Processed CTD data from TM casts from RVIB Nathaniel B. Palmer, R/V Roger Revelle NBP-96-4A, NBP-97-3, NBP-97-8, KIWI6, KIWI8, KIWI9 cruises in the Southern Ocean, 1997-1998 (U.S. JGOFS AESOPS project)

Website: https://www.bco-dmo.org/dataset/2742
Version: July 8, 1999
Version Date: 1999-07-08

Project
» U.S. JGOFS Antarctic Environment and Southern Ocean Process Study (AESOPS)

Program
» U.S. Joint Global Ocean Flux Study (U.S. JGOFS)
ContributorsAffiliationRole
Morrison, John M.North Carolina State University - Marine, Earth and Atmospheric Sciences (NCSU MEAS)Principal Investigator
Chandler, Cynthia L.Woods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager


Dataset Description

Processed CTD data from TM casts


Methods & Sampling

   PI:              John Morrison
   of:              North Carolina State University
   dataset:         Processed CTD data from TM casts
 
 
   AESOPS Investigators, Please note:
   Begin and end parameters for time, latitude and longitude are
   provided in the core CTD and Bottle data.  Investigators
   submitting data related to CTD/Bottle casts are urged to use
   the single lat/lon entry from the Chief Scientist's event log.
 
  

[ table of contents | back to top ]

Parameters

ParameterDescriptionUnits
eventevent number from event log
stastation number from event log
castCTD rosette cast number
datedate (YYYYMMDD) decoded as follows YYYY = year, MM = month, DD = day Date converted to GMT.
time_beginstarting time of cast in UTC decimal hours
time_endending time of cast in UTC decimal hours
lat_beginstarting latitude of cast, negative = south decimal degrees
lon_beginstarting longitude of cast, negative = west decimal degrees
lat_endending latitude of cast decimal degrees
lon_endending longitude of cast decimal degrees
depthdepth of sample meters
pressdepth of sample reported as pressure decibars
temptemperature degrees C
condconductivity CTD millimohs
salsalinity
potemppotental temperture degrees C
sigma_tsigma t kilograms/meter^3
sigma_0potental density kilograms/meter^3
parPAR (Irradience) uEinsteins/cm^2/sec
O2_1oxygen milliters/liter
O2_2oxygen micromoles/kilogram
O2_3oxygen micromoles/liter


[ table of contents | back to top ]

Instruments

Dataset-specific Instrument Name
CTD Sea-Bird
Generic Instrument Name
CTD Sea-Bird
Generic Instrument Description
Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics, no specific unit identified. This instrument designation is used when specific make and model are not known. See also other SeaBird instruments listed under CTD. More information from Sea-Bird Electronics.


[ table of contents | back to top ]

Deployments

NBP-96-04A

Website
Platform
RVIB Nathaniel B. Palmer
Report
Start Date
1996-10-02
End Date
1996-11-08
Description
Ross Sea Process Study 1

Methods & Sampling
PI: John Morrison of: North Carolina State University dataset: Processed CTD data from TM casts dates: October 08, 1996 to November 06, 1996 location: N: -63.454 S: -77.9638 W: 168.9967 E: -170.5822 project/cruise: AESOPS/NBP-96-4A - Ross Sea Process 1 Cruise ship: R/V Nathaniel B. Palmer Sampling Methodology PI-Note: The CTD transmissometer, fluorometer, light scattering and PAR measurements are currently being calibrated by other investigators AESOPS Investigators, Please note: Begin and end parameters for time, latitude and longitude are provided in the core CTD and Bottle data. Investigators submitting data related to CTD/Bottle casts are urged to use the single lat/lon entry from the Chief Scientist's event log.

NBP-97-03

Website
Platform
RVIB Nathaniel B. Palmer
Report
Start Date
1997-04-04
End Date
1997-05-11
Description
Ross Sea Process Study 3

Methods & Sampling
PI: John Morrison of: North Carolina State University dataset: Processed CTD data from TM casts dates: April 09, 1997 to April 24, 1997 location: N: -67.6378 S: -77.9962 W: 169.0144 E: -176.0121 project/cruise: AESOPS/NBP-97-3 - Ross Sea Process Cruise 3 ship: R/V Nathaniel B. Palmer Sampling Methodology PI-Note: The CTD transmissometer, fluorometer, light scattering and PAR measurements are currently being calibrated by other investigators AESOPS Investigators, Please note: Begin and end parameters for time, latitude and longitude are provided in the core CTD and Bottle data. Investigators submitting data related to CTD/Bottle casts are urged to use the single lat/lon entry from the Chief Scientist's event log.

NBP-97-08

Website
Platform
RVIB Nathaniel B. Palmer
Report
Start Date
1997-11-05
End Date
1997-12-13
Description
Ross Sea Process Study 4 SeaWiFS transmits images to U.S. JGOFS scientists aboard the Palmer, for first time on November 23, 1997.

