CYGNSS Level 2 Ocean Surface Heat Flux Climate Data Record Version 1.1

This dataset contains the first release, Version 1.1, of the CYGNSS Level 2 Ocean Surface Heat Flux Climate Data Record (CDR), which provides the time-tagged and geolocated ocean surface heat flux parameters with 25x25 kilometer footprint resolution with 1-2 month latency from the Delay Doppler Mapping Instrument (DDMI) aboard the CYGNSS satellite constellation. The Cyclone Global Navigation Satellite System (CYGNSS) is a NASA Earth System Science Pathfinder Mission designed to collect the first frequent space-based measurements of surface wind speeds in the inner core of tropical cyclones. The Coupled Ocean-Atmosphere Response Experiment (COARE) version 3.5 algorithm combines CYGNSS L2 CDR v1.1 ocean surface wind speed estimates with the auxiliary parameters provided by the NASA Modern-Era Retrospective Analysis for Research and Applications Version 2 (MERRA-2) to produce latent and sensible heat fluxes and their respective transfer coefficients. More information on how the data is produced and validated can be found in the dataset user guide (see Documentation tab). More information on the CYGNSS mission, spacecraft, instrumentation and related datasets is available here: https://podaac.jpl.nasa.gov/CYGNSS. Additional information on the CYGNSS L2 CDR v1.1 wind speed dataset is available here: https://doi.org/10.5067/CYGNS-L2C11.

Data and Resources

Additional Info

Field	Value
Maintainer	Earthdata Forum
Last Updated	September 15, 2026, 05:58 (UTC)
Created	April 1, 2025, 15:18 (UTC)
accessLevel	public
bureauCode	{026:00}
catalog_conformsTo	https://project-open-data.cio.gov/v1.1/schema
harvest_object_id	d87d1abd-ba26-42b3-b33c-352197f1621a
harvest_source_id	b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title	Science Discovery Engine
identifier	10.5067/CYGNS-C2H11
license	https://www.usa.gov/government-works
modified	2026-09-07T22:16:04Z
programCode	{026:000}
publisher	NASA/ESSP/UMICH/CYGNSS;NASA/JPL/PODAAC
resource-type	Dataset
source_datajson_identifier	true
source_hash	fdc1de7cef610d81ce0e4c391d1660a532cd9fabbd81d8d198579718a10cba16
source_schema_version	1.1
spatial	["CARTESIAN", [{"NorthBoundingCoordinate": 40, "WestBoundingCoordinate": -180, "EastBoundingCoordinate": 180, "SouthBoundingCoordinate": -40}]]
temporal	2018-08-01/2026-09-07
theme	{"Earth Science"}