A mass-conserving non-iteration-dimensional-split semi-Lagrangian advection scheme for limited-area modelling

A newly developed mass‐conserving semi‐Lagrangian advection scheme for limited area modelling is illustrated, which requires no initial guess and no iteration for determining trajectories and is different from the traditional semi‐Lagrangian scheme. This scheme uses operator splitting to extend one...

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Veröffentlicht in:	Quarterly journal of the Royal Meteorological Society 2012-10, Vol.138 (669), p.2118-2125
Hauptverfasser:	Zhang, Yunfei, Juang, Hann-Ming Henry
Format:	Artikel
Sprache:	eng
Schlagworte:	Advection Copyrights Earth, ocean, space Exact sciences and technology External geophysics Interpolation mass conservation Meteorology Modelling Physics of the high neutral atmosphere Reproduction semi-Lagrangian Splitting Two dimensional
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Beschreibung
Zusammenfassung:	A newly developed mass‐conserving semi‐Lagrangian advection scheme for limited area modelling is illustrated, which requires no initial guess and no iteration for determining trajectories and is different from the traditional semi‐Lagrangian scheme. This scheme uses operator splitting to extend one dimension to multi‐dimensions to avoid 2D interpolation or remapping. In addition to the mass conservation, the scheme is relatively simple and is competitively accurate as compared to other semi‐Lagrangian schemes. Copyright © 2012 Royal Meteorological Society
ISSN:	0035-9009 1477-870X
DOI:	10.1002/qj.1938