Plio-Pleistocene simulations from a global carbon cycle box model

DOI

Atmospheric CO2 reconstructions beyond ice core records are based on geochemical proxies, which bear proxy-specific intrinsic uncertainties. Here, we use the global carbon cycle box model BICYCLE-SE and explore possible changes in the carbon cycle during the last 4 Myr in order to improve existing interpretation of proxy-based CO2 reconstructions with focus on δ11B. Simulating the full marine carbon cycle the results can be compared with various variables of interest, and which are necessary within the context of the δ11B-based CO2 proxy. In detail, these are pH, dissolved inorganic carbon, total alkalinity, and pCO2 within the surface equatorial Atlantic or equatorial Pacific, the areas in which the sediment records are located, that are used for atmospheric CO2 reconstructions.In addition, simulated mean ocean δ13C is compared with various available data.The model is forced with changing physical boundary conditions, mainly changes in temperature and sea level, which are taken from a new data compilation. Simulated changes in surface and deep ocean carbonate ion and the depth of the calcite saturation horizons are further model ouput that can be used for evaluation of results. Finally, simulated / assumed solid Earth carbon fluxes (volcanic CO2 outgassing, carbonate and silicate weathering, coral reef growth, carbonate accumulation in the sediment and the net ocean-to-sediment fluxes) are included here.

Archive file (tgz) which includes besides a README:13 data files (ASCII), including headers explaining the dataBrief file description:Simulation results:- BICYCLE-SE_all_forcing_5ma_withheader.datImportant forcing time series for the BICYCLE-SE model- BICYCLE-SE_11scenarios_atmCO2_5Ma_withheader.datSimulated atmospheric CO2 concentration using the BICYCLE-SE model for 11 different scenarios- BICYCLE-SE_11scenarios_od13C_5Ma_withheader.datSimulated mean ocean 𝛿13C using the BICYCLE-SE model for 11 different scenarios- BICYCLE-SE_4scenarios_Atl_CO3_5Ma_withheader.datSimulated CO3 in the Atlantic (surface and deep) using the BICYCLE-SE model for 4 different scenarios- BICYCLE-SE_4scenarios_IPac_CO3_5Ma_withheader.datSimulated CO3 in the Indo-Pacific (surface and deep) using the BICYCLE-SE model for 4 different scenarios- BICYCLE-SE_4scenarios_Atl_IPac_CSH_5Ma_withheader.datSimulated Calcite Saturation Horizont (CSH) in the Atlantic and Indo-Pacific using the BICYCLE-SE model for 4 different scenarios- BICYCLE-SE_3scenarios_cfluxes_5Ma_withheader.datSimulated C fluxes (volcanic CO2 ougassing, carbonate and silicate weathering, coral reef growth, ocean2sediment net flux, sediment accumulation) using the BICYCLE-SE model for 3 different scenarios- BICYCLE-SE_11scenarios_seqAtl_seqIPac_CO2_5Ma_withheader.datSimulated pCO2 in surface equatorial Atlantic and in surface equatorial Indo-Pacific using the BICYCLE-SE model for 11 different scenarios- BICYCLE-SE_11scenarios_seqAtl_seqIPac_pH_5Ma_withheader.datSimulated pH in surface equatorial Atlantic and in surface equatorial Indo-Pacific using the BICYCLE-SE model for 11 different scenarios- BICYCLE-SE_11scenarios_seqAtl_seqIPac_DIC_5Ma_withheader.datSimulated dissolved inorganic carbon (DIC) in surface equatorial Atlantic and in surface equatorial Indo-Pacific using the BICYCLE-SE model for 11 different scenarios- BICYCLE-SE_11scenarios_seqAtl_seqIPac_TA_5Ma_withheader.datSimulated total alkalinity (TA) in surface equatorial Atlantic and in surface equatorial Indo-Pacific using the BICYCLE-SE model for 11 different scenarios ---------------Additional supporting data:- lisiecki2014p_d13c_interNAtl_deepPac_3Ma_withheader.dat3 Ma of marine 𝛿13C based on Lisiecki (2014, doi:10.1002/2013PA002505).- poore2006ggg_d13c_global_NA_SO_PA_5Ma_withheader.dat5 Ma of marine 𝛿13C based on Poore et al. (2006, doi:10.1029/2005GC001085).All further details are contained in the headers of the individual files.

Identifier
DOI https://doi.pangaea.de/10.1594/PANGAEA.940169
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.940169
Provenance
Creator Köhler, Peter
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2022
Rights Data access is restricted (moratorium, sensitive data, license constraints)
OpenAccess false
Representation
Language English
Resource Type Dataset
Format application/gzip
Size 2.4 MBytes
Discipline Chemistry; Natural Sciences