Processed standard depth (pressure) CTD data from SOGLOBEC survey cruises on RVIB Nathaniel B. Palmer - NBP0103; NBP0104; NBP0202; NBP0204 - in the Southern Ocean from 2001-2002 (SOGLOBEC project)

Website: https://www.bco-dmo.org/dataset/2360
Data Type: Cruise Results
Version: 1
Version Date: 2003-06-13

Project
» U.S. GLOBEC Southern Ocean (SOGLOBEC)

Program
» U.S. GLOBal ocean ECosystems dynamics (U.S. GLOBEC)
ContributorsAffiliationRole
Klinck, John M.Old Dominion University (ODU)Principal Investigator
Hofmann, Eileen E.Old Dominion University (ODU)Co-Principal Investigator
Allison, DickyWoods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager

Abstract
Processed standard depth (pressure) CTD data from SOGLOBEC survey cruises on RVIB Nathaniel B. Palmer - NBP0103; NBP0104; NBP0202; NBP0204 - in the Southern Ocean from 2001-2002 (SOGLOBEC project)


Coverage

Spatial Extent: N:-64.0063 E:-61.754 S:-70.6332 W:-77.7745
Temporal Extent: 2001 - 2002

Dataset Description

CTD profile data from the Southern Ocean

Note:
Some variables have been eliminated from the display but are nevertheless available. These variables include: Temperature0, Temperature1, Salinity0 and Salinity1. These variables are reported from the primary (0) and secondary (1) temperature and conductivity sensors.

John Klinck has provided Matlab® routines to use to read and display the data. When you use his routines you'll need to use the data in the format he provided or alter the routines to suit the data format you have. His routines are available in a package or individually.

NBP0103.event.tar.gz and NBP0104.event.tar.gz and NBP0202.event.tar.gz:
These have event files for all hydrographic events as well as separate files for ctd, xctd and xbt events. [NB: This data is also available directly on-line]

NBP0103.ctd.tar.gz and NBP0104.ctd.tar.gz and NBP0202.ctd.tar.gz:
These files have two subdirectories (OneMeter and StdDepth) with ascii files for casts with the resolution indicated by the directory name. The files are ctdxxx.dat where xxx is the cast number, with leading zeros if necessary. The data in these files is self describing. The readctd routine in the matlab package will read these files. The first line in the file tells how many data items in the file (all ctd files have identical structure).

(Package) soglobec.matlab.tar.gz:
This file has 5 subdirectories (Ctd, General, Grid, Oceans, SeaWater) with a bunch of tools for plotting the above ctd data. It uses the oceans and seawater routines that are widely available (but copies are included). There is also a set of routines to convert between lat-lon and a universal transverse mercator mapping that we use for station location. There is a startup.m file in "Ctd" to point to General, Oceans and SeaWater. In "Ctd" is a subdirectory (matlab) with various routines. The routines in the main directory are drivers to make multiple figures. There is documentation of these routines in the files and in the folders.

(Individual routines) soglobec.matlab. Hint: Read routines in "General" first, then go to "Ctd" for startup.m file.

New Hint (6/13/03): There is a new SetupPlots.m file in the "General" m-files folder. "This file chooses stations from the four cruises for the various plots. Since there was so little data from the 0204 cruise, individual lines across the grid were not specified(they may be later). A subset of the stations were chosen that are the "official" casts at each station occupied." J.Klinck

Data and Software provided by:
John M. Klinck
Center for Coastal Physical Oceanography
Department of Ocean, Earth and Atmospheric Sciences
Crittenton Hall
Old Dominion University
Norfolk, Virginia 23529

phone: 757 683-6005, fax: 757 683-5550
email: klinck@ccpo.odu.edu


File updated 01/04/2006; gfh


Methods & Sampling

CTD profile data from the Southern Ocean. Some variables have been eliminated from the display but are nevertheless available. These variables include: Temperature0, Temperature1, Salinity0 and Salinity1. These variables are reported from the primary (0) and secondary (1) temperature and conductivity sensors.


