ECOSTRESS L3/L4 Ancillary Data Quality Assurance Flags, Global 70m

ECOSTRESS L3 Ancillary QA Flags provide quality assessment fields for 11 input datasets used in generating higher-level land surface temperature products. The data is collected globally between 52 degrees N and 52 degrees S latitudes by the instrument attached to the International Space Station. This Version 1 product is generated by the Jet Propulsion Laboratory (JPL) and was last updated on March 13, 2026.

Use Cases

• Filtering ECOSTRESS scenes based on cloud mask quality flags mentioned in the description
• Assessing the reliability of land cover type data used in thermal radiometry processing
• Evaluating the impact of MODIS Terra aerosol data quality on downstream land surface temperature estimates
• Validating vegetation indices input data for ECOSTRESS evapotranspiration models

Strengths

• Provides consolidated quality flags for 11 distinct ancillary datasets, including cloud masks, land cover, and aerosols
• Covers a global latitudinal range between 52 degrees N and 52 degrees S
• Data provenance is clearly stated, originating from the Jet Propulsion Laboratory (JPL)

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download
• Known data acquisition gaps and anomalies are documented for specific periods between 2018 and 2023
• Column-level documentation is absent; field semantics must be inferred after download

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Quality flags from source data products are resampled by nearest neighbor onto the ECOSTRESS scene geolocation.

Time Range

Covers the operational period from the instrument's launch on June 29, 2018, with documented gaps.

Freshness

Last updated 2026-03-13 02:52:06.375108; freshness should be verified

Geography

Global coverage between 52 degrees N and 52 degrees S latitudes.