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Kleinen, Thomas; Brovkin, Victor; von Bloh, Werner; Archer, David E; Munhoven, Guy (2011): Holocene carbon cycle dynamics, links to model files. PANGAEA, https://doi.org/10.1594/PANGAEA.758219, Supplement to: Kleinen, T et al. (2011): Holocene carbon cycle dynamics. Geophysical Research Letters, 37, L02705, 5 pp, https://doi.org/10.1029/2009GL041391

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Abstract:
We are investigating the late Holocene rise in CO2 by performing four experiments with the climate-carbon-cycle model CLIMBER2-LPJ. Apart from the deep sea sediments, important carbon cycle processes considered are carbon uptake or release by the vegetation, carbon uptake by peatlands, and CO 2 release due to shallow water sedimentation of CaCO3. Ice core data of atmospheric CO2 between 8 ka BP and preindustrial climate can only be reproduced if CO2 outgassing due to shallow water sedimentation of CaCO3 is considered. In this case the model displays an increase of nearly 20 ppmv CO2 between 8 ka BP and present day. Model configurations that do not contain this forcing show a slight decrease in atmospheric CO2. We can therefore explain the late Holocene rise in CO2 by invoking natural forcing factors only, and anthropogenic forcing is not required to understand preindustrial CO2 dynamics.
Related to:
Kleinen, Thomas; Tarasov, Pavel E; Brovkin, Victor; Andreev, Andrei A; Stebich, Martina (2011): Comparison of modeled and reconstructed changes in forest cover through the past 8000 years: Eurasian perspective. The Holocene, 21(5), 723-734, https://doi.org/10.1177/0959683610386980
Funding:
German Research Foundation (DFG), grant/award no. 25575884: Integrierte Analyse zwischeneiszeitlicher Klimadynamik
Comment:
Four experiments were performed: AO (Atmosphere-Ocean), AOV (Atmosphere-Ocean-Vegetation), AOVP (Atmosphere-Ocean-Vegetation-Peat), and AOVPC (Atmosphere-Ocean-Vegetation-Peat-Coral). All experiments were transient experiments from 8 ka BP to present day, initialised from 8 ka BP conditions, driven by orbital forcing. For exact experiment description, see reference.
Transient output is provided for all four experiments, time resolution is 50-year average values every 50 years.
Each experiment output consists of 8 files, with filenames preceded by the experiment code.
This publication and supplement is a result of sub-project "Comparison of climate and carbon cycle dynamics during late Quaternary interglacials using a spectrum of climate system models, ice-core and terrestrial archives" (COIN, web page archived at hdl:10013/epic.37020.d001).
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
File nameFile name
ExperimentExp
ParameterParameter
UnitUnit
Uniform resource locator/link to model result fileURL modelKleinen, Thomas
File sizeFile sizekByteunzipped
File formatFile format
Size:
285 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


File name

Exp

Parameter

Unit

URL model

File size [kByte]

