CYGNSS Level 3 Science Data Record Version 3.0

This dataset contains the Version 3.0 CYGNSS Level 3 Science Data Record which provides the average wind speed and mean square slope (MSS) on a 0.2x0.2 degree latitude by longitude equirectangular grid obtained from the Delay Doppler Mapping Instrument aboard the CYGNSS satellite constellation. The Level 2 Delay Doppler Map (DDM) data are used in the direct processing of the average wind speed and MSS data that are binned on the Level 3 grid. 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. A single netCDF-4 data file is produced for each day of operation with an approximate 6 day latency. This version supersedes Version 2.1; https://doi.org/10.5067/CYGNS-L3X21. The reported sample locations are determined by the specular points corresponding to the Delay Doppler Maps (DDMs). The Version 3.0 release inherits all improvements made to the version 3.0 Level 2 data intended to improve the quality of the wind speed retrievals. For a full list of improvements to the version 3.0 Level 2 data, please refer to: https://doi.org/10.5067/CYGNS-L2X30.

Data and Resources

Additional Info

Field	Value
Maintainer	Earthdata Forum
Last Updated	March 16, 2026, 22:03 (UTC)
Created	April 1, 2025, 15:19 (UTC)
accessLevel	public
bureauCode	{026:00}
catalog_conformsTo	https://project-open-data.cio.gov/v1.1/schema
harvest_object_id	48b1b72f-0f18-437b-a636-262d537b4b30
harvest_source_id	b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title	Science Discovery Engine
identifier	10.5067/CYGNS-L3X30
license	https://www.usa.gov/government-works
modified	2026-03-09T22:16:01Z
programCode	{026:000}
publisher	NASA/JPL/PODAAC;NASA/ESSP/UMICH/CYGNSS
resource-type	Dataset
source_datajson_identifier	true
source_hash	ec5c1ec73563562971389389a1e00b579770bbb6d298eb12c4d3ca8e663e5644
source_schema_version	1.1
spatial	["CARTESIAN",[{"NorthBoundingCoordinate":40.0,"WestBoundingCoordinate":-180.0,"EastBoundingCoordinate":180.0,"SouthBoundingCoordinate":-40.0}]]
temporal	2018-08-01/2026-03-09
theme	{"Earth Science"}