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Delta-X: AVIRIS-NG L3-derived Water Quality, TSS, and Turbidity, MRD, LA 2021, V2

Overview

DOIhttps://doi.org/10.3334/ORNLDAAC/2112
Version2
Project
Published2022-10-06
Updated2022-10-06
Usage46 downloads

Description

This dataset includes estimates of total suspended solids (TSS) concentration and turbidity for waters of the Atchafalaya River and Terrebonne Basins of the Mississippi River Delta (MRD) in coastal Louisiana. Estimates were derived from Level 2 (L2) BRDF-corrected imagery from the NASA's Next Generation Airborne Visible Infrared Imaging Spectrometer (AVIRIS-NG). AVIRIS-NG imagery was collected on March 27 to April 6 (spring) and August 20-25 (fall), 2021, as part of the 2021 Delta-X campaign. Algorithms for TSS and turbidity estimation were developed using in-situ remote-sensing reflectance measured at field sampling stations paired with in-situ measures of turbidity from a water quality probe and TSS from water samples. Using the in-situ data, a partial least squares regression (PLSR) model was developed for each AVIRIS-NG wavelength. A subset of the in-situ data, collected during relatively clear AVIRIS-NG overflights, was held out to validate the PLSR model. The PLSR algorithm was then applied to AVIRIS-NG imagery to retrieve TSS and turbidity across the study area. The measurement units for TSS and turbidity estimates are mg L-1 and Nephelometric Turbidity Units (NTU), respectively, and the spatial resolution is 3.8 to 5.4 m as determined by the AVIRIS-NG imagery. The dataset includes binary cloud and water masks. These data quantify the mesoscale (i.e., on the order of 1 ha) patterns of soil accretion that control land loss and gain and predict the resilience of deltaic floodplains under projected relative sea-level rise. Gridded estimates are provided in netCDF format, and regression coefficients are included in a comma-separated values (CSV) file. This is Version 2 of this dataset. All previously released data were updated to the latest available versions.

Science Keywords

  • TERRESTRIAL HYDROSPHERE
  • SURFACE WATER
  • SURFACE WATER PROCESSES/MEASUREMENTS
  • TERRESTRIAL HYDROSPHERE
  • WATER QUALITY/WATER CHEMISTRY
  • WATER CHARACTERISTICS
  • TURBIDITY
  • TERRESTRIAL HYDROSPHERE
  • WATER QUALITY/WATER CHEMISTRY
  • SOLIDS
  • SUSPENDED SOLIDS
  • TERRESTRIAL HYDROSPHERE
  • WATER QUALITY/WATER CHEMISTRY
  • SOLIDS
  • SEDIMENTS

Data Use and Citation

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Crosscite Citation Formatter
Fichot, C.G., and J. Harringmeyer. 2022. Delta-X: AVIRIS-NG L3-derived Water Quality, TSS, and Turbidity, MRD, LA 2021, V2. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/2112

This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use Policy. See our Data Use and Citation Policy for more information.

Data Files

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Companion Files

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Dataset has 1 companion files.

  • DeltaX_L3_AVIRIS-NG_Water_V2.pdf

Version History

VersionDataset TitlePublished
1Delta-X: AVIRIS-NG L3-derived Water Quality, TSS, and Turbidity, MRD, Louisiana, 20212022-08-30
2Delta-X: AVIRIS-NG L3-derived Water Quality, TSS, and Turbidity, MRD, LA 2021, V22022-10-06