SPURS-2 Neutrally buoyant float data for the E. Tropical Pacific field campaign
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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. Neutrally buoyant floats (also known as Mixed Layer Floats - MLF) drift and move through the water column providing continuous CTD temperature and salinity profiles and GPS surface position location data. One float was deployed in SPURS-2 during the first Revelle cruise in August 2016 and recovered in December 2016 after 3.5 months about 1800 km east of the central mooring. The MLF data are provided in netCDF file format with standards compliant metadata.
Dataset TypeOPEN
Processing Level2
CoverageRegion: Eastern Tropical Pacific
Northernmost Latitude: 11.891 degrees
Southernmost Latitude: 7.855 degrees
Westernmost Longitude: -125.015 degrees
Easternmost Longitude: -108.951 degrees
Time Span: 2016-Aug-26 to 2016-Dec-29
Granule Time Span: 2016-Aug-26 to 2016-Dec-29
ResolutionSpatial Resolution: 0 km (Along) x 0 km (Across)
ProjectionType: WGS84
Ellipsoid: WGS84
Latency hours
Swath Width0.001 km
Sample Frequency-
Temporal Repeat (Nominal)1 Day
Temporal Repeat (Min)-
Temporal Repeat (Max)-
Name: SPURS-I University of Washington Neutrally Buoyant Float/Mixed layer float (NeutrallyBuoyantFloat)
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: Andrey Shcherbina
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)Neutrally buoyant float, trajectory profile, Salinity, Pressure, Depth, Temperature, 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 Andrey Shcherbina. 2019. SPURS-2 Neutrally buoyant float data for the E. Tropical Pacific field campaign. Ver. 1.0. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/SPUR2-NBFLT.

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For more information see Data Citations and Acknowledgments.

Journal Reference Shcherbina, A.Y., E.A. D'Asaro, and R.R. Harcourt. 2019. Rain and sun create slippery layers in the Eastern Pacific Fresh Pool. Oceanography 32(2):98 - 107, https://doi.org/10.5670/oceanog.2019.217.