| Contributors | Affiliation | Role |
|---|---|---|
| Murray, James W. | University of Washington (UW) | Principal Investigator |
| Chandler, Cynthia L. | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
Final version bottle cast data
See Platform deployments for cruise specific documentation
| File |
|---|
bot_TT007.csv (Comma Separated Values (.csv), 277.08 KB) MD5:c267316bd052702cd94d3141492736ef version Jul 5, 1995 Jim Murray Thomas Thompson cruise TT007 Basic bottle cast measurements (depth, temperature, salinity, oxygen, density, potental temp., etc.). NOTE: J. Murray has flagged the CTD up cast, bottle trip variables (Marker temperature and Marker salinity) as being suspect and should not be used. Selected down cast CTD temperatures and salinities replace these variables. However, if there is interest in the marker temperatures and salinities a file containing these variables is available from the data management office. qflag = quality flag - J. Murray identifies stations with a * as those having problems with the data reported at that level. (mis-trips, suspect salinity, etc). See Murray documentation under 'Documentation' link. |
bot_TT008.csv (Comma Separated Values (.csv), 71.95 KB) MD5:720a46792a1258e79a5e5b974f248575 version October 17, 2002 (original version June 1, 1994) Jim Murray Thomas Thompson cruise TT008 Basic bottle cast measurements (depth, temperature, salinity, oxygen, density, potental temp., etc.). NOTE: J. Murray has flagged the CTD up cast, bottle trip variables (Marker temperature and Marker salinity) as being suspect and should not be used. Selected down cast CTD temperatures and salinities replace these variables. However, if there is interest in the marker temperatures and salinities a file containing these variables is available from the data management office. event = event/operation number from event log sta = station number from event log. qflag = quality flag - J. Murray identifies stations with a * as those having problems with the data reported at that level. (mis-trips, suspect salinity, etc). See Murray documentation under 'Documentation' link. cast = ctd cast number from event log bot = ctd rosette bottle number depth = sample depth reported as meters, units = meters press = sample depth reported as pressure, units = decibars pressbin = the one decibar bin averaged pressure interval from which the following CTD variables were extracted ctdtemp = ctd temperature, units = degress centigrade ctdsal = ctd salinity, parts/thousand ctdsig_t = ctd sigma-t botox = bottle oxygen, units = milliliters/liter botsal = bottle salinity, units = parts/thousand ctdpotemp = ctd potental temperature, units = degrees centigrade ctdsig_th = ctd potental density, units = kilograms/cubic meter nd = missing data |
bot_TT011.csv (Comma Separated Values (.csv), 310.28 KB) MD5:ece9a3eac659b8698ffe5011a9ff7e14 version June 2, 1994 Jim Murray Thomas Thompson cruise TT011 Basic bottle cast measurements (depth, temperature, salinity, oxygen, density, potental temp., etc.). NOTE: J. Murray has flagged the CTD up cast, bottle trip variables (Marker temperature and Marker salinity) as being suspect and should not be used. Selected down cast CTD temperatures and salinities replace these variables. However, if there is interest in the marker temperatures and salinities a file containing these variables is available from the data management office. event = event/operation number from event log sta = station number from event log. qflag = quality flag - J. Murray identifies stations with a * as those having problems with the data reported at that level. (mis-trips, suspect salinity, etc). See Murray documentation under 'Documentation' link. cast = ctd cast number from event log bot = ctd rosette bottle number depth = sample depth reported as meters, units = meters press = sample depth reported as pressure, units = decibars pressbin = the one decibar bin averaged pressure interval from which the following CTD variables were extracted ctdtemp = ctd temperature, units = degress centigrade ctdsal = ctd salinity, parts/thousand ctdsig_t = ctd sigma-t botox = bottle oxygen, units = milliliters/liter botsal = bottle salinity, units = parts/thousand ctdpotemp = ctd potental temperature, units = degrees centigrade ctdsig_th = ctd potental density, units = kilograms/cubic meter nd = missing data |
