Please Note: This dataset is retired and will not be maintained in the future. However, this dataset is displayed for archive purposes and may not reflect the most updated information.
CYGNSS Level 2 Science Data Record Version 2.0
SHARE THIS PAGE
1 Publication Cited this Dataset >>
Citation metrics available for years (2015-2019)
Please contact us if there are any discrepancies or inaccuracies found below.
DOI10.5067/CYGNS-L2X20
Short NameCYGNSS_L2_V2.0
DescriptionThis dataset contains the Version 2.0 CYGNSS Level 2 Science Data Record which provides the time-tagged and geolocated average wind speed (m/s) and mean square slope (MSS) with 25x25 kilometer resolution from the Delay Doppler Mapping Instrument aboard the CYGNSS satellite constellation. This version supersedes Version 1.1. The reported sample locations are determined by the specular points corresponding to the Delay Doppler Maps (DDMs). A subset of DDM data used in the direct processing of the average wind speed and MSS is co-located inside of the Level 2 data files. Only one netCDF data file is produced 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. The Version 2.0 release represents the first science-quality release that has moved beyond the previous "Provisional" releases (i.e., Version 1.0 and 1.1). Here is a summary of improvements that reflect the quality of the Version 2.0 data release: 1) more accurate Geophysical Model Function (GMF) at low to moderate wind speeds (1-25 m/s) using a larger training set of coincident matchups with ground truth wind speeds; 2) First time use of GMF at storm force wind speeds (> 30 m/s) based on coincident matchups with ground truth wind speeds measured by the Stepped Frequency Microwave Radiometer on board the NOAA P-3 hurricane hunter airplanes during eyewall penetration of major Atlantic storms in summer/fall 2017; 3) Improved debiasing algorithm for L2 retrieval algorithm at low to moderate wind speeds using matching method between CYGNSS and ground truth measured cumulative distribution functions of wind speed over large global sample populations.
Version2.0
Persistent IDPODAAC-CYGNS-L2X20
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Please contact podaac@podaac.jpl.nasa.gov for more info.
Citation CYGNSS. 2017. CYGNSS Level 2 Science Data Record Version 2.0. Ver. 2.0. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/CYGNS-L2X20.

Download Citation
RIS XML JSON-LD

For more information see Data Citations and Acknowledgments.

Journal Reference Ruf, C., R. Atlas, P. Chang, M. Clarizia, J. Garrison, S. Gleason, S. Katzberg, Z. Jelenak, J. Johnson, S. Majumdar, A. OaEUR(TM)Brien, D. Posselt, A. Ridley, R. Rose, V. Zavorotny (2015). New Ocean Winds Satellite Mission to Probe Hurricanes and Tropical Convection. Bull. Amer. Meteor. Soc., doi:10.1175/BAMS-D-14-00218.1.