retrieval_gain_matrix

typhon.retrieval.oem.retrieval_gain_matrix(K, S_a, S_y)

Calculate the averaging kernel matrix.

Parameters:

• K (np.array) – Simulated Jacobians.

• S_a (np.array) – A priori error covariance matrix.

• S_y (np.array) – Measurement covariance matrix.

Returns:

Retrieval gain matrix.

Return type:

np.array