N: 21.26 S: 5.06 E: -118.32 W: -157.88
Description
The 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. Part of the Argo global network of autonomous, self-reporting samplers, Argo floats drift horizontally and move vertically through the water column generally on 10 day cycles, collecting high-quality temperature, conductivity and salinity depth (CTD) profiles from the upper 2000m. Twenty five floats were deployed during SPURS-2 within the campaign spatial domain and time period, yielding approximately 1,893 profiles. These were standard Argo floats with the addition of acoustic rain gauges (PAL) in some cases. SPURS-2 ARGO data files are organized per float and profile with the vertical conductivity, salinity, temperature, pressure, depth observations per the netCDF ARGO file specification with some augmented global metadata attributes.
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Variables
The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.
For questions on a specific variable, please use the Earthdata Forum.
| Name Sort descending | Description | Units | Data Type | Fill Value | Valid Range | Scale Factor | Offset |
|---|---|---|---|---|---|---|---|
| PROFILE_TEMP_QC | Global quality flag of TEMP profile | N/A | string | N/A | N/A | 1 | N/A |
| PROJECT_NAME | Name of the project | N/A | string | N/A | N/A | 1 | N/A |
| PSAL | Practical salinity | psu | float | 99999 | 2 to 41 | 1 | N/A |
| PSAL_ADJUSTED | Practical salinity | psu | float | 99999 | 2 to 41 | 1 | N/A |
| PSAL_ADJUSTED_ERROR | Contains the error on the adjusted values as determined by the delayed mode QC process | psu | float | 99999 | N/A | 1 | N/A |
| PSAL_ADJUSTED_QC | quality flag | N/A | string | N/A | N/A | 1 | N/A |
| PSAL_QC | quality flag | N/A | string | N/A | N/A | 1 | N/A |
| REFERENCE_DATE_TIME | Date of reference for Julian days | N/A | string | N/A | N/A | 1 | N/A |
| SCIENTIFIC_CALIB_COEFFICIENT | Calibration coefficients for this equation | N/A | string | N/A | N/A | 1 | N/A |
| SCIENTIFIC_CALIB_COMMENT | Comment applying to this parameter calibration | N/A | string | N/A | N/A | 1 | N/A |
| SCIENTIFIC_CALIB_DATE | Date of calibration | N/A | string | N/A | N/A | 1 | N/A |
| SCIENTIFIC_CALIB_EQUATION | Calibration equation for this parameter | N/A | string | N/A | N/A | 1 | N/A |
| STATION_PARAMETERS | List of available parameters for the station | N/A | string | N/A | N/A | 1 | N/A |
| TEMP | Sea temperature in-situ ITS-90 scale | degree_Celsius | float | 99999 | -2.5 to 40 | 1 | N/A |
| TEMP_ADJUSTED | Sea temperature in-situ ITS-90 scale | degree_Celsius | float | 99999 | -2.5 to 40 | 1 | N/A |
| TEMP_ADJUSTED_ERROR | Contains the error on the adjusted values as determined by the delayed mode QC process | degree_Celsius | float | 99999 | N/A | 1 | N/A |
| TEMP_ADJUSTED_QC | quality flag | N/A | string | N/A | N/A | 1 | N/A |
| TEMP_QC | quality flag | N/A | string | N/A | N/A | 1 | N/A |
| VERTICAL_SAMPLING_SCHEME | Vertical sampling scheme | N/A | string | N/A | N/A | 1 | N/A |
| WMO_INST_TYPE | Coded instrument type | N/A | string | N/A | N/A | 1 | N/A |