N: 24.203 S: 5.055 E: -119.886 W: -144.874
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. A ship mast meteorological sensor package with an additional set of sophisticated sensors, including a direct covariance flux package was set up on both SPURS-2 Revelle cruises. These provided georeferenced, along-track atmospheric pressure, temperature, humidity, IR/visible radiation, rain, and wind speed and air-sea flux measurements. Resulting data are packaged in netCDF files (one per cruise) with standards compliant metadata.
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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 Sort descending | Description | Units | Data Type | Fill Value | Valid Range | Scale Factor |
|---|---|---|---|---|---|---|
| air_temperature | Air Temperature adjusted to 10m from calibrated WHOI and UConn Air Temperature Sensors on the bow mast | degrees_C | double | N/A | 23.293718 to 28.792595 | 1 |
| air_temperature_at_16p5m | Air Temperature at ~16.5m from calibrated WHOI and UConn Air Temperature Sensors on the bow mast | degrees_C | double | N/A | 23.146612266181 to 28.714516208104 | 1 |
| buoyancy_flux | Bulk Flux according to COARE 3.5 Algorithm | W/m^2 | double | N/A | 1.9724156 to 88.56507 | 1 |
| course_over_ground | Course Over Ground from Ships Data Files | degrees | double | N/A | 0.00067138524102724 to 359.99995236001 | 1 |
| downwelling_IR | Downwelling IR of Pyranometers and Pyrgeometers | W/m^2 | double | N/A | -475.32961071472 to -396.4629463787 | 1 |
| downwelling_solar | Downwelling Solar of Pyranometers and Pyrgeometers | W/m^2 | double | N/A | -1387.7218722792 to 5.253770030174 | 1 |
| eastward_current | Eastward Current from ADCP Measurement | m/s | double | N/A | -0.7015884 to 0.7934512 | 1 |
| evaporation | Evaporation of Optical Rain Gauge | mm | double | N/A | 0.001990289 to 117.55755 | 1 |
| evaporation_rate | Evaporation rate of Optical Rain Gauge | mm/hr | double | N/A | 0.032639924 to 0.5669445 | 1 |
| friction_velocity | Friction Velocity according to COARE 3.5 Algorithm | m/s | double | N/A | 0.026084349 to 0.55036175 | 1 |
| heading | Heading from Ships Data Files | degrees | double | N/A | 1.2337028934417E-7 to 359.99752287315 | 1 |
| latent_heat_flux | Bulk Flux according to COARE 3.5 Algorithm | W/m^2 | double | N/A | 22.084944 to 383.23505 | 1 |
| latitude | Latitude from Ships Data Files | degrees_north | double | N/A | 5.06140075 to 13.4568725 | 1 |
| longitude | Longitude from Ships Data Files | degrees_east | double | N/A | -144.87482775 to -123.37702175 | 1 |
| near_sea_surface_temperature_at_2m | Near Sea Surface Temperature at 2m from USPS | degrees_C | double | N/A | 27.0881681905 to 31.625722453333 | 1 |
| near_sea_surface_temperature_at_3m | Near Sea Surface Temperature at 3m from USPS | degrees_C | double | N/A | 27.083443894342 to 31.250458969566 | 1 |
| near_sea_surface_temperature_at_5cm | Near Surface Sea Temperature at ~5cm from Sea-Snake after callibration with Osspre Sensors | degrees_C | double | N/A | 26.941755972213 to 31.678365972213 | 1 |
| near_sea_surface_temperature_at_5m | Near Sea Surface Temperature at 5m from thermosalinograph | degrees_C | double | N/A | 27.172 to 30.36625 | 1 |
| neutral_wind_speed_relative_to_earth | Neutral Wind Speed relative to Earth adjusted to 10m and neutral stratification computed from ADCP measurements | m/s | double | N/A | 0.14915171736816 to 13.164459188684 | 1 |
| neutral_wind_speed_relative_to_water | Neutral Wind Speed relative to water adjusted to 10m and neutral stratification computed from ADCP measurements | m/s | double | N/A | 0.13963333 to 13.347631 | 1 |
| northward_current | Northward Current from ADCP Measurement | m/s | double | N/A | -0.90819 to 0.83711445 | 1 |
| precipitation | Precipitation of Optical Rain Gauge | mm | double | N/A | 0 to 364.548231222 | 1 |
| precipitation_rate | Precipitation rate of Optical Rain Gauge | mm/hr | double | N/A | 0 to 146.352024 | 1 |
