Jason-3 Wet Path Delay Correction
(JASON_3_PD_CORRECTION)| Version | F |
| Processing Level | 2 |
| Start/Stop Date | 2016-Feb-12 to Present |
| Short Name | JASON_3_PD_CORRECTION |
| Description | This dataset provides supplementary wet tropospheric corrections for historical Jason-3 observations (https://www.ncei.noaa.gov/archive/accession/Jason3-xGDR). Recent assessments of the global sea level budget have resulted in increased scrutiny of estimates of global sea level change based on Jason-3. After a careful assessment of the wet tropospheric correction derived from the Advanced Microwave Radiometer (AMR) instrument, it was determined that further improvements to the accuracy of the historical Jason-3 observations could be made. Since this assessment was only completed after Jason-3 data was reprocessed to GDR-F (Geophysical Data Record – Version F) standards, it was not included in the GDR-F product release. For this reason, this supplementary correction product has been created using the method of Brown et al. (2012) to allow users to correct path delay and sea surface height observations, reducing errors in estimates of global sea level change by 2-3 mm over 8 years. The correction was computed based on comparison of the AMR-observed brightness temperatures with independent satellite observations from the Special Sensor Microwave Imager Sounder (SSMI), F16, F17 and F18, Fundamental Climate Data Records. SSMI data was obtained from the NOAA Climate Data Record (CDR) of SSMIS Microwave Brightness Temperatures, RSS Version 8 (Wentz et al., 2019, https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ncdc :C01567/html). The method described in Brown et al. (2012) to map SSMI Brightness Temperatures to AMR equivalent brightness temperatures (TBs) was used. Although it was found that it made little difference to the result, a bias was removed between SSMI equivalent AMR TBs and AMR TBs with respect to latitude for all data prior to computing temporal trends. In addition, only rain free, mostly clear data (TB18.7 GHz < 160K) data were considered. The correction is supplied on a pass-by-pass basis in a 4-column text file. See the product documentation for guidance on how to apply it to Jason-3 observations. |
| DOI | 10.5067/J3L2G-PDCOR |
| Measurement | OCEANS > SEA SURFACE TOPOGRAPHY > SEA SURFACE HEIGHT OCEANS > OCEAN WAVES > SIGNIFICANT WAVE HEIGHT |
| Swath Width | 5.2 km |
| Platform/Sensor | JASON-3 / Platform Name: Joint Altimetry Satellite Oceanography Network - 3 (JASON-3) Orbit Period: 112.0 minutes Inclination Angle: 66.05 degrees AMR SENSOR Name: Advanced Microwave Radiometer (AMR) JASON-3 / Platform Name: Joint Altimetry Satellite Oceanography Network - 3 (JASON-3) Orbit Period: 112.0 minutes Inclination Angle: 66.05 degrees GPSP SENSOR Name: Global Positioning System Payload (GPSP) Swath Width: 5.2 kilometers Description: Spacecraft angular distance from orbital plane relative to the Equator. JASON-3 / Platform Name: Joint Altimetry Satellite Oceanography Network - 3 (JASON-3) Orbit Period: 112.0 minutes Inclination Angle: 66.05 degrees POSEIDON-3 SENSOR Name: JASON-2 RADAR ALTIMETER (POSEIDON-3) Swath Width: 5.1 kilometers Description: Spacecraft angular distance from orbital plane relative to the Equator. |
| Project | JASON-3 (JASON-3) |
| Data Provider | Publisher: JPL Creator: Brown, S., J. Willis, S. Fournier Release Place: JPL Release Date: 2023-Dec-12 |
| Format | ascii |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Resolution Temporal Resolution: Hourly - < Daily Coverage Region: GLOBAL North Bounding Coordinate: 66 degrees South Bounding Coordinate: -66 degrees West Bounding Coordinate: -180 degrees East Bounding Coordinate: 180 degrees Time Span: 2016-Feb-12 to PresentSwath Width: 5.2 km Projection Projection Type: Satellite native along-track Projection Detail: Geolocation information included for each pixel Ellipsoid: WGS 84 |
| DIRECT ACCESS | |
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| This dataset can be downloaded using the podaac-data-subscriber (the recommended tool for bulk downloading PO.DAAC data). It is a Python package for downloading one or many files using the command line interface. The URL redirects to the data-subscriber home page with instructions for utilizing the tool | |
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| Available for access in-region with AWS Cloud | |
Region | |
| us-west-2 | |
| podaac-ops-cumulus-protected/JASON_3_PD_CORRECTION/ | |
| podaac-ops-cumulus-public/JASON_3_PD_CORRECTION/ | |
AWS S3 Credentials | |
| Get AWS S3 Credentials | Documentation | |
| DATA CITATION GUIDELINES | |
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| USER'S GUIDE | |
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 | Brown, S., J. Willis, S. Fournier. 2023. Jason-3 Wet Path Delay Correction. Ver. F. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/J3L2G-PDCOR
For more information see Data Citations and Acknowledgments.
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| Journal Reference | S. Brown. 2012. Maintaining the Long-Term Calibration of the Jason-2/OSTM Advanced Microwave Radiometer Through Intersatellite Calibration, IEEE Transactions on Geoscience and Remote Sensing, 51, 3. https://doi.org//10.1109/TGRS.2012.2213262. |
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