SiFSAP: High-Resolution Atmospheric and Surface State from Suomi NPP CrIS

Sounder SIPS Suomi NPP CrIMSS Level 2 SiFSAP Support V2 provides high-resolution geophysical retrievals from the Cross-track Infrared Sounder (CrIS). The SiFSAP algorithm generates profiles of temperature, water vapor, trace gases, clouds, and surface properties for each of 9 fields of view per field of regard. This dataset offers vertical sampling up to 98 levels and includes detailed averaging kernel information.

Use Cases

• Analyzing cloud microphysics and optical depth based on cloud property retrievals.
• Studying vertical profiles of atmospheric temperature and water vapor based on the 98-level sampling.
• Investigating surface skin temperature and geothermal gradients based on surface property variables.
• Monitoring trace gas species like methane and ozone based on atmospheric chemistry retrievals.
• Assessing retrieval uncertainty and vertical sensitivity based on included Empirical Orthogonal Function (EOF) and averaging kernel data.

Strengths

• Provides 3-times higher horizontal spatial resolution and 9-times denser sampling than other current IR sounder products.
• Includes detailed vertical profile information with up to 98 height levels.
• Contains comprehensive geophysical parameters, including trace gases, clouds, and surface properties.

Limitations

• Column names and specific data structure are not provided in the available metadata.
• The exact data volume (size, row count) is unknown.
• The license is specified only as 'other-license-specified', requiring further investigation.

Provenance

Source

GES_DISC (NASA Goddard Earth Sciences Data and Information Services Center)

Collection Method

Generated by the SiFSAP (Single Field-of-View Sounder Atmospheric Products) algorithm from Suomi NPP CrIS instrument measurements.

Time Range

Data is organized into 240 granules per day, with an orbit repeat cycle of approximately 16 days.

Freshness

2026-04-09 22:55:53.811905

Geography

Global coverage from the Suomi NPP satellite orbit.