| pressure | Pressure from UConn Barometers on the 03 deck | mbar | double | N/A | 1006.588 to 1014.882 | 1 |
| reflected_solar | Reflected Solar estimated from Payne (1972) | W/m^2 | double | N/A | -0.037886329239507 to 59.860918602709 | 1 |
| relative_humidity_at_2m | Relative Humidity adjusted to 2m reconstructed from Q, aspirated Tair, and P measurements | % | double | N/A | 63.724686 to 99.17463 | 1 |
| relative_humidity_at_10m | Relative Humidity adjusted to 10m reconstructed from Q, aspirated Tair, and P measurements | % | double | N/A | 60.11386 to 99.577705 | 1 |
| relative_humidity_at_16p5m | Relative Humidity at ~16.5m reconstructed from Q, aspirated Tair, and P measurements | % | double | N/A | 59.325812926724 to 99.939601680318 | 1 |
| salinity_at_2m | Salinity at 2m from USPS | 1 | double | N/A | 31.019293884746 to 34.344241881511 | 1 |
| salinity_at_3m | Salinity at 3m from USPS | 1 | double | N/A | 31.715140809269 to 34.341658362463 | 1 |
| salinity_at_5m | Salinity at 5m from thermosalinograph | 1 | double | N/A | 32.14325 to 34.28325 | 1 |
| sea_surface_salinity | Sea surface salinity from the salinity snake | 1 | double | N/A | 30.299182880037 to 34.322401566708 | 1 |
| sea_surface_temperature | Sea Surface Temperature estimated from Tsea minus cool skin | degrees_C | double | N/A | 26.740044 to 31.288486 | 1 |
| sensible_heat_flux | Bulk Flux according to COARE 3.5 Algorithm | W/m^2 | double | N/A | -2.8031752 to 71.41981 | 1 |
| sensible_heat_flux_from_rain | Bulk Flux according to COARE 3.5 Algorithm | W/m^2 | double | N/A | 0 to 656.7095 | 1 |
| specific_humidity_at_2m | Specific Humidity adjusted to 2m computed from four Inter-Calibrated RH/T Sensors | g/kg | double | N/A | 14.242284 to 20.855194 | 1 |
| specific_humidity_at_10m | Specific Humidity adjusted to 10m computed from four Inter-Calibrated RH/T Sensors | g/kg | double | N/A | 13.250005 to 20.54498 | 1 |
| specific_humidity_at_16p5m | Specific Humidity at ~16.5m computed from calibrated UConn and WHOI RH/T Sensors on the bow mast | g/kg | double | N/A | 13.00917836284 to 20.468935259353 | 1 |
| specific_humidity_at_sea_surface | Specific Humidity at Sea Surface computed from SST | g/kg | double | N/A | 21.509087 to 28.166344 | 1 |
| speed_over_ground | Speed Over Ground from Ships Data Files | m/s | double | N/A | 0.0012145060503962 to 7.0199575241661 | 1 |
| surface_stress | Surface Stress according to COARE 3.5 Algorithm | Pa | double | N/A | 8.354832E-5 to 0.3496806 | 1 |
| time | Time from Ships Data Files | days since 1950-01-01T00:00:00 | double | N/A | N/A | 1 |
| upwelling_IR | Upwelling IR computed from SST with Sky Correction | W/m^2 | double | N/A | 457.54056 to 485.34497 | 1 |
| wind_direction_relative_to_earth | Wind Direction relative to Earth from Sonic Anemometers on the bow mast | degrees | double | N/A | 0.031220508713645 to 359.98703353317 | 1 |
| wind_direction_relative_to_water | Wind Direction relative to water from Sonic Anemometers on the bow mast | degrees | double | N/A | 0.0680718 to 359.97498 | 1 |
| wind_speed_relative_to_earth | Wind Speed relative to Earth adjusted to 10m computed from ADCP measurements | m/s | double | N/A | 0.11267021163782 to 13.016361364197 | 1 |
| wind_speed_relative_to_earth_at_18m | Wind Speed relative to Earth at ~18m from Sonic Anemometers on the bow mast | m/s | double | N/A | 0.11388531607389 to 13.692181360213 | 1 |
| wind_speed_relative_to_water_18m | Wind Speed relative to water at ~18m from Sonic Anemometers on the bow mast | m/s | double | N/A | 0.112333685 to 13.785291 | 1 |
| wind_speed_relative_to_water_at_2m | Wind Speed relative to water adjusted to 2m computed from ADCP measurements | m/s | double | N/A | 0.11005533 to 11.10333 | 1 |
| wind_speed_relative_to_water_at_10m | Wind Speed relative to water adjusted to 10m computed from ADCP measurements | m/s | double | N/A | 0.111881234 to 13.128488 | 1 |