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NACP North American 8-km Net Ecosystem Exchange and Component Fluxes, 2004

Data Set Overview

Data setNACP North American 8-km Net Ecosystem Exchange and Component Fluxes, 2004
DOI10.3334/ORNLDAAC/1203
Release date2014-01-13
ProjectNorth American Carbon Program (NACP)
Time Period2004-01-01

Description

This data set provides modeled carbon flux estimates at 8-km spatial resolution over North America for the year 2004 of (1) net ecosystem exchange (NEE) of carbon dioxide (CO2), (2) net ecosystem production (NEP, the balance of net primary production and heterotrophic respiration), (3) stream evasion (CO2 emitted from streams and rivers), (4) emissions from harvested forest and agricultural products, and (5) emissions from biomass burning. Annual estimates, in g C/m2/year, are provided for all five fluxes. Daily estimates, in g C/m2/day, are provided for NEP and stream evasion fluxes. Fluxes for fire emissions, harvest decomposition/respiration, stream evasion, and NEP were derived as described in Section 5. NEE fluxes were estimated using a full bottom-up accounting of NEE produced by integrating emissions from harvested forest and agricultural products, CO2 emitted from streams and rivers, and biomass burning in the CarbonTracker (version 2011_oi) modeling system. NEE estimates were run in the forward mode through the CarbonTracker inversion setup that calculates CO2 uptake and release at the Earth's surface over time. Refer to Turner et al.(2013) for details. There are seven data files in NetCDF (.nc) format with this data set, including: five annual files for fire emissions, harvest decomposition/respiration, stream evasion, NEP, and NEE fluxes; and two daily files for NEP and stream evasion fluxes.

Documentation

Data set reference document

Citation

Turner, D.P., W.D. Ritts, A.R. Jacobson, W. Wang, and R.R. Nemani. 2013. NACP North American 8-km Net Ecosystem Exchange and Component Fluxes, 2004. ORNL DAAC, Oak Ridge, Tennessee, USA. http://dx.doi.org/10.3334/ORNLDAAC/1203
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Project

North American Carbon Program (NACP): The North American Carbon Program (NACP) is a multidisciplinary research program designed to obtain scientific understanding of North America's carbon sources and sinks and of changes in carbon stocks needed to meet societal concerns and to provide tools for decision makers.

Project data set list for North American Carbon Program (NACP).

Companion Files

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  • NACP_Modeled_NEE_NEP_Fluxes.pdf

Data Files

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Data File (Granule)File SizeDates
na_annual8k_fire_emissions_2004.nc.gz 30.5 KB 2004-01-01 - 2004-12-31
na_annual8k_nep_2004.nc.gz 768.6 KB 2004-01-01 - 2004-12-31
na_annual8k_nee_2004.nc.gz 790.3 KB 2004-01-01 - 2004-12-31
na_annual8k_harvested_product_2004.nc.gz 219.3 KB 2004-01-01 - 2004-12-31
na_annual8k_stream_evasion_2004.nc.gz 203.5 KB 2004-01-01 - 2004-12-31
na_daily8k_stream_evasion2004.nc.gz 99.9 MB 2004-01-01 - 2004-12-31
na_daily8k_NEP2004.nc.gz 670.0 MB 2004-01-01 - 2004-12-31

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Files related to this data set have been downloaded on 23 occasions since 2014-01-13, totaling 200 files.