Identifying counter-gradient term in atmospheric convective boundary layer

Since Deardoff [5] derived the counter-gradient term contribution, a good representation has been searched for this term. An inverse problem methodology is used to identify this property. The inverse analysis is performed minimizing an objective function: the square difference between experimental and model data added to a regularization function. Two regularization functions are used: second-order maximum entropy, and Tikhonov regularization of second-order. The scheme is tested with synthetic noise data. A new formulation for the counter-gradient is also presented.