Dataset: spherical_par

Name: Photosynthetically available radiation (PAR) from R/V Endeavor cruises in the Gulf of Maine and Georges Bank in 1995 as part of the U.S. GLOBEC program (GB project)
Published: 2004-08-31
Keywords: oceans

Cite This Dataset

DOI:10.1575/1912/bco-dmo.2476.1

Spatial Extent: N:42.327 E:-66.287 S:40.52 W:-69.02

Temporal Extent: 1995-01-12 - 1995-06-04

Project:

U.S. GLOBEC Georges Bank (GB)

Program:

U.S. GLOBal ocean ECosystems dynamics (U.S. GLOBEC)

Principal Investigator:

Jeff Van Keuren (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

Ms Dicky Allison (Woods Hole Oceanographic Institution, WHOI)

Version:

Version Date:

2004-08-31

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Photosynthetically available radiation (PAR) from R/V Endeavor cruises in the Gulf of Maine and Georges Bank in 1995 as part of the U.S. GLOBEC program (GB project)

Abstract:

Photosynthetically available radiation (PAR) from R/V Endeavor cruises in the Gulf of Maine and Georges Bank in 1995 as part of the U.S. GLOBEC program

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2004-08-31	National Oceanographic Data Center (NODC)	0106520	2013-05-15
2004-08-31	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.1575/1912/bco-dmo.2476.1	2019-11-28

Description

Photosynthetically Available Radiation

Most information regarding individual profiles is provided with the individual data files (location, correction to GMT, light units, sensor type and characteristics, date of latest calibration).
Upcast and downcast profiles sorted separately by depth, then time. Downcast listed first. Raw values listed - no averaging.
All profiles were taken with the same two (Biospherical Instruments, Inc. San Diego, CA) instruments: underwater unit (PUV-500) and matched deck unit (PUV-510). Last Calibration of Sensors: 15 DEC 95.
The December 1995 recalibration results have been applied to all readings. The change in calibrations from the previous April 1993 factory measurements were less than 2%.
All profiles were taken from same location on the R/V Endeavor: starboard side using the J-frame. Whenever sea condition allowed, the ship was turned such that the sun was shining on the starboard side and as close to amidship as possible.

Contributor: 
Dr Jeff Van Keuren                           
Wood Hole Oceanographic Inst.      
MS#35 
Woods Hole, MA 02543-1521 
   
Updated: August 31, 2004; G.Heimerdinger

Methods & Sampling

Photosynthetically Available Radiation. All profiles were taken with the same two (Biospherical Instruments, Inc. San Diego, CA) instruments: underwater unit (PUV-500) and matched deck unit (PUV-510). Last Calibration of Sensors: 15 DEC 95.

Data Processing Description

All profiles were taken from same location on the R/V Endeavor: starboard side using the J-frame. Whenever sea condition allowed, the ship was turned such that the sun was shining on the starboard side and as close to amidship as possible.

Data Files

File
spherical_par.csv (Comma Separated Values (.csv), 1.85 MB) MD5:f77872734d9e6c614302e4d7d055a2eb Primary data file for dataset ID 2476

More Information about this dataset

Funding Sources

Funding Source	Award Number
National Science Foundation	unknown GB NSF
National Oceanic and Atmospheric Administration	unknown GB NOAA

Deployments

Deployment	Start Date	Platform	Investigator
EN259	1995-01-10	R/V Endeavor	Dr Edward Durbin (Chief Scientist)	data info
EN262	1995-02-23	R/V Endeavor	Cabell S. Davis (Chief Scientist)	data info
EN264	1995-03-26	R/V Endeavor	Scott Gallager (Chief Scientist)	data info
EN266	1995-04-26	R/V Endeavor	Dian J. Gifford (Chief Scientist)	data info
EN267I	1995-05-22	R/V Endeavor	Robert G. Campbell (Chief Scientist)	data info

Instruments

Photosynthetically Available Radiation Sensor

Supplied Name: Photosynthetically Available Radiation Sensors

Supplied Description:

Photosynthetically Available Radiation Sensors. Biospherical Inst. PUV-500, PUV-510. Last Calibration of Sensors

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:

underwater unit (PUV-500) and matched deck unit (PUV-510).Last Calibration of Sensors

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

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

Supplied Name	Supplied description	Supplied Units	Standard Name
cruiseid	Cruise identification		cruiseid
platform	Platform name		platform
region	Geographical region		region
cast	Cast number		cast
station	Station number or identifier		station
day_local	Local day		day_local
month_local	Local month		month_local
year_local	Local year		no_bcodmo_term
timezone	Time zone correction for GMT conversion, modified to account for day light savings time		time_zone
lat	Latitude, negative = South	decimal degrees	lat
lon	Longitude, negative = West	decimal degrees	lon
time_local	Local time	hours and minutes	time_local
depth	Depth of sample	meters	depth
par_d	downwelling photosynthetically activeradiation with cosine sensor response	microEinstein/meter^2/second PAR (400-700nm)	par_d
par_platform	downwelling photosynthetically activeradiation with cosine sensor response, from ship's deck	microEinstein/meter^2/second PAR (400-700nm)	no_bcodmo_term