Modeled Soil Accretion for Louisiana Wetlands to 2100

Modeled estimates of soil accretion for the Atchafalaya and Terrebonne basins in the Mississippi River Delta of coastal Louisiana. The dataset was generated by NASA using the Numerical Understanding of Marsh Accretion Resilience (NUMAR) model, a process-based adaptation of the NUMAN model for marsh environments. Predictions cover an 80-year period from 2021 to 2100.

Use Cases

• Projecting future marsh elevation change under modeled scenarios using spatially explicit input values.
• Analyzing sediment accretion patterns within ecogeomorphic cells defined by vegetation and elevation.
• Assessing coastal landform resilience by integrating model outputs from the provided shapefile.

Strengths

• Model outputs are spatially explicit, aggregated within defined ecogeomorphic cells.
• Provides an 80-year future projection from 2021 to 2100 for long-term trend analysis.
• Developed by NASA, indicating a credible scientific origin.

Limitations

• Conflicting last updated dates: one source states 2026-03-13, while others show an improbable 2100-12 31.
• Specific row counts, column names, and dataset size are not provided by any source.
• License is ambiguously listed as 'other-license-specified' on Data.gov.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Predictions generated using the Numerical Understanding of Marsh Accretion Resilience (NUMAR) model, an adaptation of the NUMAN model for marshes.

Time Range

2021 to 2100

Freshness

2026-03-13

Geography

Atchafalaya and Terrebonne basins in the Mississippi River Delta, coastal Louisiana, USA