RapidScat Level 1B Time-Ordered Geo-Located Sigma-0 Version 1.2

This dataset contains the ISS-RapidScat Version 1.2 Level 1B geo-located Sigma-0 measurements and antenna pulse "egg" and "slice" geometries as derived from ephemeris and the Level 1A dataset. Version 1.2 is intended as a replacement and continuation of the Version 1.1 data forward from orbital revolution number 5127, corresponding to 19 August 2015; the overlapping time period starting on 19 August 2015 corresponds to the first time period of the recorded low signal-to-noise ratio (SNR). This Version 1.2 dataset differs from the previous Version 1.1 dataset as follows: 1) L1B sigma-0 has been re-calibrated during the periods of low signal-to-noise ratio (SNR) and 2) during low SNR periods the L1B sigma-0 calibration is determined using re-pointed L1B QuikSCAT data. The pulse "egg" represents the complete footprint of the pulse, which has a spatial geometry of approximately 25 km by 35 km. There are 8 slices that constitute the range-binned components of a pulse each of which has a spatial geometry of approximately 25 km by 7 km. The orientation of the long dimension of the slices varies with the rotation of the antenna and thus does not align with the along/across track orientation of the wind vector grid in the L2B/L2A products. Data are provided in single-orbit files in HDF-4 format. RapidScat is a Ku-band dual beam circular rotating scatterometer retaining much of the same hardware and functionality of QuikSCAT, with exception of the antenna sub-system and digital interface to the ISS Columbus module, which is where RapidScat is mounted. The NASA mission is officially referred to as ISS-RapidScat. Unlike QuikSCAT, ISS-RapidScat is not in sun-synchronous orbit, and flies at roughly half the altitude with a low inclination angle that restricts data coverage to the tropics and mid-latitude regions; the extent of latitudinal coverage stretches from approximately 61 degrees North to 61 degrees South. Furthermore, there is no consistent local time of day retrieval. Caution: this dataset is intended for expert use only. If you must use RapidScat Sigma-0 data but you are unsure about how to use the L1B data record, please consider using either of the following L2A datasets: 1) http://podaac.jpl.nasa.gov/dataset/RSCAT_L2A_12KM_V1.2 or 2) http://podaac.jpl.nasa.gov/dataset/RSCAT_L2A_25KM_V1.2. If you have any questions or concerns, please visit our Forum at https://podaac.jpl.nasa.gov/forum/.

Data and Resources

Field Value
accessLevel public
bureauCode {026:00}
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catalog_@id https://data.nasa.gov/data.json
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citation RapidScat Project. 2016-04-18. RapidScat Level 1B Time-Ordered Geo-Located Sigma-0. Version 1.2. RapidScat Level 1B Time-Ordered Geo-Located Sigma-0 Version 1.2. PO.DAAC. Archived by National Aeronautics and Space Administration, U.S. Government, PO.DAAC. https://doi.org/10.5067/RSCAT-L1B12. http://www.jpl.nasa.gov/news/fact_sheets/issrapidscat_factsheet.pdf. RapidScat Project, PO.DAAC, 2016-04-18, RapidScat Level 1B Time-Ordered Geo-Located Sigma-0 Version 1.2, http://www.jpl.nasa.gov/news/fact_sheets/issrapidscat_factsheet.pdf.
creator RapidScat Project
graphic-preview-description Thumbnail
graphic-preview-file https://podaac.jpl.nasa.gov/Podaac/thumbnails/RSCAT_L1B_V1.2.jpg
identifier C1664741245-PODAAC
issued 2016-04-19
landingPage https://doi.org/10.5067/RSCAT-L1B12
language {en-US}
metadata_type geospatial
modified 2017-04-28
programCode {026:001}
publisher NASA/JPL/PODAAC
release-place PO.DAAC
resource-type Dataset
series-name RapidScat Level 1B Time-Ordered Geo-Located Sigma-0
source_datajson_identifier true
source_hash 89bbe77a4480e5514877984a873c8029c4945aaf
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-180.0, -61.0], [180.0, -61.0], [180.0, 61.0], [-180.0, 61.0], [-180.0, -61.0]]]}
temporal 2015-08-19T03:48:11Z/2016-08-19T15:01:26Z
theme {ISS_RapidScat,geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • earth-science
  • geo
  • geoss
  • national
  • north-america
  • radar
  • spectral-engineering
  • united-states
isopen False
license_id notspecified
license_title License not specified
maintainer Bryan Stiles
maintainer_email Bryan.W.Stiles@jpl.nasa.gov
metadata_created 2025-11-20T06:11:35.750913
metadata_modified 2025-11-20T06:11:35.750917
notes This dataset contains the ISS-RapidScat Version 1.2 Level 1B geo-located Sigma-0 measurements and antenna pulse "egg" and "slice" geometries as derived from ephemeris and the Level 1A dataset. Version 1.2 is intended as a replacement and continuation of the Version 1.1 data forward from orbital revolution number 5127, corresponding to 19 August 2015; the overlapping time period starting on 19 August 2015 corresponds to the first time period of the recorded low signal-to-noise ratio (SNR). This Version 1.2 dataset differs from the previous Version 1.1 dataset as follows: 1) L1B sigma-0 has been re-calibrated during the periods of low signal-to-noise ratio (SNR) and 2) during low SNR periods the L1B sigma-0 calibration is determined using re-pointed L1B QuikSCAT data. The pulse "egg" represents the complete footprint of the pulse, which has a spatial geometry of approximately 25 km by 35 km. There are 8 slices that constitute the range-binned components of a pulse each of which has a spatial geometry of approximately 25 km by 7 km. The orientation of the long dimension of the slices varies with the rotation of the antenna and thus does not align with the along/across track orientation of the wind vector grid in the L2B/L2A products. Data are provided in single-orbit files in HDF-4 format. RapidScat is a Ku-band dual beam circular rotating scatterometer retaining much of the same hardware and functionality of QuikSCAT, with exception of the antenna sub-system and digital interface to the ISS Columbus module, which is where RapidScat is mounted. The NASA mission is officially referred to as ISS-RapidScat. Unlike QuikSCAT, ISS-RapidScat is not in sun-synchronous orbit, and flies at roughly half the altitude with a low inclination angle that restricts data coverage to the tropics and mid-latitude regions; the extent of latitudinal coverage stretches from approximately 61 degrees North to 61 degrees South. Furthermore, there is no consistent local time of day retrieval. Caution: this dataset is intended for expert use only. If you must use RapidScat Sigma-0 data but you are unsure about how to use the L1B data record, please consider using either of the following L2A datasets: 1) http://podaac.jpl.nasa.gov/dataset/RSCAT_L2A_12KM_V1.2 or 2) http://podaac.jpl.nasa.gov/dataset/RSCAT_L2A_25KM_V1.2. If you have any questions or concerns, please visit our Forum at https://podaac.jpl.nasa.gov/forum/.
num_resources 9
num_tags 11
title RapidScat Level 1B Time-Ordered Geo-Located Sigma-0 Version 1.2