BoHuang
New Member
Dear all,
recently, I am working on the spinup simulation of CLM5-BGC with a VR grid. I want to explore the bio-geochemistry effect of recent land cover change in Europe. I produce the VR grid (1/4 degree in Europe region and 1 degree out of Europe) and generate the surface data. I replaced the land cover data with new ESA satellite dataset. Following the BGC-spinup case (1.5.5. Spinup of CLM5.0-BGC-Crop — ctsm release-clm5.0 documentation), I run AD mode (200 years), then post-AD mode (400 years). However, some dis-equilibrium grids locate in my key research domain (north Scandinavia).
1) Should I prolong the simulation to force the grids to reach equilibrium, or I can use the restart file to run a normal coupled simulation (compset: FHIST_BGC)?
2) I want to see the biogeochemistry effect change between 1992 and 2015. Should I follow the same approach to run the spinup simulation (AD mode and Post-AD mode) with land cover data 1992 and 2015, or I can use the restart file from 1992 simulation to initialize the simulation with land cover 2015?
3) Friedlingstein et al. (2019; Global Carbon Budget 2019) presented the carbon budget including the vegetation carbon (450-650 GtC) and the soils carbon (1500-2400 GtC). The total soil carbon (TOTSOMC) is ca. 3170 GtC in my post-AD simulation. The number seems much lager than the soil carbon budget. Should I change some parameters and re-run the spinup simulation?
Greetings,
Bo
recently, I am working on the spinup simulation of CLM5-BGC with a VR grid. I want to explore the bio-geochemistry effect of recent land cover change in Europe. I produce the VR grid (1/4 degree in Europe region and 1 degree out of Europe) and generate the surface data. I replaced the land cover data with new ESA satellite dataset. Following the BGC-spinup case (1.5.5. Spinup of CLM5.0-BGC-Crop — ctsm release-clm5.0 documentation), I run AD mode (200 years), then post-AD mode (400 years). However, some dis-equilibrium grids locate in my key research domain (north Scandinavia).
1) Should I prolong the simulation to force the grids to reach equilibrium, or I can use the restart file to run a normal coupled simulation (compset: FHIST_BGC)?
2) I want to see the biogeochemistry effect change between 1992 and 2015. Should I follow the same approach to run the spinup simulation (AD mode and Post-AD mode) with land cover data 1992 and 2015, or I can use the restart file from 1992 simulation to initialize the simulation with land cover 2015?
3) Friedlingstein et al. (2019; Global Carbon Budget 2019) presented the carbon budget including the vegetation carbon (450-650 GtC) and the soils carbon (1500-2400 GtC). The total soil carbon (TOTSOMC) is ca. 3170 GtC in my post-AD simulation. The number seems much lager than the soil carbon budget. Should I change some parameters and re-run the spinup simulation?
Greetings,
Bo