SHIFT Radiometer Ocean Reflectance Measurements at Stearns Wharf

NASA's SHIFT dataset provides calculated remote sensing reflectance (Rrs) from a fixed Ramses TriOS radiometer at Stearns Wharf, Santa Barbara, California. It contains solar downwelling irradiance, sky radiance, and water-leaving radiance data processed at 10-second intervals. Measurements were collected over eight days in April and May 2022 to coincide with SHIFT campaign flights.

Use Cases

• Calibrating satellite-derived ocean color products using in-situ water-leaving radiance (Lw) and reflectance (Rrs) measurements.
• Studying diurnal or short-term variability in coastal optical properties with data recorded at 10-second intervals.
• Validating atmospheric correction models for remote sensing with concurrent solar downwelling irradiance (Ed) and sky radiance (Ls) data.
• Analyzing the relationship between irradiance and radiance components at a fixed coastal geographic point (34.41037665, -119.68557147).

Strengths

• Data is processed to a key derived product (remote sensing reflectance, Rrs) at a high temporal resolution of 10 seconds.
• Measurements are tightly coordinated with SHIFT campaign flights, being either concurrent or within a 2.5-hour window.
• Data originates from a fixed, known location, reducing positional uncertainty for time-series analysis.
• Dataset is hosted by NASA and appears on multiple platforms, indicating its importance and curation.

Limitations

• Key structural details like column names, row count, and file size are not provided by any source.
• Sources conflict on the last updated date: one states 2026-03-12, while another states 2022-05-29.
• The license is ambiguously noted as 'other-license-specified' on one platform, with others listing it as null.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Measurements collected with a Ramses TriOS radiometer, processed from proprietary format to CSV.

Time Range

2022-04 05 to 2022-05-29

Freshness

2026-03-12 21:29:02.677058

Geography

Fixed position at Stearns Wharf, Santa Barbara, California, U.S. (34.41037665, -119.68557147)