.3274 S: 10.0928 W: 56.5005 E: 67.1666 project/cruise: Arabian Sea/TTN-053 - Process Cruise 6 (bio-optics) ship: Thomas Thompson PI Note: Our data on picophytoplankton counts where obtained by flow cytometry of preserved samples (0.1% glutaraldehyde, stored in liquid nitrogen). Samples collected from CTD casts.


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Project Information

U.S. JGOFS Arabian Sea (Arabian Sea)


Coverage: Arabian Sea


The U.S. Arabian Sea Expedition which began in September 1994 and ended in January 1996, had three major components: a U.S. JGOFS Process Study, supported by the National Science Foundation (NSF); Forced Upper Ocean Dynamics, an Office of Naval Research (ONR) initiative; and shipboard and aircraft measurements supported by the National Aeronautics and Space Administration (NASA). The Expedition consisted of 17 cruises aboard the R/V Thomas Thompson, year-long moored deployments of five instrumented surface buoys and five sediment-trap arrays, aircraft overflights and satellite observations. Of the seventeen ship cruises, six were allocated to repeat process survey cruises, four to SeaSoar mapping cruises, six to mooring and benthic work, and a single calibration cruise which was essentially conducted in transit to the Arabian Sea.



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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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