NOAA CYGNSS Level 2 Science Wind Speed 25-km Product Version 1.2

Description

This dataset contains the Version 1.2 NOAA CYGNSS Level 2 Science Wind Speed Product Version 1.2 which provides the time-tagged and geolocated average wind speed (m/s) in 25x25 kilometer grid cells along the measurement tracks from the Delay Doppler Mapping Instrument (DDMI) aboard the CYGNSS satellite constellation. This version corresponds to the second science-quality released through the PO.DAAC, as produced by NOAA/NESDIS using a specific geophysical model function (GMF version 1.0) and a track-wise debiasing algorithm as part of the wind speed retrieval process. The reported retrieval locations are determined by averaging the specular point locations falling within each 25 km grid cell. Version 1.2 includes four major updates compared to Version 1.1 ( https://doi.org/10.5067/CYGNN-22511 ), namely: 1) the inclusion of data associated to a spacecraft roll angle exceeding +/- 5 degrees; 2) an improved wind speed performance in the higher wind speed regime; 3) a full revision of the quality flags; 4) the inclusion of a wind speed retrieval error variable. Only one netCDF-4 data file is produced for each day (each file containing data from up to 8 unique CYGNSS spacecraft) with a latency of approximately 6 days (or better) from the last recorded measurement time. Formatting of the data variables and metadata designed to be consistent with the netCDF-4 formatting provided by the legacy CYGNSS mission Level 2 wind speed science data record (SDR).

Resources

Name Format Description Link
33 User Guide Compiled by the OSWT at NOAA-NESDIS-STAR https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L2/docs/basic_user_guide_noaa_l2_wind_v1.1.pdf
21 Updated Monthly https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_4.txt
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FCYGNN-22512
21 CYGNSS Mission Page at University of Michigan https://cygnss.engin.umich.edu/
22 Thumbnail https://podaac.jpl.nasa.gov/Podaac/thumbnails/CYGNSS_NOAA_L2_SWSP_25KM_V1.2.jpg
21 Generic Data Readers https://github.com/podaac/data-readers
33 Deriving Surface Winds from Tropical Cyclones https://cygnss.engin.umich.edu/wp-content/uploads/sites/534/2021/06/CYGNSS_Handbook_April2016.pdf
21 Data Use and Citation Policy https://podaac.jpl.nasa.gov/CitingPODAAC
21 Browse granule search results in Earthdata Search https://search.earthdata.nasa.gov/search/granules?p=C2254232941-POCLOUD
21 OPeNDAP Access for Data in the Cloud https://podaac.jpl.nasa.gov/OPeNDAP-in-the-Cloud
33 Algorithm Theoretical Basis Document for the NOAA Level 2 CYGNSS Winds Datasets https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L2/docs/atbd_noaa_l2_wind_v1.2_apr072022.pdf
21 Updated Monthly https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_1.txt
21 Updated Monthly https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_2.txt
21 Updated Monthly https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_3.txt
21 Updated Monthly https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_5.txt
21 Updated Monthly https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_6.txt
21 Updated Monthly https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_8.txt
21 Saïd, F., Jelenak, Z., Park, J., and Chang, P. S.. 2021. The NOAA Track-Wise Wind Retrieval Algorithm and Product Assessment for CyGNSS. IEEE Transactions on Geoscience and Remote Sensing, vol. 60, pp. 1-24, Art no. 4202524, doi: 10.1109/TGRS.2021.3087426. https://doi.org/10.1109/TGRS.2021.3087426
21 Ruf, C., Asharaf, S., Balasubramaniam, R., Gleason, S., Lang, T., McKague, D., Twigg, D., and Waliser, D.. 2019. In-Orbit Performance of the Constellation of CYGNSS Hurricane Satellites. Bull. Amer. Meteor. Soc., 100, 2009 - 2023, https://doi.org/10.1175/BAMS-D-18-0337.1. https://doi.org/10.1175/BAMS-D-18-0337.1
21 Updated Monthly https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_7.txt
21 Ruf, C., Atlas, R., Chang, P., Clarizia, M., Garrison, J. Gleason, S., Katzberg, S., Jelenak, Z., Johnson, J., Majumdar, S., O'Brien, A., Posselt, D., Ridley, A., Rose, R., and Zavorotny, V.. 2015. New Ocean Winds Satellite Mission to Probe Hurricanes and Tropical Convection. Bull. Amer. Meteor. Soc., doi:10.1175/BAMS-D-14-00218.1. https://doi.org/10.1175/BAMS-D-14-00218.1
21 CYGNSS data documentation and references provided and hosted by NOAA/NESDIS/STAR. https://manati.star.nesdis.noaa.gov/products/CYGNSS.php
21 Said, F., Jelenak, Z., Park, J., Soisuvarn, S., and Chang, P. S.. 2019. A Track-Wise Wind Retrieval Algorithm for the CYGNSS Mission. IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, Yokohama, Japan. pp. 8711-8714. doi: 10.1109/IGARSS.2019.8898099 https://doi.org/10.1109/IGARSS.2019.8898099
21 Saïd, F., Jelenak, Z., and Chang, P. S.. 2021. NOAA CYGNSS Wind Product: Recent Progress. 2021 IEEE Specialist Meeting on Reflectometry using GNSS and other Signals of Opportunity (GNSS+R), pp. 73-76, doi: 10.1109/GNSSR53802.2021.9617693. https://doi.org/10.1109/GNSSR53802.2021.9617693
21 HTTPS endpoint for data browse and download https://cmr.earthdata.nasa.gov/virtual-directory/collections/C2254232941-POCLOUD
21 README File https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L2/noaa/README.txt

Tags

  • oceans
  • spectral-engineering
  • radar
  • ocean-winds
  • earth-science

Topics

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