Soil Salinity and Hydroperiod Rasters for Coastal Wetlands in California and South Africa

Field spectrometer reflectance and soil salinity measurements from Carpinteria Salt Marsh Reserve support a Partial Least Squares Regression model for predicting surface soil salinity. The dataset includes derived salinity and hydroperiod raster products for Carpinteria Salt Marsh Reserve in California, USA and Langebaan Lagoon in South Africa. These 152.8 MB of TIF and CSV files enable analysis of hydrologic controls on spatial salinity patterns across contrasting wetland systems.

Use Cases

• Apply the provided PLSR model to in situ soil reflectance data to predict surface soil salinity values.
• Analyze hydroperiod raster products, representing inundation percentage, to investigate relationships with spatial salinity patterns.
• Compare imaging spectroscopy-derived surface soil salinity raster products from AVIRIS-3 and AVIRIS-NG data between the two wetland sites to assess model transferability.
• Use the paired soil reflectance and soil salinity survey measurements for calibration and validation of new soil salinity retrieval models.

Strengths

• Includes both in situ calibration data (reflectance and salinity) and derived spatial raster products for two distinct geographic sites.
• Data volume of 152.8 MB indicates detailed spatial coverage for the two coastal wetland study areas.
• Hydroperiod rasters are derived from Sentinel-1 synthetic aperture radar time series, providing a temporally rich hydrologic variable.

Limitations

• Unknown row count for the in situ survey data, making the calibration dataset's sample size unclear.
• Spatial coverage is limited to two specific wetland reserves, which may limit generalizability to other coastal systems.
• The soil salinity retrieval model is specific to the calibration data and sensor characteristics (AVIRIS), requiring validation for other instruments.

Provenance

Source

Daniel Jensen via figshare.

Collection Method

In situ field spectrometer measurements paired with lab-processed soil samples, combined with airborne imaging spectroscopy (AVIRIS) and Sentinel-1 SAR data processing.

Freshness

Last updated on 2026-03-23, indicating recent data availability.

Geography

Carpinteria Salt Marsh Reserve, California, USA and Langebaan Lagoon, Western Cape, South Africa.