| | 1 | = ORCHIDEE_Biochar = |
| | 2 | This version of ORCHIDEE has been used in '''Pyrogenic carbon mineralisation the missing link in the global grassland-dominated fire carbon budget''' by Simon P.K. Bowrin, Matthew W. Jones, Philippe Ciais, Bertrand Guenet, Samuel Abiven. Submitted to Nature Geoscience |
| | 3 | |
| | 4 | == Abstract == |
| | 5 | Biomass recovery after wildfires often approximates pre-disturbance conditions. However, fire legacy carbon (C) fluxes hitherto-overlooked in global modelling indicate that post-fire terrestrial C retention through pyrogenic C (PyC) production, and losses via multiple pathways, must be considered to quantify the global fire C balance. Here we attempt a first quantification of the fire C balance using a land surface model run over 1901-2010. Global PyC production drives a soil carbon accumulation of ~280 TgC yr-1 which is partially offset by several legacy C losses totalling ~190 TgC yr-1 for a partial residual sink of ~90 TgC yr-1, giving a first mechanistic constraint on maximum annual PyC mineralisation (89 TgCyr-1) and a minimum PyC mean residence time of 5387 (1966-14100) yrs, assuming steady state. The residual is negative over forests and strongly positive over grassland-savannahs, suggesting contrasting roles of vegetation in the fire C cycle and the earth system. We were unable to mechanistically model PyC mineralisation due to a paucity of observational constraints, meaning that without assuming steady state, one cannot know the sign of the full fire C balance. Constraining PyC mineralisation rates is a critical research frontier for fire science, and would enable fuller understanding of fire’s role in the planetary C-cycle, with implications for attendant land use and conservation policies. |
| | 6 | |
| | 7 | == Code access == |
| | 8 | |
| | 9 | * See the version on the webinterface here : https://forge.ipsl.jussieu.fr/orchidee/browser/branches/publications/ORCHIDEE_Biochar |
| | 10 | * Extract it on a terminal as follow, type anonymous as password: |
| | 11 | {{{ |
| | 12 | svn co --username anonymous svn://forge.ipsl.jussieu.fr/orchidee/branches/publications/ORCHIDEE_Biochar ORCHIDEE |
| | 13 | }}} |
| | 14 | |
| | 15 | == Metadata == |
| | 16 | |
| | 17 | || DOI || || |
| | 18 | || Creator || Simon Bowring || |
| | 19 | || Affiliation || ENS || |
| | 20 | || Title || ORCHIDEE_Biochar || |
| | 21 | || Publisher || Institut Pierre Simon Laplace (IPSL) || |
| | 22 | || //PublicationYear// || 2018 || |
| | 23 | || //ResourceType// || Software || |
| | 24 | || //Rights// || This software is distributed under the CeCILL license || |
| | 25 | || //rightsURI // || http://www.cecill.info/ || |
| | 26 | || Subject || Land surface model, Soil organic matter, carbon isotopes || |
| | 27 | || //DataManager// || Karim Ramage (IPSL) || |
| | 28 | || //DataCurator// || Josefine Ghattas (IPSL) || |
| | 29 | || //ContactPerson// || Simon Bowring (ENS) || |
| | 30 | || //FundingReference// || || |