Methods & Sampling
PI: John Morrison of: North Carolina State University dataset: Processed CTD data from TM casts dates: November 14, 1997 to December 11, 1997 location: N: -71.4372 S: -76.6287 W: 168.9257 E: -177.9637 project/cruise: AESOPS/NBP-97-8 - Ross Sea Process Cruise 4 ship: R/V Nathaniel B. Palmer Sampling Methodology PI-Note: The CTD transmissometer, fluorometer, light scattering and PAR measurements are currently being calibrated by other investigators AESOPS Investigators, Please note: Begin and end parameters for time, latitude and longitude are provided in the core CTD and Bottle data. Investigators submitting data related to CTD/Bottle casts are urged to use the single lat/lon entry from the Chief Scientist's event log.

KIWI6

Website
Platform
R/V Roger Revelle
Report
Start Date
1997-10-20
End Date
1997-11-24
Description
Polar Front Survey I

Methods & Sampling
PI: John Morrison of: North Carolina State University dataset: Processed CTD data from TM casts dates: October 24, 1997 to November 04, 1997 location: N: -57 S: -62.3658 W: -170.0765 E: -168.9993 project/cruise: AESOPS/KIWI06 - APFZ Polar Front Survey Cruise 1 ship: R/V Roger Revelle Sampling Methodology PI-Note: The CTD transmissometer, fluorometer, light scattering and PAR measurements are currently being calibrated by other investigators AESOPS Investigators, Please note: Begin and end parameters for time, latitude and longitude are provided in the core CTD and Bottle data. Investigators submitting data related to CTD/Bottle casts are urged to use the single lat/lon entry from the Chief Scientist's event log.

KIWI8

Website
Platform
R/V Roger Revelle
Report
Start Date
1998-01-08
End Date
1998-02-08
Description
Polar Front Survey II

Methods & Sampling
PI: John Morrison of: North Carolina State University dataset: Processed CTD data from TM casts dates: January 16, 1998 to January 28, 1998 location: N: -60 S: -67.7842 W: -170.1283 E: -170.1 project/cruise: AESOPS/KIWI08 - APFZ Polar Front Survey Cruise 2 ship: R/V Roger Revelle Sampling Methodology Beware! PI-Note All of the casts made with the TM Rosette CTD were mostly within the high salinity gradient surface region. Because of the slow time constant response of the SeaCat CTD, the conductivity data are quite noisy. No effort has been made to clean up this data as it would basically have made the profile worthless. Therefore, the TM Rosette CTD data reported here has been calibrated for conductivity difference between the bottles, but otherwise are "raw" data which might be at least of some use in identifying the conductivity(salinity) gradients in the upper layer. AESOPS Investigators, Please note: Begin and end parameters for time, latitude and longitude are provided in the core CTD and Bottle data. Investigators submitting data related to CTD/Bottle casts are urged to use the single lat/lon entry from the Chief Scientist's event log.

KIWI9

Website
Platform
R/V Roger Revelle
Report
Start Date
1998-02-13
End Date
1998-03-19
Description
Polar Front Process II

Methods & Sampling
PI: John Morrison of: North Carolina State University dataset: Processed CTD data from TM casts dates: February 18, 1998 to March 14, 1998 location: N: -54.3333 S: -71.3072 W: -173.3333 E: -165.9132 project/cruise: AESOPS/KIWI09 - APFZ Polar Front Process Cruise 2 ship: R/V Roger Revelle Sampling Methodology Beware! PI-Note All of the casts made with the TM Rosette CTD were mostly within the high salinity gradient surface region. Because of the slow time constant response of the SeaCat CTD, the conductivity data are quite noisy. No effort has been made to clean up this data as it would basically have made the profile worthless. Therefore, the TM Rosette CTD data reported here has been calibrated for conductivity difference between the bottles, but otherwise are "raw" data which might be at least of some use in identifying the conductivity(salinity) gradients in the upper layer. AESOPS Investigators, Please note: Begin and end parameters for time, latitude and longitude are provided in the core CTD and Bottle data. Investigators submitting data related to CTD/Bottle casts are urged to use the single lat/lon entry from the Chief Scientist's event log.


[ table of contents | back to top ]

Project Information

U.S. JGOFS Antarctic Environment and Southern Ocean Process Study (AESOPS)


Coverage: Southern Ocean, Ross Sea


The U.S. Southern Ocean JGOFS program, called Antarctic Environment and Southern Ocean Process Study (AESOPS), began in August 1996 and continued through March 1998. The U.S. JGOFS AESOPS program focused on two regions in the Southern Ocean: an east/west section of the Ross-Sea continental shelf along 76.5°S, and a second north/south section of the Southern Ocean spanning the Antarctic Circumpolar Current (ACC) at ~170°W (identified as the Polar Front). The science program, coordinated by Antarctic Support Associates (ASA), comprised eleven cruises using the R.V.I.B Nathaniel B. Palmer and R/V Roger Revelle as observational platforms and for deployment and recovery of instrumented moorings and sediment-trap arrays. The Ross-Sea region was occupied on six occasions and the Polar Front five times. Mapping data were obtained from SeaSoar, ADCP, and bathymetric systems. Satellite coverage was provided by the NASA SeaWiFS and the NOAA/NASA Pathfinder programs.



[ table of contents | back to top ]

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).



[ table of contents | back to top ]