CYGNSS: Ocean Surface Heat Flux Climate Data Record

NASA's CYGNSS satellite constellation provides ocean surface heat flux parameters with 25x25 kilometer resolution. Version 1.0 combines wind speed estimates from the CYGNSS L2 CDR with auxiliary parameters from MERRA-2 using the COARE 3.5 algorithm. The data is produced with a latency of 1-2 months.

Use Cases

• Modeling ocean-atmosphere energy exchange based on latent and sensible heat flux parameters.
• Analyzing tropical cyclone development based on frequent, space-based inner-core wind speed measurements.
• Studying climate variability based on a long-term, validated climate data record of ocean surface fluxes.
• Validating atmospheric reanalysis models based on satellite-derived heat flux and wind speed data.

Strengths

• Data has a 25x25 kilometer footprint resolution.
• Parameters are produced with a latency of 1-2 months.
• Dataset is validated and described in a user guide.
• Wind speed estimates are derived from a NASA Earth System Science Pathfinder Mission.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to the satellite constellation's coverage.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Produced by the Coupled Ocean-Atmosphere Response Experiment (COARE) version 3.5 algorithm combining CYGNSS L2 CDR wind speed estimates with MERRA-2 auxiliary parameters.

Freshness

Last updated 2026-03-13 03:25:13.180079; freshness should be verified.

Geography

Global ocean coverage.