Delft3D Sediment Model for Atchafalaya Basin Delta-X Campaigns

A Delft3D hydrodynamic and sediment transport model for the Atchafalaya Basin in the Mississippi River Delta, Louisiana. The dataset contains simulations for the Spring and Fall 2021 Delta-X campaigns, providing outputs like water levels, velocity, and sediment concentration. It was produced by NASA, with model parameters calibrated using AirSWOT and AVIRIS-NG observational data.

Use Cases

• Calibrating regional sediment transport models using provided water level and velocity outputs.
• Analyzing inorganic mass accumulation rates from the derived annual netCDF file.
• Studying seasonal variation in hydrodynamics and sediment concentration between Spring and Fall 2021 campaigns.
• Validating remote sensing data (e.g., AirSWOT, AVIRIS-NG) against process-based model simulations.

Strengths

• Model calibration uses specific observational datasets: AirSWOT for water elevation and AVIRIS-NG for Total Suspended Solids.
• Includes all required files to run the Delft3D simulations, providing a complete modeling package.
• Covers two distinct seasonal campaigns (Spring and Fall 2021) for comparative analysis.
• Output includes key hydrodynamic variables: water levels, velocity, and depth-averaged sediment concentration.

Limitations

• Key metadata conflicts exist: the 'last updated' date differs significantly between datagov (2026) and NASA Earthdata (2021).
• Specific row counts, file sizes, and detailed column names are not provided by any source.
• The license is specified only as 'other-license-specified' on datagov, with no details on NASA Earthdata.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Numerical modeling using Delft3D, with parameters calibrated against AirSWOT and AVIRIS-NG mission data.

Time Range

2021

Freshness

2026-03-13 03:11:04.091632

Geography

Atchafalaya Basin, Mississippi River Delta, coastal Louisiana, USA