bot_TT012.csv (Comma Separated Values (.csv), 90.44 KB) MD5:bee18dc2b6aedffb3c9cea3673fc6354 version September 5, 2002 (original version June 3, 1994) Jim Murray Thomas Thompson cruise TT012 Basic bottle cast measurements (depth, temperature, salinity, oxygen, density, potental temp., etc.). NOTE: J. Murray has flagged the CTD up cast, bottle trip variables (Marker temperature and Marker salinity) as being suspect and should not be used. Selected down cast CTD temperatures and salinities replace these variables. However, if there is interest in the marker temperatures and salinities a file containing these variables is available from the data management office. IMPORTANT: See NOTE in brief description link regarding cracked conductivity sensor. event = event/operation number from event log sta = station number from event log. Station numbers prefixed with a cast = ctd cast number from event log qflag = set by J. Murray, * identifies problems with the data reported at that level. (mis-trips, suspect salinity, etc). See See Murray documentation under 'Documentation' link. bot = ctd rosette bottle number depth = sample depth reported as meters, units = meters press = sample depth reported as pressure, units = decibars pressbin = the one decibar bin averaged pressure interval from which the following CTD variables were extracted ctdtemp = ctd temperature, units = degress centigrade ctdsal = ctd salinity, parts/thousand ctdsig_t = ctd sigma-t botox = bottle oxygen, units = milliliters/liter botsal = bottle salinity, units = parts/thousand ctdpotemp = ctd potental temperature, units = degrees centigrade ctdsig_th = ctd potental density, units = kilograms/cubic meter nd = missing data DMO QC note (020905): depth was missing for event 10061202; only nominal pressure data was reported; nominal depth was calculated from nominal press and added to this ... |
| Parameter | Description | Units |
| event | event/operation number per event log | |
| sta | station number per event log | |
| cast | CTD cast number | |
| bot | CTD rosette bottle number | |
| depth | sample depth | meters |
| press | sample depth reported as pressure | decibars |
| pressbin | sample depth from bin averaged CTD | decibars |
| ctdtemp | CTD temperature | degrees C |
| ctdsal | CTD salinity (PSS-78) when bottle tripped | dimensionless |
| ctdsig_t | CTD sigma-t | kilograms/cubic meter |
| botox | bottle oxygen | milliliters/liter |
| botsal | bottle salinity (Autosal; PSU) | dimensionless |
| ctdpotemp | CTD potental temperature | degrees centigrade |
| ctdsig_th | CTD potental density | kilograms/cubic meter |
| qflag | quality flag, good (-) or suspect (*) stations with a * have problems with the data reported for that bottle. (mis-trips, suspect salts, etc). See PI-Notes for details. |
| Dataset-specific Instrument Name | Niskin Bottle |
| Generic Instrument Name | Niskin bottle |
| Dataset-specific Description | CTD clean rosette (Niskin) bottles were used to collect water samples. |
| 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. |
| Website | |
| Platform | R/V Thomas G. Thompson |
| Start Date | 1992-01-30 |
| End Date | 1992-03-13 |
| Description | Purpose: Spring Survey Cruise; 12°N-12°S at 140°W
TT007 was one of five cruises conducted in 1992 in support of the U.S. Equatorial Pacific (EqPac) Process Study. The five EqPac cruises aboard R/V Thomas G. Thompson included two repeat meridional sections (12°N - 12°S), 2 equatorial surveys, and a benthic survey (all at 140° W). The scientific objectives of this study were to observe the processes in the Equatorial Pacific controlling the fluxes of carbon and related elements between the atmosphere, euphotic zone, and deep ocean. As luck would have it, the survey window coincided with an El Nino event. A bonus for the research team. Methods & Sampling PI: James Murray of: University of Washington dataset: Final version bottle cast data dates: February 03, 1992 to March 09, 1992 location: N: 12.0674 S: -12.2083 W: -140.7692 E: -134.3131 project/cruise: EQPAC/TT007 - Spring Survey ship: Thomas Thompson PI-Notes on Quality |
| Website | |
| Platform | R/V Thomas G. Thompson |
| Start Date | 1992-03-19 |
| End Date | 1992-04-15 |
| Description | Purpose: Spring Time Series; Equator, 140°W
