Delta-X Vegetation Type Maps for Louisiana Coastal Basins

Vegetation type maps for the Atchafalaya and Terrebonne basins in coastal Louisiana, derived from NASA AVIRIS-NG airborne spectrometer imagery. The maps were generated by applying a machine learning model, trained on field samples and plot data, to surface reflectance mosaics from spring and fall 2021. This dataset is part of the NASA Delta-X campaign and is provided by ORNL_CLOUD in cloud-optimized GeoTIFF format.

Use Cases

• Analyzing spatial distribution of herbaceous and other vegetation types in coastal delta basins.
• Validating or comparing other land cover classification products for the Mississippi River Delta region.
• Supporting hydrological and ecological modeling of wetland processes by providing detailed vegetation inputs.
• Studying seasonal changes in vegetation cover using spring and fall 2021 acquisitions.

Strengths

• Classification is based on a machine learning model trained with coincident field samples and plot data from Louisiana's Coastwide Reference Monitoring System.
• Data is derived from high-resolution NASA AVIRIS-NG spectrometer imagery, providing detailed spectral information.
• The dataset covers two distinct time periods (spring and fall 2021) for the same geographic area.

Limitations

• The exact spatial resolution, row count, and file size of the raster data are not specified in the provided metadata.
• There is a conflict in the 'last updated' date between sources: one states 2026-03-13, while another states 2021-08-25.

Provenance

Source

NASA Delta-X campaign, AVIRIS-NG instrument, ORNL_CLOUD.

Collection Method

Machine learning classification applied to Level-2B BRDF-adjusted surface reflectance mosaics, using field samples and plot data for model training.

Time Range

2021 (spring and fall acquisitions)

Freshness

2026-03-13 03:11:35.063615

Geography

Atchafalaya and Terrebonne basins, coastal Louisiana, USA.