AirSWOT Radar Interferogram Data for Mississippi River Delta

Delta-X AirSWOT Level 1B interferogram products contain Ka-band radar data collected during the 2021 campaign over the Atchafalaya and Terrebonne Basins. This dataset provides raw interferogram data in radar coordinates for two seasonal periods in Spring and Fall 2021, supporting the generation of georeferenced water height products. The data originates from the NASA Delta-X campaign and is managed by ORNL_CLOUD.

Use Cases

• Calibrating water surface elevation and slope models for river channels using interferogram data.
• Tying inland water observations to open ocean tidal conditions for coastal studies.
• Providing raw radar coordinate data for generating georeferenced Level 2 and Level 3 water height products.
• Analyzing seasonal changes in wetland hydrology between Spring and Fall 2021 campaigns.

Strengths

• Data covers two distinct seasonal campaigns (Spring and Fall 2021) for comparative analysis.
• Uses near-nadir wide-swath Ka-band radar interferometry, a specific method for measuring water-surface elevation.
• Dataset is hosted on multiple authoritative platforms (NASA EarthData and Data.gov), indicating recognized importance.

Limitations

• Data is provided in radar coordinate system, not in georeferenced map coordinates, requiring further processing for many applications.
• Sources conflict on the last updated date (2026-03 13 vs. 2021-09-12), creating uncertainty about metadata maintenance.
• Key details like row count, file size, and specific column names are unknown across all provided sources.

Provenance

Source

NASA Delta-X Campaign, ORNL_CLOUD.

Collection Method

Collected via AirSWOT airborne platform using near-nadir wide-swath Ka-band radar interferometry.

Time Range

2021-03-26 to 2021-04-18 and 2021-08-21 to 2021-09 12.

Freshness

2026-03-13 03:17:55.132584

Geography

Atchafalaya and Terrebonne Basins of the Mississippi River Delta, Louisiana, USA.