Simulation Experiments
Point simulations
Representative sites
Super sites
Fluxnet sites
Manipulation experiments
Litter addition
Fertilization experiments
FACE
Warming experiments
Fully coupled regional simulations
Fully Coupled global simulations
Experimental Design
- Focus of experiments should be to:
- diagnose/quantify the strength and distribution of model biases,
- improve answers to the v1 questions, and
- investigate new science questions or hypotheses.
- Model experiments should be designed to highlight/test/exercise new V2 features:
- Demonstrate utility of topographic downscaling
- Explore lateral subsurface processes
- Test new hydrological processes with thermal physics and transport
- Test explicit microbial model, wetland hydrology & biogeochemistry, nutrient storage and transport, alternative nutrient cycling approaches, and dynamic vegetation
- Investigate agricultural impacts on different crop types
- Address land use change questions through scenario testing
- We should establish a plan and a schedule to assure we can accomplish all of the experiments we would like to do.
- For V1 BGC experiments, we borrowed the Historical + RCP 8.5 simulation protocol with alternative atmospheric CO2 coupling (RAD, BGC, FULL) from CMIP5.
- For V1 Water Cycle experiment, we eliminated experiments for topographic downscaling, which was not fully implemented in v1.
Biogeochemistry Experiments
The primary focus is to understand and quantify future century-scale changes in land (and ocean) carbon storage and fluxes. Simulations that would achieve this goal could be:
- idealized experiments to separate and quantify the sensitivity of land (and ocean) carbon cycle to changes in climate and atmospheric CO2,
- historical experiments to evaluate model performance and investigate the potential for observational constraints on future projects,
- future scenario experiments to quantify future changes in carbon storage and hence the atmospheric CO2 concentration and related climate change for given CO2 emissions trajectories.
Proposed experiments for the high-throughput model include:
- Idealized experiments designed to quantify carbon cycle feedback sensitivities
- Idealized 1% per year CO2, BGC coupling, C-driven, constant N-dep, aerosols, CH4 and other GHGs, no crops or LUC or management (140 y)
- Idealized 1% per year CO2, RAD coupling, C-driven, constant N-dep, aerosols, CH4 and other GHGs, no crops or LUC or management (140 y)
- Idealized 1% per year CO2, FULL coupling, C-driven, constant N-dep, aerosols, CH4 and other GHGs, no crops or LUC or management (140 y)
- Idealized experiments designed to quantify the influence of nutrient cycles on carbon cycle feedback sensitivities
- Idealized 1% per year CO2, BGC coupling, C-driven, increasing N-dep, aerosols, CH4 and other GHGs, no crops or LUC or management (140 y)
- Idealized 1% per year CO2, RAD coupling, C-driven, increasing N-dep, aerosols, CH4 and other GHGs, no crops or LUC or management (140 y)
- Idealized 1% per year CO2, FULL coupling, C-driven, increasing N-dep, aerosols, CH4 and other GHGs, no crops or LUC or management (140 y)
- Pre-industrial control experiment to quantify residual drift in climate and biogeochemical cycles
- 500–1000 y control, C-driven, constant N-dep, aerosols, CH4 and other GHGs, no crops or LUC or management (500–1000 y)
- Historical experiments designed to evaluate model performance and investigate emergent constraints
- Historical CO2, BGC coupling, C-driven, increasing N-dep, aerosols, CH4 and other GHGs, dynamic crops and LUC and management (165 y)
- Historical CO2, RAD coupling, C-driven, increasing N-dep, aerosols, CH4 and other GHGs, dynamic crops and LUC and management (165 y)
- Historical CO2, FULL coupling, C-driven, increasing N-dep, aerosols, CH4 and other GHGs, dynamic crops and LUC and management (165 y)
- Historical CO2, BGC coupling, E-driven, increasing N-dep, aerosols, CH4 and other GHGs, dynamic crops and LUC and management (165 y)
- Historical CO2, RAD coupling, E-driven, increasing N-dep, aerosols, CH4 and other GHGs, dynamic crops and LUC and management (165 y)
- Historical CO2, FULL coupling, E-driven, increasing N-dep, aerosols, CH4 and other GHGs, dynamic crops and LUC and management (165 y)
- Future scenario experiments to quantify future changes in carbon cycle storage for given CO2 emission trajectories
- SSP5-8.5 to 2100, BGC coupling, C-driven, increasing N-dep, aerosols, CH4 and other GHGs, dynamic crops and LUC and management (85 y)
- SSP5-8.5 to 2100, RAD coupling, C-driven, increasing N-dep, aerosols, CH4 and other GHGs, dynamic crops and LUC and management (85 y)
- SSP5-8.5 to 2100, FULL coupling, C-driven, increasing N-dep, aerosols, CH4 and other GHGs, dynamic crops and LUC and management (85 y)
- SSP5-8.5 to 2100, BGC coupling, E-driven, increasing N-dep, aerosols, CH4 and other GHGs, dynamic crops and LUC and management (85 y)
- SSP5-8.5 to 2100, RAD coupling, E-driven, increasing N-dep, aerosols, CH4 and other GHGs, dynamic crops and LUC and management (85 y)
- SSP5-8.5 to 2100, FULL coupling, E-driven, increasing N-dep, aerosols, CH4 and other GHGs, dynamic crops and LUC and management (85 y)
- Extension of future scenario experiments to quantify non-linear carbon cycle feedbacks, strengthening of biogeophysical & biogeochemical feedbacks, and shifting strength of ocean and land feedbacks
- SSP-8.5 to 2300, BGC coupling, C-driven, increasing N-dep, aerosols, CH4 and other GHGs, dynamic crops and LUC and management (200 y)
- SSP-8.5 to 2300, RAD coupling, C-driven, increasing N-dep, aerosols, CH4 and other GHGs, dynamic crops and LUC and management (200 y)
- SSP-8.5 to 2300, FULL coupling, C-driven, increasing N-dep, aerosols, CH4 and other GHGs, dynamic crops and LUC and management (200 y)
Water Cycle Experiments
Cryosphere Experiments