Integrated Biosphere Simulator (IBiS)

Knowledge graph centered on Integrated Biosphere Simulator (IBiS) with 9 nodes and 16 connections. Top connected: climate-induced range shifts, soil organic carbon stabilization, Carbon Cycle Uncertainty Increases Climate Change , climate-ecosystem feedback, CO2 fertilization.

Method synopsis

Process-based dynamic global ecosystem modeling using IBiS to simulate terrestrial carbon storage responses to climate change, CO2 fertilization, and plant migration constraints. Uses leaf-level calculations for photosynthesis, respiration, and stomatal conductance with climate inputs to assess global carbon cycle responses.

Synthesized from method descriptions across 1 paper using this protocol.

Procedure from a recent peer-reviewed implementation

Steps below were extracted from the most recent peer-reviewed implementation of this protocol in the corpus — Carbon Cycle Uncertainty Increases Climate Change Risks and Mitigation Challenges (2012), Journal of Climate. Implementations in other papers (listed below) may differ.

1. IBiS model configuration
   Set up Integrated Biosphere Simulator (IBiS 2.6) with spatial resolution of 2.5° latitude by 3.75° longitude to match HadCM3 spatial resolution. Used historical climatology between 1961 and 1990 from New et al. (1999) datasets including monthly average temperature range, cloudiness, and number of rainy days. Required soil texture data from Global Soils Data Task Group (2000).
   Quantities: Global grid with 2.5° latitude by 3.75° longitude resolutionDuration: Near-equilibrium simulationsConditions: Required daily and hourly climate conditions produced by internal weather generator
   Equipment: IBiS 2.6 ecosystem model, Historical climatology datasets from New et al. (1999), Global Soils Data Task Group (2000) soil texture data
2. Carbon cycle simulations
   Conducted four separate IBiS simulations: 1) control climate, 2) A1FI climate without CO2 fertilization of plant growth, 3) A1FI climate with CO2 fertilization, and 4) A1FI climate with limited (constrained) plant migration. For simulations without CO2 fertilization, held CO2 concentrations at 350 ppm. For limited migration simulation, allowed plant types to expand locally within existing grid cells but prohibited movement to new grid cells.
   Quantities: Four distinct simulation scenariosDuration: Near-equilibrium carbon cycle responsesConditions: CO2 concentrations held at 350 ppm for non-fertilization simulations, unconstrained vs constrained plant migration scenarios
   Equipment: IBiS 2.6 with modified plant migration constraints

Typical Equipment

• IBiS 2.6 ecosystem model
• Historical climatology datasets from New et al. (1999)
• Global Soils Data Task Group (2000) soil texture data

Output Measurements

• terrestrial carbon storage
• plant biomass carbon
• soil carbon
• carbon flux responses

Papers Using This Protocol (1)