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Gradient-Independent Models of Water, Energy and Carbon Fluxes - New Approaches for Modelling Global Water-Energy-Carbon Cycles
来源:LASG    访问次数:    报告时间:2017-7-17
【报告人】        Prof. Jingfeng Wang
【报告人单位】Georgia Institute of Technology, USA
【报告时间】    2017年7月17日(星期一)10:00
【报告地点】    科研楼303会议室
【报告简介】    Monitoring and modelling global water, energy and carbon cycles depend on remote sensing observations. Bulk transfer method based of fluxes models require near-surface water vapour, temperature and carbon dioxide concentration gradients data that cannot be measured by remote sensing instruments. A mathematical tool known as fractional calculus allows the gradient variables to be expressed analytically to the functionals of the time-series records of water vapour, temperature and carbon concentration. The MEP model of surface fluxes facilitates the parameterization of the eddy-diffusivity parameters in the diffusion equations describing the turbulent transport of the entities in the atmospheric boundary layer. The gradients independent fluxes models are more efficient than bulk transfer models due to its parsimony in model parameters and input and reduced sensitivity of the modeled fluxes to the uncertainties of the model input and parameters.
 
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