ERS-1 Gridded Level 3 Enhanced Resolution Sigma-0 from BYU
(ERS-1_BYU_L3_OW_SIGMA0_ENHANCED)This dataset will be available through Earthdata Cloud only, starting September, 2022. Learn More
| DOI | 10.5067/ERS1B-SNEN0 |
| Short Name | ERS-1_BYU_L3_OW_SIGMA0_ENHANCED |
| Description | This European Remote Sensing (ERS) Sigma-0 dataset is generated by the Scatterometer Climate Record Pathfinder (SCP) project at Brigham Young University (BYU) and is generated using a Scatterometer Image Reconstruction (SIR) technique developed by Dr. David Long at BYU. The dataset provides SIR processed Sigma-0 data from the ERS-1 C-band scatterometer, which is also known as the Active Microwave Instrument (AMI). AMI is a multimode radar operating at a frequency of 5.3 GHz (C-band), using vertically polarized antennas for both transmission and reception. The SIR technique results in an enhanced resolution image reconstruction and gridded on an equal-area grid (for non-polar regions) at 8.9 km pixel resolution stored in SIR files; polar regions are gridded at the same resolution using a polar-stereographic technique. A non-enhanced version is provided at 44.5 km pixel resolution in a format known as GRD (i.e., gridded) files. All files are produced in IEEE formatted binary. All data files are separated and organized by region, parameter, and sampling technique (i.e., SIR vs. GRD). The regions of China and Japan are combined into a single region. In addition to Sigma-0, various statistical parameters are provided for added guidance, including but not limited to: standard deviation, measurement counts, pixel time, Sigma-0 error, and average incidence angle. This dataset was once distributed on tape, but has been made available on FTP thanks to the BYU SCP. |
| Version | 1 |
| Dataset Type | COMPLETE |
| Measurement | CRYOSPHERE > SEA ICE > ICE EXTENT SPECTRAL/ENGINEERING > RADAR > SIGMA NAUGHT |
| Processing Level | 3 |
| Coverage | Region: Japan Region: Alaska Region: EUROPE Region: AFRICA Region: Central America Region: China Region: Siberia Region: PACIFIC OCEAN Region: ANTARCTICA Region: ANTARCTICA Region: ARCTIC Region: ANTARCTICA Region: Greenland Region: NORTH AMERICA Region: NORTH AMERICA Region: ARCTIC Region: ARCTIC Region: Indonesia Region: SOUTH AMERICA Region: AUSTRALIA/NEW ZEALAND Region: ASIA North Bounding Coordinate: 88.2 degrees South Bounding Coordinate: -79.7 degrees West Bounding Coordinate: -180 degrees East Bounding Coordinate: 180 degrees Time Span: 1992-Jan-01 to 1996-May-17 |
| Resolution | Spatial Resolution: 0.04 Decimal Degrees x 0.04 Decimal Degrees Temporal Resolution: 6 Day |
| Projection | Projection Type: Gridded Projection Detail: Equal-Area and Polar-Stereographic Ellipsoid: WGS 84 |
| Platform/Sensor | ERS-1 / Platform Name: European Remote Sensing Satellite-1 (ERS-1) Orbit Period: 100.3 minutes Inclination Angle: 98.5 degrees AMI SENSOR Name: Active Microwave Instrument (AMI) Swath Width: 500.0 kilometers Description: Spacecraft angular distance from orbital plane relative to the Equator. |
| Project | Scatterometry Climate Record Pathfinder (SCP) |
| Data Provider | Publisher: PO.DAAC Creator: BYU/SCP Release Place: PO.DAAC Release Date: 2011-Nov-29 Resource: https://podaac-tools.jpl.nasa.gov/drive/files/allData/ers1/L3/byu_scp/sigma0enhanced/docs/dLongERS1.html |
| Keyword(s) | sigma naught, sigma-0, backscatter, normalized radar cross-section, radar, ers, ers-1, ami, c-band, scatterometer, byu, david long, scp, sir, grd |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
| DIRECT ACCESS | |
| PO.DAAC DRIVE | https://podaac-tools.jpl.nasa.gov/drive/files/allData/ers1/L3/byu_scp/sigma0enhanced |
| Format | RAW |
| USER'S GUIDE | |
| DATA CITATION POLICY | |
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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 | BYU/SCP. 2011. ERS-1 Gridded Level 3 Enhanced Resolution Sigma-0 from BYU. Ver. 1. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/ERS1B-SNEN0
For more information see Data Citations and Acknowledgments.
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| Journal Reference | Early, D. S. and D. G. Long, 2001: Image Reconstruction and Enhanced Resolution Imaging From Irregular Samples. IEEE Transactions on Geoscience and Remote Sensing, Vol. 39, No.2, pp. 291-302. . |
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