Aquarius L3: Seasonal Global Soil Moisture Climatology

NASA Aquarius satellite data provides Level-3 gridded seasonal global soil moisture climatology estimates. The dataset is derived from passive microwave radiometer measurements on the SAC-D satellite, offering a climatological view of soil moisture patterns. It represents a processed, one-degree resolution global grid.

Use Cases

• Modeling seasonal soil moisture cycles based on satellite-derived climatology.
• Analyzing global land-surface hydrology patterns from gridded geospatial data.
• Validating climate or land surface models against a satellite-based soil moisture reference.
• Studying long-term soil moisture trends in relation to seasonal climate phenomena.

Strengths

• Data originates from the authoritative NASA Aquarius/SAC-D mission.
• Provides a processed, gridded climatology product, simplifying analysis of seasonal patterns.
• Has a cross-platform presence on Data.gov and NASA EarthData, indicating recognized utility.

Limitations

• Metadata is incomplete; column names, row counts, and specific license information are unavailable.
• Source platforms conflict on the last updated date (2015 vs. 2026), casting doubt on data freshness.
• The dataset's temporal coverage and specific seasonal definitions are not explicitly stated.

Provenance

Source

National Aeronautics and Space Administration (NASA) Aquarius/SAC-D mission.

Collection Method

Derived from Level-3 passive microwave radiometer measurements.

Time Range

Seasonal climatology, but specific years of data collection are not provided.

Freshness

Last updated dates conflict: NASA EarthData lists 2015-06-07, while Data.gov lists 2026-04 10.

Geography

Global, gridded at one-degree resolution.