Urban Biogenic CO2 fluxes: GPP, Reco and NEE Estimates from SMUrF, 2010-2019

This dataset contains estimates of biogenic CO2 flux components at 0.05 degree resolution from the Solar-Induced Fluorescence (SIF) for Modeling Urban biogenic Fluxes (SMUrF) model. Estimates were produced for the following regions and periods: eastern and western CONUS (2010-2019), western Europe (2010-2014 and 2017-2018), eastern Asia, eastern China, eastern Australia, South America, and Central Africa (2017-2018). Modeled CO2 flux components include gross primary production (GPP), ecosystem respiration (Reco), and net ecosystem exchange (NEE). Four-day means of GPP are estimated from solar-induced fluorescence (SIF) and biome-specific GPP-SIF relationships. Daily estimates of Reco are included. In addition, GPP and Reco were downscaled to hourly estimates and used to generate hourly NEE. Uncertainties for 4-day GPP and daily Reco estimates are provided. The input data streams included 500 m MODIS-based annual land cover classification, 0.05 degree spatiotemporally contiguous SIF, above-ground biomass (AGB) from GlobBiomass, eddy-covariance (EC) flux measurements, and gridded products of air and soil temperatures.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated February 17, 2026, 03:56 (UTC)
Created April 1, 2025, 19:44 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 41f8fa90-d11a-493a-95bf-ff02daf836d4
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/1899
landingPage https://search.earthdata.nasa.gov/search?q=Biogenic_CO2flux_SIF_SMUrF_1899&ac=true
modified 2026-02-16
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash cbdb1587b9b1a74addc47b779dd7542b8f8f53b7e1907f232785b89e19c6a40b
source_schema_version 1.1
spatial [[{"WestBoundingCoordinate":-125.0,"NorthBoundingCoordinate":60.0,"EastBoundingCoordinate":155.0,"SouthBoundingCoordinate":-40.0}],"CARTESIAN"]
temporal 2010-01-01/2010-01-01
theme {"Earth Science"}