SPURS-2 Towed surface salinity profile (SSP) data for the E. Tropical Pacific R/V Revelle cruises
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Short NameSPURS2_SSP
DescriptionThe SPURS (Salinity Processes in the Upper Ocean Regional Study) project is a NASA-funded oceanographic process study and associated field program that aim to elucidate key mechanisms responsible for near-surface salinity variations in the oceans. The project is comprised of two field campaigns and a series of cruises in regions of the Atlantic and Pacific Oceans exhibiting salinity extremes. SPURS employs a suite of state-of-the-art in-situ sampling technologies that, combined with remotely sensed salinity fields from the Aquarius/SAC-D, SMAP and SMOS satellites, provide a detailed characterization of salinity structure over a continuum of spatio-temporal scales. The SPURS-2 campaign involved two month-long cruises by the R/V Revelle in August 2016 and October 2017 combined with complementary sampling on a more continuous basis over this period by the schooner Lady Amber. Focused around a central mooring located near 10N,125W, the objective of SPURS-2 was to study the dynamics of the rainfall-dominated surface ocean at the western edge of the eastern Pacific fresh pool subject to high seasonal variability and strong zonal flows associated with the North Equatorial Current and Countercurrent. The towed Surface Salinity Profiler (SSP) platform is a converted paddleboard with a keel and surfboard outrigger that is tethered to the ship and skims the sea surface beyond the ships wake. Below the paddleboard are salinity and temperature sensors at depths of 10, 30, 50 and 100cm, and microstructure sensors that measure turbulence. The SSP was deployed 19 times throughout the first SPURS-2 cruise, totaling over 200 hours of measurements, and a further 15 times during the 2017 cruise. SSP deployment is most informative when there is a rain event leading to near-surface ocean stratification. The SSP then measures how the ocean changes over the periods before, during, and after rain, and how rainwater mixes into the ocean during recovery. All SSP data files are in netCDF format with standards compliant metadata.
Dataset TypeOPEN
Processing Level2
CoverageRegion: Eastern Tropical Pacific
Northernmost Latitude: 16.502 degrees
Southernmost Latitude: 6.546 degrees
Westernmost Longitude: -140.969 degrees
Easternmost Longitude: -123.203 degrees
Time Span: 2016-Aug-27 to 2017-Nov-11
Granule Time Span: 2016-Aug-27 to 2017-Nov-11
ResolutionSpatial Resolution: 0 km (Along) x 0 km (Across)
ProjectionType: WGS84
Ellipsoid: WGS84
Latency0 hours
Swath Width0.001 km
Sample Frequency-
Temporal Repeat (Nominal)1 Day
Temporal Repeat (Min)-
Temporal Repeat (Max)-
Name: SPURS-I University of Washington Seaglider (Seaglider)
Orbit Period: 0 minutes
Inclination Angle: 0 degrees
Ascending Node: 1970-Jan-01 00:00:00
Name: Conductivity, Temperature, Depth (CTD)
Swath Width: 0.001 km
Description: Saildrone Teledyne CTD (2632)

ProjectNASA Salinity Processes in the Upper Ocean Regional Study (SPURS)
Data ProviderCreator: Drushka, K., E. Thompson and W. Asher
Release Place: APL, University of Washington, 1013 NE 40th St, Seattle, WA 98105, USA
Release Date: 2019-Oct-24
Resource: http://podaac.jpl.nasa.gov/SPURS
Keyword(s)SSP, surface salinity profiler, CTD, trajectory, microstructure, Salinity, Conductivity, Temperature, Depth, Pressure, Upper Ocean, SPURS2, Eastern Tropical Pacific, ITCZ region, Cruises, Revelle, insitu, SPURS, oceanographic campaign
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Project Materials
SPURS-2 Cruise Documentation Packagehttps://podaac-tools.jpl.nasa.gov/drive/files/allData/insitu/L2/spurs2/docs/CruiseReports/
Cruise Reports
SPURS-2 Data Documentation Packagehttps://podaac-tools.jpl.nasa.gov/drive/files/allData/insitu/L2/spurs2/docs/DataDocumentation/
Data Submission Report, Instrument Calibration Report, etc
Additional Sites
PO.DAAC SPURS Mission pagehttp://podaac.jpl.nasa.gov/spurs
Field Campaign and Instrument Overview
SPURS Project Websitehttp://spurs.jpl.nasa.gov/
Project Website for SPURS
Citation Drushka, K., E. Thompson and W. Asher. 2019. SPURS-2 Towed surface salinity profile (SSP) data for the E. Tropical Pacific R/V Revelle cruises. Ver. 1.0. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/SPUR2-SSP00.

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For more information see Data Citations and Acknowledgments.

Journal Reference Drushka, K., W.E. Asher, A.T. Jessup, E.J. Thompson, S. Iyer, and D. Clark. 2019. Capturing fresh layers with the surface salinity profiler. Oceanography 32(2):76-85.