Satellite view of Earth
The CYGNSS data will enable scientists, for the first time, to probe key air-sea interaction processes that take place near the core of the storms, which are rapidly changing and play large roles in the genesis and intensification of hurricanes.

Science Data Products

Level 1 Bistatic Radar Cross Section of Earth Surface (low latency)

Level 1 Bistatic Radar Cross Section of Earth Surface (Climate Data Record)

Level 1 Bistatic Radar Cross Section of Earth Surface (Rongowai)

Level 2 Ocean Surface Windspeed and Mean Square Slope (low latency)

Level 2 Ocean Surface Windspeed and Mean Square Slope (Climate Data Record)

Level 2 Ocean Surface Heat Flux (low latency)

Level 2 Ocean Surface Heat Flux (Climate Data Record)

Level 2 Ocean Surface Windspeed (NOAA)

Level 3 Gridded Ocean Surface Windspeed and Mean Square Slope (low latency)

Level 3 Gridded Ocean Surface Windspeed and Mean Square Slope (Climate Data Record)

Level 3 Ocean Microplastic Concentration

Level 3 Storm Centric Grid

Level 3 6-Hourly and Daily Soil Moisture (UCAR)

Level 3 Merged (MRG) Storm Grid

Full Delay Doppler Map

Raw Intermediate Frequency

Algorithm Theoretical Basis Documents

Nanosats Breakdown

Level 1A DDM Calibration Algorithm Theoretical Basis Document, S. Gleason,  Scott Gleason, M. Al-Khaldi, D. McKague, CYGNSS Project Document 148-0136, Rev 4, 8 December 2023. [paper]

Level 1B DDM Calibration Algorithm Theoretical Basis Document, S. Gleason, M. Al-Khaldi, D. McKague, CYGNSS Project Document 148-0137, Rev 6, 8 December 2023. [paper]

Level 2 Wind Speed Retrieval Algorithm Theoretical Basis Document, D. Pascual, M.P. Clarizia, V. Zavorotny, D. McKague, C. Ruf, CYGNSS Project Document 148-0138, Rev 8, 20 November 2023. [paper]

Level 2 Mean-Square Slope Retrieval Algorithm Theoretical Basis Document, V. Zavorotny, CYGNSS Project Document 148-0139, Rev 3, 22 September 2016. [paper]

Level 1 & 2 Trackwise Corrected Climate Data Record Algorithm Theoretical Basis Document, C. Ruf, D. Twigg, CYGNSS Project Document 148-0389, Rev 1, 26 March 2020. [paper]

Level 3 Gridded Wind Speed Algorithm Theoretical Basis Document, C. Ruf, CYGNSS Project Document 148-0319, Rev 3, 20 November 2023. [paper]

Level 3 UCAR/CU CYGNSS Soil Moisture Product User Guide, C. Chew and E. Small, 9 May 2019. [paper]

Level 3 Merged Gridded Wind Speed Algorithm Theoretical Basis Document, A. Warnock, M. Al-Khaldi, A. Russel, C. Ruf, CYGNSS Project Document 148-0412, Rev 5, 22 February 2024. [paper]

Associated Project Documents

CYGNSS Handbook (2nd Edition), ISBN 978-1-60785-549-1 [handbook]

End-to-End Simulator Technical Memo, A. O’Brien, CYGNSS Project Do148-0123_CYGNSS_E2ES_EM. [paper]