Sensitivity of limited area model data assimilation to lateral boundary condition fields
نویسندگان
چکیده
منابع مشابه
A Harmonic-Fourier Spectral Limited-Area Model with an External Wind Lateral Boundary Condition*
In comparison to the Tatsumi’s spectral method, the harmonic-Fourier spectral method has two major advantages. 1) The semi-implicit scheme is quite efficient because the solutions of the Poisson and Helmholtz equations are readily derived. 2) The lateral boundary value problem of a limited-area model is easily solved. These advantages are the same as those of the spherical harmonics used in glo...
متن کاملApplication of Lateral Boundary Condition Perturbations to Help Restore Dispersion in Limited-Area Ensemble Forecasts
In a previous companion paper, the authors showed that lateral boundary condition (LBC) constraints on small scale error variance growth are sufficient to limit dispersion in limitedarea model (LAM) ensemble simulations. The error growth constraints result from the use of coarsely resolved and temporally interpolated LBCs. The effect is present in any modeling system using “one-way” LBC forcing...
متن کاملSicily Channel model: boundary condition sensitivity study
The Sicily Channel Regional Model forecasting system: initial boundary conditions sensitivity and case study evaluation S. Gaberšek, R. Sorgente, S. Natale, A. Ribotti, A. Olita, M. Astraldi, and M. Borghini IMC – International Marine Centre Loc. Sa Mardini, 09170 Oristano, Italy University of Ljubljana, Department of Mathematics and Physics, Jadranska 19, Ljubljana, 1000, Slovenia ISMAR CNR se...
متن کاملRe-thinking Sensitivity of Model Parameter Values in Soil Moisture Assimilation Using the Evolutionary Data Assimilation
The sensitivity of land surface model parameters is usually examined for one parameter at a time in response to changes in observation data and/or the model estimated output. This parameter independence approach assumes that there are limited interactions between model parameters a precondition which is highly unlikely for land surface models. Additionally, the model parameter values are widely...
متن کاملOptimal Boundary Discretization by Variational Data Assimilation
Variational data assimilation technique applied to the identification of the optimal discretization of interpolation operators and derivatives in the nodes adjacent to the boundary of the domain is discussed in frames of the linear shallow water model. The advantage of controlling the discretization of operators near boundary rather than boundary conditions is shown. Assimilating data produced ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Tellus A: Dynamic Meteorology and Oceanography
سال: 1990
ISSN: 1600-0870
DOI: 10.3402/tellusa.v42i1.11864