File format
AO_baresoil_frac.ncAO (Atmosphere-Ocean)LPJ bare ground fraction[%]AO_baresoil_frac.nc.zip165900NetCDF
AO_grass_frac.ncAO (Atmosphere-Ocean)LPJ grass fraction[%]AO_grass_frac.nc.zip165900NetCDF
AO_tree_frac.ncAO (Atmosphere-Ocean)LPJ tree fraction[%]AO_tree_frac.nc.zip165900NetCDF
AO_c_lit.ncAO (Atmosphere-Ocean)LPJ litter carbon[kgC/m^2]AO_c_lit.nc.zip165900NetCDF
AO_c_soil.ncAO (Atmosphere-Ocean)LPJ soil carbon[kgC/m^2]AO_c_soil.nc.zip165900NetCDF
AO_c_veg.ncAO (Atmosphere-Ocean)LPJ vegetation carbon[kgC/m^2]AO_c_veg.nc.zip165900NetCDF
AO_climber_atmosphere.ncAO (Atmosphere-Ocean)same as listed for the AOVPC experimentAO_climber_atmosphere.nc.zip39800NetCDF
AO_climber_history.ncAO (Atmosphere-Ocean)same as listed for the AOVPC experimentAO_climber_history.nc.zip483NetCDF
AOV_baresoil_frac.ncAOV (Atmosphere-Ocean-Vegetation)LPJ bare ground fraction[%]AOV_baresoil_frac.nc.zip165900NetCDF
AOV_grass_frac.ncAOV (Atmosphere-Ocean-Vegetation)LPJ grass fraction[%]AOV_grass_frac.nc.zip165900NetCDF
AOV_tree_frac.ncAOV (Atmosphere-Ocean-Vegetation)LPJ tree fraction[%]AOV_tree_frac.nc.zip165900NetCDF
AOV_c_lit.ncAOV (Atmosphere-Ocean-Vegetation)LPJ litter carbon[kgC/m^2]AOV_c_lit.nc.zip165900NetCDF
AOV_c_soil.ncAOV (Atmosphere-Ocean-Vegetation)LPJ soil carbon[kgC/m^2]AOV_c_soil.nc.zip165900NetCDF
AOV_c_veg.ncAOV (Atmosphere-Ocean-Vegetation)LPJ vegetation carbon[kgC/m^2]AOV_c_veg.nc.zip165900NetCDF
AOV_climber_atmosphere.ncAOV (Atmosphere-Ocean-Vegetation)same as listed for the AOVPC experimentAOV_climber_atmosphere.nc.zip39800NetCDF
AOV_climber_history.ncAOV (Atmosphere-Ocean-Vegetation)same as listed for the AOVPC experimentAOV_climber_history.nc.zip483NetCDF
AOVP_baresoil_frac.ncAOVP (Atmosphere-Ocean-Vegetation-Peat)LPJ bare ground fraction[%]AOVP_baresoil_frac.nc.zip165900NetCDF
AOVP_grass_frac.ncAOVP (Atmosphere-Ocean-Vegetation-Peat)LPJ grass fraction[%]AOVP_grass_frac.nc.zip165900NetCDF
AOVP_tree_frac.ncAOVP (Atmosphere-Ocean-Vegetation-Peat)LPJ tree fraction[%]AOVP_tree_frac.nc.zip165900NetCDF
AOVP_c_lit.ncAOVP (Atmosphere-Ocean-Vegetation-Peat)LPJ litter carbon[kgC/m^2]AOVP_c_lit.nc.zip165900NetCDF
AOVP_c_soil.ncAOVP (Atmosphere-Ocean-Vegetation-Peat)LPJ soil carbon[kgC/m^2]AOVP_c_soil.nc.zip165900NetCDF
AOVP_c_veg.ncAOVP (Atmosphere-Ocean-Vegetation-Peat)LPJ vegetation carbon[kgC/m^2]AOVP_c_veg.nc.zip165900NetCDF
AOVP_climber_atmosphere.ncAOVP (Atmosphere-Ocean-Vegetation-Peat)same as listed for the AOVPC experimentAOVP_climber_atmosphere.nc.zip39800NetCDF
AOVP_climber_history.ncAOVP (Atmosphere-Ocean-Vegetation-Peat)same as listed for the AOVPC experimentAOVP_climber_history.nc.zip483NetCDF
AOVPC_baresoil_frac.ncAOVPC (Atmosphere-Ocean-Vegetation-Peat-Coral)LPJ bare ground fraction[%]AOVPC_baresoil_frac.nc.zip165900NetCDF
AOVPC_grass_frac.ncAOVPC (Atmosphere-Ocean-Vegetation-Peat-Coral)LPJ grass fraction[%]AOVPC_grass_frac.nc.zip165900NetCDF
AOVPC_tree_frac.ncAOVPC (Atmosphere-Ocean-Vegetation-Peat-Coral)LPJ tree fraction[%]AOVPC_tree_frac.nc.zip165900NetCDF
AOVPC_c_lit.ncAOVPC (Atmosphere-Ocean-Vegetation-Peat-Coral)LPJ litter carbon[kgC/m^2]AOVPC_c_lit.nc.zip165900NetCDF
AOVPC_c_soil.ncAOVPC (Atmosphere-Ocean-Vegetation-Peat-Coral)LPJ soil carbon[kgC/m^2]AOVPC_c_soil.nc.zip165900NetCDF
AOVPC_c_veg.ncAOVPC (Atmosphere-Ocean-Vegetation-Peat-Coral)LPJ vegetation carbon[kgC/m^2]AOVPC_c_veg.nc.zip165900NetCDF
AOVPC_climber_atmosphere.ncAOVPC (Atmosphere-Ocean-Vegetation-Peat-Coral)climatological monthly mean values of CLIMBER atmospheric and surface fieldsAOVPC_climber_atmosphere.nc.zip39800NetCDF
AOVPC_climber_atmosphere.nctas - near-surface air temperature[K]
AOVPC_climber_atmosphere.ncpsl - air pressure at sea level[Pa]
AOVPC_climber_atmosphere.ncuas - near-surface eastward wind[m/s]
AOVPC_climber_atmosphere.ncvas - near-surface northward wind[m/s]
AOVPC_climber_atmosphere.ncpr - precipitation flux[kg/(m^2 s)]
AOVPC_climber_atmosphere.ncevspsbl - water evaporation flux[kg/(m^2 s)]
AOVPC_climber_atmosphere.nctos - sea surface temperature[K]
AOVPC_climber_atmosphere.ncsic - sea ice area fraction[%]
AOVPC_climber_history.ncAOVPC (Atmosphere-Ocean-Vegetation-Peat-Coral)annual time series output of CLIMBER diagnosticsAOVPC_climber_history.nc.zip483NetCDF
AOVPC_climber_history.ncco2 - atmospheric CO2 concentration[ppm]
AOVPC_climber_history.nctg - global mean surface air temperature[K]
AOVPC_climber_history.nctn - NH mean surface air temperature[K]
AOVPC_climber_history.ncts - SH mean surface air temperature[K]
AOVPC_climber_history.nctl - land mean surface air temperature[K]
AOVPC_climber_history.ncto - ocean mean surface air temperature[K]
AOVPC_climber_history.ncprc - global mean precipitation[kg/(m^2 s)]
AOVPC_climber_history.ncsst - global mean sea surface temperature[K]
AOVPC_climber_history.ncss - global mean sea surface salinity[psu]
AOVPC_climber_history.ncrb - global mean heat flux to the ocean[W]
AOVPC_climber_history.ncttrp - Tropical (20S-20N) temperature[K]
AOVPC_climber_history.nctant - Antarctic temperature[K]
AOVPC_climber_history.ncfatmx - Maximum Atlantic Northward heat transport[PW]
AOVPC_climber_history.ncxamx - Maximum Atlantic overturning[Sv]
AOVPC_climber_history.ncxamx - Maximum Atlantic overturning[Sv]