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CTD data from the Labrador Sea experiment, R/V Knorr cruise KN156, from 1998-01-25 to 1998-02-08 (NCEI Accession 9800051)
These data were received courtesy of Dr. Eric D'Asaro, Univ. of Washington/Applied Physics Lab and result from the recent Labrador Sea experiment, R/V Knorr cruise KN156. Data sets transmitted include 33 "complete" CTD stations, both up and down casts, unaveraged, 32 accompanying oxygen and salinity "bottle" data files and 23 CTD pressure and oxygen data calibrated to bottles. In addition, there are 5 accompanying documentation or informational files including a DDF form. All files transmitted are ASCII or ASCII text.
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Physical and chemical profile data collected from CTD in the R/V Knorr cruise KN200-2 during March 2011 in the North Atlantic Ocean (NCEI Accession 0100287)
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The dataset consists of 100 CTD casts in the region north of Flemish Cap. Some casts cover the full water column, while others only cover the upper 1000 db. The CTD casts were obtained with a SeaBird SBE911+ system, measuring temperature (2 sensors), conductivity (2 sensors), pressure, beam transmission, oxygen (plumbed in series with the primary T/C sensor pair), chlorophyll fluorescence, and turbidity. All sensors were sampled at 24 Hz. The data were processed using the SeaBird data processing software suite, SBEDataProcessing-Win32. A low pass filter, with time constant of 0.15 s, was applied to the pressure record. To account for the transit time between the temperature and conductivity sensors, the conductivity measurements were aligned with the temperature measurements using empirically determined time delays. The primary conductivity was delayed by 0.011 s relative to pressure (this is in addition to the advance of 0.073 s which is performed by the SeaBird deckbox during data acquisition, thus resulting in a net advance of 0.062 s). The secondary conductivity was advanced by 0.050 s. The oxygen voltage was advanced by 4 s relative to pressure. A correction for conductivity cell thermal mass effects was applied to both conductivity channels using the parameters recommended by SeaBird (alpha=0.03, 1/beta=7.0). The temperatures, conductivities, and oxygen voltage were then median filtered using a 7-scan window. A loop edit step was then applied, whereby portions of the cast in which the pressure was not changing sufficiently fast (0.2 dbar/s) were removed. This was followed by computation of salinity, potential temperature, potential density, sound velocity, geopotential anomaly, and oxygen concentration. Finally, the data from the downcast were averaged into 1 dbar bins. Further details of the CTD data processing can be found in the header portion of the individual cast files. The final data files contain raw sensor values (1 dbar bin averages) plus a number of derived variables (e.g., potential temperature, salinity, sigma-theta, oxygen). A full list of the output variables is contained in the header portion of the cast files. The casts were visually examined to determine the quality of the data from the 2 separate sensor suites (primary and secondary). A header line was placed in each file indicating the preferred sensor pair (PRIMARY or SECONDARY) if one was bad or whether both were of equal quality (BOTH GOOD).
PRESSURE - WATER and Other Data from KNORR From NW Atlantic (limit-40 W) from 1981-04-01 to 1981-10-19 (NCEI Accession 8600274)
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This data set contains CTD data from The Transient Tracers in the Ocean-North Atlantic study collected from April 1 to October 19, 1981. the data were collected on the RV Knorr by the Physical and Chemical Oceanographic data facility, Scripps. The submitters were R.T. Williams, F. Delahoyde and K.M. Sanborn. These data cover legs 1-7 of this study. the data are in non-NODC format. There are seven tapes containing this data set. The tapes have been assigned the following reference numbers: L00522, L00523, L00524, L00525, L00529, L00530, L00531. These data are from originator's tape C and include stations 1-250.
Carbon dioxide, hydrographic and chemical data collected from profile discrete samples during the R/V Knorr cruise KN (EXPOCODE 316N20061001) in Davis Strait from 2006-10-01 to 2006-10-04 (NCEI Accession 0173247)
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This dataset includes profile discrete measurements of CTD temperature, CTD salinity, CTD oxygen, nutrients, dissolved inorganic carbon, total alkalinity other measurements obtained during the R/V Knorr cruise KN (EXPOCODE 316N20061001) in Davis Strait from 2006-10-01 to 2006-10-04.
Carbon dioxide, hydrographic and chemical data collected from profile discrete samples during the R/V Knorr cruise (EXPOCODE 316N20040922) in Davis Strait from 2004-09-22 to 2004-10-04 (NCEI Accession 0173089)
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This dataset includes profile discrete measurements of CTD temperature, CTD salinity, CTD oxygen, nutrients, dissolved inorganic carbon, total alkalinity other measurements obtained during the R/V Knorr cruise (EXPOCODE 316N20040922) in Davis Strait from 2004-09-22 to 2004-10-04.
