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Description

This dataset provides the conductivity, temperature and depth (CTD) measurements from the fixed-depth CTD sensors mounted on a full-depth mooring deployed by the SWOT prelaunch field campaign. The campaign was designed to test the performance of several instruments/platforms in meeting the SWOT Calibration/Validation (CalVal) requirement. It was conducted near the SWOT CalVal crossover location, about 300 kilometers west of Monterey, California between September, 2019 and January, 2020. These fixed-depth CTDs cover the full depth from the ocean surface to the bottom. The surface buoy is equipped with a Global Positioning System (GPS) https://doi.org/10.5067/SWTPR-GPS01. There is also an adjacent bottom pressure recorder https://doi.org/10.5067/SWTPR-BPR01. The campaign also deployed another two CTD moorings, a slocum glider, one bottom pressure recorder and one Pressure Inverted Echo Sounder. Details can be found in the user guide and the journal reference given in the documentation section.

Product Summary

Platforms
MOORINGS
Instruments
CTD
Spatial Extent

N: 36.2 S: 35.8 E: -125 W: -125.2

Geographic Region
PACIFIC OCEAN
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2019-09-04 to 2020-01-19
Data Partner
Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, NASA (NASA/JPL/PODAAC)
Concept ID
C2235488579-POCLOUD
Data State
COMPLETE
Number of Files/Granules
1
Processing Level
2
Published
Science Keywords
Ocean Temperature ,
Salinity/Density ,
Ocean Pressure

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

SWOT. (2022). SWOT 2019-2020 Prelaunch Oceanography Field Campaign WHOI/NOAA Moored Fixed-Depth CTDs [Data set]. NASA Physical Oceanography Distributed Active Archive Center. https://doi.org/10.5067/SWTPR-CTD11 Date Accessed: 2025-12-15

Documents

Variables

Variables are a set of physical properties whose values determine the characteristics or behavior of something. For example, temperature and pressure are variables of the atmosphere. Parameters and variables can be used interchangeably. Variable level attributes provide individual information for each variable.

The Name in this table is the variable name. Fill value indicates missing or undefined data points in a variable. Valid range is the range of values the variable can store. Scale factor is used to increase or decrease the size of an object and can be used to correct for distortion. For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor
CNDC CNDC mS cm-1 float N/A 0 to 90 1
CNDC_QC This quality control flag describes the data that link here through the ancillary_variables attribute. N/A byte N/A 0 to 8 1
DEPTH Time-varying depth of each instrument, estimated from pressure data. m float N/A 0 to 12000 1
DEPTH_NOMINAL These are nominal values. Use PRES to derive time-varying depths of instruments, as the mooring may tilt in ambient currents. m double N/A 0 to 5000 1
LATITUDE This is the nominal position. The mooring had a watch circle of several km around this position. degrees_north double N/A -90 to 90 1
LONGITUDE This is the nominal position. The mooring had a watch circle of several km around this position. degrees_east double N/A -180 to 180 1
PRES Sea surface is zero, i.e. air pressure is removed. dbar float N/A 0 to 12000 1
PRES_QC This quality control flag describes the data that link here through the ancillary_variables attribute. N/A byte N/A 0 to 8 1
PSAL Given on PSS-78 scale. 1 float N/A 0 to 45 1
PSAL_QC This quality control flag describes the data that link here through the ancillary_variables attribute. N/A byte N/A 0 to 8 1
TEMP Given on ITS-90 scale. degree_Celsius float N/A -2 to 40 1
TEMP_QC This quality control flag describes the data that link here through the ancillary_variables attribute. N/A byte N/A 0 to 8 1
TIME TIME days since 19500101T000000Z double N/A 0 to 90000 1
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