NULP-02S gravity field model up to degree/order 250 was developed based on EGG_TRF_2 GOCE radial gradients and Gauss quadrature formula in the frame of space-wise approach by National University “Lviv Polytechnic” (Institute of Geodesy, Laboratory for Theoretical Geodesy and Data Processing). All details of data pre-processing and applied method for model developing are presented in the paper “Gravity field models derived from the second degree radial derivatives of the GOCE mission: a case study” (ANNALS OF GEOPHYSICS, 59, 6, 2016, S0649; doi:10.4401/ag-7049).

Input Data:- GOCE EGG_TRF_2 gradients from November 2009 to October 2013. - radial derivatives of the EGM2008 model to d/o 360 for both polar gaps as additional information at the Gaussian grid nodesto avoid these polar gaps instability. Calculation method:- Kalman filtration of the radial derivatives with additional smoothing by Gauss filtering - Formation of Gaussian grid of radial gradients using modified local non-smooth splines - Estimation of harmonic coefficients via Gauss quadrature formula