Carbon dioxide, hydrographic and chemical data collected from profile discrete samples during the R/V Knorr cruise (EXPOCODE 316N20100804) in Davis Strait from 2010-08-04 to 2010-09-29 (NCEI Accession 0173041)
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This dataset includes profile discrete measurements of CTD temperature, CTD salinity, CTD oxygen, nutrients, dissolved inorganic carbon, total alkalinity other measurements obtained during the R/V Knorr cruise (EXPOCODE 316N20100804) in Davis Strait from 2010-08-04 to 2010-09-29.
Carbon dioxide, hydrographic and chemical data collected from profile discrete samples during the R/V Knorr cruise (EXPOCODE 316N20080901) in Davis Strait from 2008-09-01 to 2008-09-21 (NCEI Accession 0173287)
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This dataset includes profile discrete measurements of CTD temperature, CTD salinity, CTD oxygen, nutrients, dissolved inorganic carbon, total alkalinity other measurements obtained during the R/V Knorr cruise (EXPOCODE 316N20080901) in Davis Strait from 2008-09-01 to 2008-09-21.
Carbon dioxide, hydrographic and chemical data collected from profile discrete samples during the R/V Knorr cruise (EXPOCODE 316N20111002) in Davis Strait from 2011-10-02 to 2011-10-21 (NCEI Accession 0173308)
공공데이터포털
This dataset includes profile discrete measurements of CTD temperature, CTD salinity, CTD oxygen, nutrients, dissolved inorganic carbon, total alkalinity other measurements obtained during the R/V Knorr cruise (EXPOCODE 316N20111002) in Davis Strait from 2011-10-02 to 2011-10-21.
Carbon dioxide, hydrographic and chemical data collected from profile discrete samples during the R/V Knorr cruise (EXPOCODE 316N20071003) in Davis Strait from 2007-10-03 to 2007-10-21 (NCEI Accession 0173248)
공공데이터포털
This dataset includes profile discrete measurements of CTD temperature, CTD salinity, CTD oxygen, nutrients, dissolved inorganic carbon, total alkalinity other measurements obtained during the R/V Knorr cruise (EXPOCODE 316N20071003) in Davis Strait from 2007-10-03 to 2007-10-21.
Carbon dioxide, hydrographic and chemical data collected from profile discrete samples during the R/V Knorr cruise (EXPOCODE 316N20091006) in Davis Strait from 2009-10-06 to 2009-10-28 (NCEI Accession 0173307)
공공데이터포털
This dataset includes profile discrete measurements of CTD temperature, CTD salinity, nutrients, dissolved inorganic carbon, total alkalinity other measurements obtained during the R/V Knorr cruise (EXPOCODE 316N20091006) in Davis Strait from 2009-10-06 to 2009-10-28.
CTD and other data from ALPHA HELIX and OSHORO MARU in the Bering Sea and Gulf of Alaska from 1983-07-01 to 1983-10-29 (NCEI Accession 8300169)
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This dataset includes data which was collected on the R/V ALPHA HELIX cruise HX53 between 10/4/83 - 10/5/83 by Dr. Henrichs of the Institute of Marine Science. There were a total of 15 stations in the Aialik Bay & Resurrection Bay area. This dataset also includes data which was collected on the R/V Alpha Helix cruise HX54 between 10/24/83 - 10/29/83 by Dr. Royer of the Institute of Marine Science. There were a total of 110 stations in the Gulf of Alaska area. This dataset also includes data which was collected on the R/V OSHORO MARU cruise OSM95 between 6/30/83 - 7/9/83 by Ray Hadley of the Institute of Marine Science. There were a total of 14 stations in the Pacific Ocean. Finally, this dataset includes data which was collected on the R/V ALPHA HELIX cruise HX49 between 8/15/83 - 8/21/83 by Dr. McRoy of the Institute of Marine Science. There were a total of 50 stations in the Bering Sea & Chukchi Sea area. Data has been processed by NODC to the NODC standard High-Resolution CTD/STD (F022) format. The F022 format contains high-resolution data collected using CTD (conductivity-temperature-depth) and STD (salinity-temperature-depth) instruments. As they are lowered and raised in the oceans, these electronic devices provide nearly continuous profiles of temperature, salinity, and other parameters. Data values may be subject to averaging or filtering or obtained by interpolation and may be reported at depth intervals as fine as 1m. Cruise and instrument information, position, date, time and sampling interval are reported for each station. Environmental data at the time of the cast (meteorological and sea surface conditions) may also be reported. The data record comprises values of temperature, salinity or conductivity, density (computed sigma-t), and possibly dissolved oxygen or transmissivity at specified depth or pressure levels. Data may be reported at either equally or unequally spaced depth or pressure intervals. A text record is available for comments.