TT008 was one of five cruises conducted in 1992 in support of the U.S. Equatorial Pacific (EqPac) Process Study. The five EqPac cruises aboard R/V Thomas G. Thompson included two repeat meridional sections (12°N - 12°S), 2 equatorial surveys, and a benthic survey (all at 140° W). The scientific objectives of this study were to observe the processes in the Equatorial Pacific controlling the fluxes of carbon and related elements between the atmosphere, euphotic zone, and deep ocean. As luck would have it, the survey window coincided with an El Nino event. A bonus for the research team. Methods & Sampling PI: James Murray of: University of Washington dataset: Final version bottle cast data dates: March 19, 1992 to April 14, 1992 location: N: 9.0905 S: -8.7858 W: -143.0025 E: -139.8528 project/cruise: EQPAC/TT008 - Spring Time Series ship: Thomas Thompson PI-Notes on Quality |
| Website | |
| Platform | R/V Thomas G. Thompson |
| Start Date | 1992-08-05 |
| End Date | 1992-09-18 |
| Description | Purpose: Fall Survey; 12°N-12°S at 140°W
TT011 was one of five cruises conducted in 1992 in support of the U.S. Equatorial Pacific (EqPac) Process Study. The five EqPac cruises aboard R/V Thomas G. Thompson included two repeat meridional sections (12°N - 12°S), 2 equatorial surveys, and a benthic survey (all at 140° W). The scientific objectives of this study were to observe the processes in the Equatorial Pacific controlling the fluxes of carbon and related elements between the atmosphere, euphotic zone, and deep ocean. As luck would have it, the survey window coincided with an El Nino event. A bonus for the research team. Methods & Sampling PI: James Murray of: University of Washington dataset: Final version bottle cast data dates: August 10, 1992 to September 15, 1992 location: N: 12.0317 S: -11.9767 W: -141.4467 E: -134.9117 project/cruise: EQPAC/TT011 - Fall Survey ship: Thomas Thompson PI-Notes on Quality |
| Website | |
| Platform | R/V Thomas G. Thompson |
| Start Date | 1992-09-24 |
| End Date | 1992-10-21 |
| Description | Purpose: Fall Time Series; Equator, 140°W
TT012 was one of five cruises conducted in 1992 in support of the U.S. Equatorial Pacific (EqPac) Process Study. The five EqPac cruises aboard R/V Thomas G. Thompson included two repeat meridional sections (12°N - 12°S), 2 equatorial surveys, and a benthic survey (all at 140° W). The scientific objectives of this study were to observe the processes in the Equatorial Pacific controlling the fluxes of carbon and related elements between the atmosphere, euphotic zone, and deep ocean. As luck would have it, the survey window coincided with an El Nino event. A bonus for the research team. Methods & Sampling PI: James Murray of: University of Washington dataset: Final version bottle cast data dates: September 25, 1992 to October 21, 1992 location: N: 0.079 S: -12 W: -145.489 E: -139.8587 project/cruise: EQPAC/TT012 - Fall Time Series ship: Thomas Thompson PI-Notes on Quality |
The U.S. EqPac process study consisted of repeat meridional sections (12°N -12°S) across the equator in the central and eastern equatorial Pacific from 95°W to 170°W during 1992. The major scientific program was focused at 140° W consisting of two meridional surveys, two equatorial surveys, and a benthic survey aboard the R/V Thomas Thompson. Long-term deployments of current meter and sediment trap arrays augmented the survey cruises. NOAA conducted boreal spring and fall sections east and west of 140°W from the R/V Baldridge and R/V Discoverer. Meteorological and sea surface observations were obtained from NOAA's in place TOGA-TAO buoy network.
The scientific objectives of this study were to determine the fluxes of carbon and related elements, and the processes controlling these fluxes between the Equatorial Pacific euphotic zone and the atmosphere and deep ocean. A broad overview of the program at the 140°W site is given by Murray et al. (Oceanography, 5: 134-142, 1992). A full description of the Equatorial Pacific Process Study, including the international context and the scientific results, appears in a series of Deep-Sea Research Part II special volumes:
Topical Studies in Oceanography, A U.S. JGOFS Process Study in the Equatorial Pacific (1995), Deep-Sea Research Part II, Volume 42, No. 2/3.
Topical Studies in Oceanography, A U.S. JGOFS Process Study in the Equatorial Pacific. Part 2 (1996), Deep-Sea Research Part II, Volume 43, No. 4/6.
Topical Studies in Oceanography, A U.S. JGOFS Process Study in the Equatorial Pacific (1997), Deep-Sea Research Part II, Volume 44, No. 9/10.
Topical Studies in Oceanography, The Equatorial Pacific JGOFS Synthesis (2002), Deep-Sea Research Part II, Volume 49, Nos. 13/14.
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).