U.S. Tidal Wetland Gross Primary Production Maps, 2000-2019

Conterminous United States tidal wetland gross primary production (GPP) is mapped at 250-meter resolution in 16-day intervals from 2000 to 2019. The dataset was produced by NASA using a spatially explicit Blue Carbon model that integrates MODIS EVI data, tidal wetland cover, and eddy covariance tower measurements. It provides a detailed, long-term record of carbon flux in coastal ecosystems.

Use Cases

• Modeling blue carbon sequestration rates using the GPP estimates (g C/m2/day).
• Analyzing spatial and temporal trends in wetland productivity across different coastal regions.
• Validating ecosystem models with the 19-year time series of 16-day interval data.
• Assessing the impact of wetland restoration projects on carbon dynamics.

Strengths

• Provides a 19-year time series (2000-2019) with 16-day temporal resolution, enabling detailed trend analysis.
• Spatial resolution is 250 meters, offering detailed mapping across the conterminous U.S.
• Data synthesis uses a Bayesian framework combining satellite imagery (MODIS EVI) and ground-based eddy covariance tower measurements.

Limitations

• Specific column names and dataset size (rows, file size) are not provided on any platform, limiting technical assessment.
• Conflicting last updated dates exist between sources (2019-11-17 on NASA Earthdata vs. 2026-03-13 on Data.gov).

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Derived using the spatially explicit Blue Carbon model, combining MODIS EVI datasets, tidal wetland cover, and field-based eddy covariance tower GPP data in a Bayesian framework.

Time Range

2000-03-05 to 2019-11-17

Freshness

2026-03-13

Geography

Conterminous United States