Dataset: simulated in situ primary production
Deployment: NBP0204

Simulated in Situ production data from NBP cruises

Principal Investigator:

Dr Maria Vernet (University of California-San Diego, UCSD-SIO)

BCO-DMO Data Manager:

Ms Dicky Allison (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

U.S. GLOBEC Southern Ocean (SOGLOBEC)

Deployment Synonyms:

GLOBECIV

Coordinated Deployments:

LMG0205

Data URL:

https://www.bco-dmo.org/dataset-deployment/450352/data

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Description

Simulated in Situ Primary Production Data

Data Notes:
1..Cruise NBP0104. A total of only 6 SIS experiments were completed, due to freezing of the deck incubator. Ref: cruise report.
2..PAR measurements. PAR was measured with a Biospherical Instruments GUV Radiometer (cosine-corrected downwelled irradiance) mounted on ship's science mast configured with PAR channels (400-700nm). PAR values are intergated over the duration of the in situ experiment. Ref: cruise reports

A short note on the "Southern Ocean Grid System":
The grid is a cartesian plane covering the sample region in which distances are easy to calculate. The grid system used for SOGLOBEC is a universal transverse mercator (UTM) projection with a certain base point and rotation. The base point was chosen in the far south and the rotation was chosen to create one axis along the peninsula, and the other offshore. The units of UTM are meters, but the points are chosen in km rounded to the nearest km. Negative numbers mean that samples were taken southwest of the y axis or southeast of the x axis. For more deatails see: Complete explanation of the Southern Ocean grid system.

Reference:
Smith, R.C., H. Dierssen, and M. Vernet. in press. Phytoplankton biomass and productivity to the west of the Antarctic Peninsula. In E.Hofmann, L. Quetin, and R. Ross (Eds.), Foundations for ecosystem research in the western Antarctic Peninsula region. Washington, D.C.: American Geophysical Union.

Data contributed by:
Maria Vernet
Integrative Oceanographic Division
Scripps Institution of Oceanography
University of California San Diego
La Jolla, California 92093-0218

Phone: 1-858-534-5322
E-mail: mvernet@ucsd.edu

Last updated: December 02, 2005; gfh

Methods & Sampling

Dataset acquisition description

Cruise NBP0104. A total of only 6 SIS experiments were completed, due to freezing of the deck incubator. Ref: cruise report.
PAR measurements. PAR was measured with a Biospherical Instruments GUV Radiometer (cosine-corrected downwelled irradiance) mounted on ship science mast configured with PAR channels (400-700nm). PAR values are intergated over the duration of the in situ experiment. Ref: cruise reports.

Deployment-specific acquisition description

Cruise NBP0104. A total of only 6 SIS experiments were completed, due to freezing of the deck incubator. Ref: cruise report.
PAR measurements. PAR was measured with a Biospherical Instruments GUV Radiometer (cosine-corrected downwelled irradiance) mounted on ship science mast configured with PAR channels (400-700nm). PAR values are intergated over the duration of the in situ experiment. Ref: cruise reports.

Data Processing Description

Dataset Processing Description

More information about this dataset deployment

Funding

Award Number	Funding Source
ANT-9910175	NSF Antarctic Sciences

Instruments

CTD - profiler

Supplied Name: Conductivity, Temperature, Depth

Supplied Description:

CTD measurements taken, CTD unit unidentified

Instrument Type

Generic Name: CTD - profiler

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/130/

Generic 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.

Photosynthetically Available Radiation Sensor

Supplied Name: Photosynthetically Available Radiation Sensors

Supplied Description:

Photosynthetically Available Radiation Sensors, PAR was measured with a Biospherical Instruments GUV Radiometer (cosine-corrected downwelled irradiance) mounted on ship's science mast configured with PAR channels (400-700nm).

Instrument Type

Generic Name: Photosynthetically Available Radiation Sensor

Acronym: PAR sensor

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/122/

Generic Description:

A PAR sensor measures photosynthetically available (or active) radiation. The sensor measures photon flux density (photons per second per square meter) within the visible wavelength range (typically 400 to 700 nanometers). PAR gives an indication of the total energy available to plants for photosynthesis. This instrument name is used when specific type, make and model are not known.

Radiometer

Supplied Description:

a Biospherical Instruments GUV Radiometer (cosine-corrected downwelled irradiance) mounted on ship's science mast configured with PAR channels (400-700nm).

Instrument Type

Generic Name: Radiometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/122/

Generic Description:

Radiometer is a generic term for a range of instruments used to measure electromagnetic radiation (radiance and irradiance) in the atmosphere or the water column. For example, this instrument category includes free-fall spectral radiometer (SPMR/SMSR System, Satlantic, Inc), profiling or deck cosine PAR units (PUV-500 and 510, Biospherical Instruments, Inc). This is a generic term used when specific type, make and model were not specified.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
cruiseid	cruise identification. (e.g. NBP0104)		cruiseid
year	year, GMT, (e.g. 2001)		year
station_desc	station description, as defined in a grid system, or plain text		station_desc
station	station number, generally numbered consecutively within cruise		station
grid_line	standard grid line, a grid location system used by GLOBEC Southern Ocean, see grid notes below		grid_line
grid_sta	a grid location for a sampling obseration/station, used with grid_line		grid_sta
yrday_gmt	year day, based on Julian Calendar	YYY.Y	yrday_gmt
lat	latitude, negative = South	degrees	lat
lon	longitude, negative = West	degrees	lon
event	event number, a unique number assigned to a specific sampling event.		event
cast	CTD cast number		cast
bottle	bottle number		bottle
depth	depth of sample or data point	meters	depth
production	primary production, from simulated in situ experiments	(mgC/m<sup>2</sup>/h)	production
prod_std_dev	standard deviation of production	(mgC/m<sup>2</sup>/h)	prod_std_dev
par_d_expt	downwelled Photosynthetically Available Radiation, 400-700 nm wave length, measured with cosine sensor response (EsPAR), units = uE/cm2/expt (expt = over the duration of an in situ experiment, some times less than 24 hrs.)	(uE/cm<sup>2</sup>/expt)	par_d_expt

Database

Contribute Data

Dataset: simulated in situ primary production
Deployment: NBP0204

Simulated in Situ Primary Production Data

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: simulated in situ primary productionDeployment: NBP0204

Simulated in Situ Primary Production Data

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Dataset: simulated in situ primary production
Deployment: NBP0204