Tidal Wetland Soil Carbon Stocks for the Conterminous United States, 2006-2010

This dataset provides modeled estimates of soil carbon stocks for tidal wetland areas of the Conterminous United States (CONUS) for the period 2006-2010. Wetland areas were determined using both 2006-2010 Coastal Change Analysis Program (C-CAP) raster maps and the National Wetlands Inventory (NWI) vector data. All 30 x 30-meter C-CAP pixels were extracted that are coded as estuarine emergent, scrub/shrub, or forested in either 2006 or 2010. A soil database for model fitting and validation was compiled from 49 different studies with spatially explicit empirical depth profile data and associated metadata, totaling 1,959 soil cores from 18 of the 22 coastal states. Reported estimates of carbon stocks were derived with modeling approaches that included (1) applying a single average carbon stock value from the compiled soil core data, (2) applying models fit using the empirical data and applied spatially using soil, vegetation and salinity maps, (3) relying on independently generated soil carbon maps from The United States Department of Agriculture (USDA)'s Soil Survey Geographic Database (SSURGO), and the NWI that intersected with mapped tidal wetlands, and (4) using a version of SSURGO bias-corrected for bulk density. Comparisons of uncertainty, precision, and accuracy among these four approaches are also provided.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated June 8, 2026, 22:30 (UTC)
Created April 1, 2025, 19:30 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 689f4c4e-19ba-4786-b37a-6b2c0f849c5f
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/1612
license https://www.usa.gov/government-works
modified 2026-06-03T16:52:50Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
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source_hash c857f03a3705fb185b30b94d1ee7b78557dda4c6f2b116fd89f38ff7613e123f
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -127.966, "NorthBoundingCoordinate": 48.2372, "EastBoundingCoordinate": -65.2711, "SouthBoundingCoordinate": 22.7286}]]
temporal 2006-01-01/2010-12-31
theme {"Earth Science"}