NACP: Forest Carbon Stocks, Fluxes and Productivity Estimates, Western USA, 1979-2099

This dataset contains annual estimates of carbon stocks, fluxes, and productivity over forested land in 11 states of the western USA (Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, and Wyoming). The estimates were produced from multiple simulations using the Community Land Model (v4.5) with different climate forcing data and prescribed harvest rates. Business as usual (BAU) scenarios were run to ensure that the simulations represented present-day stand ages. The estimates span two modeled time periods, 1979-2014 and 2015-2099, at 1/24-degree (4 km x 4 km) resolution. Variables included are gross primary production (GPP), net ecosystem exchange (NEE), net ecosystem productivity (NEP), net primary production (NPP), autotrophic respiration (RA), heterotrophic respiration (RH), transpiration factor, aboveground live tree carbon, carbon loss from fire, allocation to stem carbon, and burned area fraction over forested areas of the western USA.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated April 13, 2026, 19:59 (UTC)
Created April 1, 2025, 17:55 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 337a9f51-3fcf-4e61-ab6a-1637de6ee7f9
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/1662
license https://www.usa.gov/government-works
modified 2026-04-06T22:16:01Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 86c0909949f48bc5fece2c45c706aae13635b4f5f7948a11870d9cf84a856861
source_schema_version 1.1
spatial [[{"WestBoundingCoordinate":-124.812,"NorthBoundingCoordinate":49.0351,"EastBoundingCoordinate":-101.961,"SouthBoundingCoordinate":31.1875}],"CARTESIAN"]
temporal 1979-01-01/2099-12-31
theme {"Earth Science"}