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Data Files

File
ctd_JK_std_depth.csv
(Comma Separated Values (.csv), 845.25 KB)
MD5:ac7f7a569015408bb7d3b448d0d9e83b
Primary data file for dataset ID 2360

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Parameters

ParameterDescriptionUnits
cruiseid

cruise identifier. (e.g., LMG0103, NPB0104)

event

event or operation number, a unique ID

cast

CTD cast number, generally consecutive within cruise

year

year, GMT time

yrday_gmt

year day, GMT, based on Julian calendar, whole day

YYY
time_gmt

time, GMT time

HHmm
lat

latitude, negative = South

DD.D
lon

longitude, negative = West

DDD.D
xgrid

Distance from the grid origin in the northeast direction in kilometers.
(xgrid,ygrid) define a point. Complete explanation of the Southern Ocean grid system

ygrid

Distance from the grid origin in the northeast direction in kilometers.
(xgrid,ygrid) define a point. Complete explanation of the Southern Ocean grid system

depth_w

depth of water

meters
depth_cast

max. depth of cast

meters
station

station number, some stations have multiple casts

press

depth of data point or sample reported as pressure

decibars
temp

water temperature, average of the primary and secondary temp. sensors

degrees C.
sal

salinity, average of salinities calculated from the primary and secondary
conductivity sensors, PSU

potemp

potential temperature

degrees C
sigma_0

potential density at surface (0 decibars)

kg/m<sup>3</sup>minus 1000
sigma_1000

potential density at 1000 decibars

kg/m<sup>3</sup>minus 1000
bvfq

buoyancy frequency, N squared

1/seconds<sup>2</sup>
o2

dissolved oxygen

umol/kg
par

down welled Photo synthetically Available Radiation (PAR)

uE/cm<sup>2</sup>/sec
trans

light transmission

percent
flvolt

fluorescence

volts


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Instruments

Dataset-specific Instrument Name
Conductivity, Temperature, Depth
Generic Instrument Name
CTD - profiler
Dataset-specific Description
CMiPS and FRRF added to instrument column,coupled with CTD when appropriate.
Generic Instrument 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.


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Deployments

NBP0103

Website
Platform
RVIB Nathaniel B. Palmer
Report
Start Date
2001-04-24
End Date
2001-06-05
Description
Methods & Sampling
CTD profile data from the Southern Ocean. Some variables have been eliminated from the display but are nevertheless available. These variables include: Temperature0, Temperature1, Salinity0 and Salinity1. These variables are reported from the primary (0) and secondary (1) temperature and conductivity sensors.

NBP0104

Website
Platform
RVIB Nathaniel B. Palmer
Report
Start Date
2001-07-22
End Date
2001-08-31
Description
Methods & Sampling
CTD profile data from the Southern Ocean. Some variables have been eliminated from the display but are nevertheless available. These variables include: Temperature0, Temperature1, Salinity0 and Salinity1. These variables are reported from the primary (0) and secondary (1) temperature and conductivity sensors.

NBP0202

Website
Platform
RVIB Nathaniel B. Palmer
Report
Start Date
2002-04-09
End Date
2002-05-21
Description
Methods & Sampling
CTD profile data from the Southern Ocean. Some variables have been eliminated from the display but are nevertheless available. These variables include: Temperature0, Temperature1, Salinity0 and Salinity1. These variables are reported from the primary (0) and secondary (1) temperature and conductivity sensors.

NBP0204

Website
Platform
RVIB Nathaniel B. Palmer
Report
Start Date
2002-07-31
End Date
2002-09-18
Description
Also see NBP0204 Cruise Data Report

Methods & Sampling
CTD profile data from the Southern Ocean. Some variables have been eliminated from the display but are nevertheless available. These variables include: Temperature0, Temperature1, Salinity0 and Salinity1. These variables are reported from the primary (0) and secondary (1) temperature and conductivity sensors.


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Project Information

U.S. GLOBEC Southern Ocean (SOGLOBEC)


Coverage: Southern Ocean


The fundamental objectives of United States Global Ocean Ecosystems Dynamics (U.S. GLOBEC) Program are dependent upon the cooperation of scientists from several disciplines. Physicists, biologists, and chemists must make use of data collected during U.S. GLOBEC field programs to further our understanding of the interplay of physics, biology, and chemistry. Our objectives require quantitative analysis of interdisciplinary data sets and, therefore, data must be exchanged between researchers. To extract the full scientific value, data must be made available to the scientific community on a timely basis.



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Program Information

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


Coverage: Global


U.S. GLOBEC (GLOBal ocean ECosystems dynamics) is a research program organized by oceanographers and fisheries scientists to address the question of how global climate change may affect the abundance and production of animals in the sea.

The U.S. GLOBEC Program currently had major research efforts underway in the Georges Bank / Northwest Atlantic Region, and the Northeast Pacific (with components in the California Current and in the Coastal Gulf of Alaska). U.S. GLOBEC was a major contributor to International GLOBEC efforts in the Southern Ocean and Western Antarctic Peninsula (WAP).



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Funding

Funding SourceAward
NSF Antarctic Sciences (NSF ANT)

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