Parametrized Rain Impact Model for SMAP L2 V1.0
(PRIM_SMAP_L2_V1)Version | 1.0 |
Processing Level | 2 |
Start/Stop Date | 2015-Mar-31 to 2021-Oct-01 |
Short Name | PRIM_SMAP_L2_V1 |
Description | This is the PI-produced SMAP sea water salinity, level 2 v1.0 orbital/swath product from the NASA Soil Moisture Active Passive (SMAP) observatory. It is based on the Parameterized Rain Impact Model (PRIM) developed at the University of Central Florida (UCF) Central Florida Remote Sensing Lab (CFRSL), Orlando, FL; University of Washington (UW) Applied Physics Lab (APL), Seattle, WA. The PRIM product range extended from March 31, 2015 to September 30, 2021. It includes data for a range of parameters: derived SMAP sea water salinity at surface, 1m depth and 5m depth, and probability of salinity stratification (PSS), rainfall rate and wind speed data. Each data file covers one 98-minute orbit (15 files per day), and corresponds to a JPL SMAP Level 2B CAP Sea Surface Salinity V5.0 file which corresponds to a single orbit on a given day. The SMAP satellite is in a near-polar orbit at an inclination of 98 degrees and an altitude of 685 km. It has an ascending node time of 6 pm and is sun-synchronous. With its 1000km swath, SMAP achieves global coverage in approximately 3 days, but has an exact orbit repeat cycle of 8 days. On board Instruments include a highly sensitive L-band radiometer operating at 1.41GHz and an L-band 1.26GHz radar sensor providing complementary active and passive sensing capabilities. Observations are global in extent and provided at 25km swath grid with an approximate spatial resolution of 60 km. |
DOI | 10.5067/PRIMS-2RSW1 |
Measurement | OCEANS > SALINITY/DENSITY > SALINITY OCEANS > OCEAN WINDS > SURFACE WINDS OCEANS > PRECIPITATION > LIQUID PRECIPITATION |
Swath Width | 1000 km |
Platform/Sensor | SMAP / Platform Name: Soil Moisture Active and Passive Observatory (SMAP) Orbit Period: 98.5 minutes Inclination Angle: 98.0 degrees SMAP L-BAND RADIOMETER SENSOR Name: SMAP L-Band Radiometer (SMAP L-BAND RADIOMETER) Swath Width: 1000.0 kilometers Description: Spacecraft angular distance from orbital plane relative to the Equator. |
Project | Soil Moisture Active Passive (SMAP) |
Data Provider | Publisher: PO.DAAC Creator: Jacob et al. Release Place: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA91109, USA Release Date: 2023-Dec-18 |
Format | netCDF4 |
Keyword(s) | PRIM, SMAP, SSS, Soil Moisture Active Passive, salinity, polar, sun-synchronous, sss, psu, NASA, project, mission, combined active/passive, L2, PSS, Parametrized Rain Impact Model, Probability of Salinity Stratification, stratification, diffusion |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Resolution Temporal Resolution: Hourly - < Daily Coverage Region: GLOBAL North Bounding Coordinate: 90 degrees South Bounding Coordinate: -90 degrees West Bounding Coordinate: -180 degrees East Bounding Coordinate: 180 degrees Time Span: 2015-Mar-31 to 2021-Oct-01Swath Width: 1000 km |
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Available for access in-region with AWS Cloud | |
Region | |
us-west-2 | |
podaac-ops-cumulus-protected/PRIM_SMAP_L2_V1/ | |
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TOOLS AND SERVICES | |
Data Subscriber |
Name | Long Name | Unit |
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Kz | Vertical Diffusivity Coefficient | m2 s-1 |
lat | latitude | degree_north |
lon | longitude | degree_east |
PRIM_S0 | Sea surface salinity estimated using PRIM | 1e-3 |
PRIM_S1m | Salinity at 1 meter depth estimated using RIM | 1e-3 |
PRIM_S5m | Salinity at 5 meters depth estimated using RIM | 1e-3 |
PSS | Probability of Salinity Stratification | 1 |
rain_rate | IMERG rain rate closest in time to SMAP observation time & collocated to the center of each SMAP pixel | mm hr-1 |
S_ref | Scripps RG Argo Salinity at 5m depth | 1e-3 |
time | time of SMAP observation | days since 2015-1-1 00:00:00 UTC |
wind_speed | wind speed from SMAP radiometer | m s-1 |
GENERAL DOCUMENTATION | |
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DATA CITATION POLICY | |
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DATA RECIPE | |
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ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD) | |
PI DOCUMENTATION | |
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Citation is critically important for dataset documentation and discovery. Please cite the data as follows, and cite the reference papers when it is appropriate.
Citation | Jacob et al.. 2023. Parameterized Rain Impact Model near-surface salinity and stratification estimates. Ver. 1.0. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/PRIMS-2RSW1
For more information see Data Citations and Acknowledgments.
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Journal Reference | Drushka, K., Asher, W. E., Ward, B., & Walesby, K.. 2016. Understanding the formation and evolution of rain-formed fresh lenses at the ocean surface, Journal of Geophysical Research: Oceans, 121, 4. |