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SIB3 MODELED GLOBAL 1-DEGREE HOURLY BIOSPHERE-ATMOSPHERE CARBON FLUX, 1998-2006

Entry ID: SIB3_CARBON_FLUX

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Summary

Abstract: The Simple Biosphere Model, Version 3 (SiB3) was used to produce a global data set of hourly carbon fluxes between the atmosphere and the terrestrial biosphere for the years 1998-2006. This data set represents the global net ecosystem exchange (NEE) of carbon between the atmosphere and the terrestrial biosphere; specifically, the flux of CO2 between the planetary boundary layer (PBL) and the ... surface vegetation layer. Following atmospheric convention, flux is defined as positive into the atmosphere and negative into the surface vegetation.The data reported are 9 years of estimated hourly carbon flux for 14637 land points. Units are moles C/m2/sec.Data are provided in two NetCDF formats: * The NetCDF format provided by the investigators -- format designed specifically to minimize disk storage volume that excludes water grid cells. * A CF Compliant NetCDF format -- generated by the ORNL DAAC that includes both land and water grid cells.The investigator provided NetCDF formatted files can be processed using the provided FORTRAN code (sib_process_flux.f90) and the land mask (sib_mask.nc) into hourly, daily-mean, or monthly-mean fluxes on a global 1x1 degree Cartesian grid. The monthly-mean SiB3 fluxes were compared to TransCom flux data available for years 2000-2005 (Gurney et al., 2008) as a means of evaluating overall behavior of the model. In general, SiB3 fluxes are within the error bars of the TransCom results.The CF compliant NetCDF format files have been processed by the ORNL DAAC and the hourly and summarized daily-mean and monthly-mean flux data files are provided. GeoTIFF format files:In addition, the CF convention NetCDF files were converted to GeoTIFF image files by the ORNL DAAC and are included with the data set. Companion file:Additional information about the data formats, methodology, and data quality is found in the companion file: SiB3_carbon_flux_readme.pdfAccess to GeoTIFF format files via WCS Interface:The ORNL DAAC also provides access to the GeoTIFF files via a Web Coverage Service Interface (WCS). The OpenGISÃÂ® Web Coverage Service Interface Standard (WCS) defines a standard interface and operations that enables interoperable access to geospatial coverages.These data are a carbon cycle reanalysis, which may be thought of as analogous to NCEP meteorological reanalysis products. Carbon fluxes have been used by a large community of atmospheric transport modelers to create reanalysis of CO2 concentrations and the results have been evaluated against observations. In addition, the reanalyzed flux and CO2 fields are important for designing future observing strategies for the global carbon cycle.

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Description: SIB3 MODELED GLOBAL 1-DEGREE HOURLY BIOSPHERE-ATMOSPHERE CARBON FLUX, 1998-2006

Geographic Coverage

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Spatial coordinates

N: 90.0

S: -90.0

E: 180.0

W: -180.0

Data Set Citation

Dataset Originator/Creator: BAKER, I. T.BERRY, J.A.COLLATZ, G.J.DENNING, A.S.LEONARD, O.PHILPOTT, A.PRIHODKO, L.SCHAEFER, K.STOCKI, R.SUITS, N.S.

Dataset Title: SIB3 MODELED GLOBAL 1-DEGREE HOURLY BIOSPHERE-ATMOSPHERE CARBON FLUX, 1998-2006

Dataset Release Date: 2009

Dataset Release Place: Oak Ridge, Tennessee, U.S.A.

Dataset Publisher: Oak Ridge National Laboratory Distributed Active Archive Center

Data Presentation Form: Online Files

Dataset DOI: doi:10.3334/ORNLDAAC/909

Online Resource: http://mercury.ornl.gov/ornldaac/send/query?term2=909&term2attribut...

Temporal Coverage

Start Date: 1998-01-01

Stop Date: 2006-12-31

Location Keywords

GEOGRAPHIC REGION > GLOBAL

Science Keywords

ATMOSPHERE > ATMOSPHERIC TEMPERATURE > AIR TEMPERATURE

ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > CARBON DIOXIDE

ISO Topic Category

BIOTA

OCEANS

Access Constraints Source

Ancillary Keywords

AQUIFER

Freshwater > Freshwater Resources > Groundwater

Originating Center

Research Inst for Ground Water

Data Center

Centre for Environment and Development for the Arab Region and Europe

Data Center URL: http://www.cedare.int/

Data Center Personnel
Name: CENTER FOR ENVIRONMENT AND DEVELOPMENT FOR THE ARAB REGION AND EUROPE Phone: (202) 4513921/22/23/24 Fax: (202) 4513981 Email: email at cedare.int Contact Address: 2 El Hegaz Street Heliopoles Province or State: Cairo-Egypt Country: EGYPT