! (C) Copyright 1987- ECMWF. ! (C) Copyright 1987- Meteo-France. ! ! This software is licensed under the terms of the Apache Licence Version 2.0 ! which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. ! In applying this licence, ECMWF does not waive the privileges and immunities ! granted to it by virtue of its status as an intergovernmental organisation ! nor does it submit to any jurisdiction. ! MODULE PRFI2_MOD CONTAINS SUBROUTINE PRFI2(KM,KMLOC,KF_FS,PAIA,PSIA) !**** *PRFI2* - Prepare input work arrays for direct transform ! Purpose. ! -------- ! To extract the Fourier fields for a specific zonal wavenumber ! and put them in an order suitable for the direct Legendre ! tranforms, i.e. split into symmetric and anti-symmetric part. !** Interface. ! ---------- ! *CALL* *PRFI2(..) ! Explicit arguments : ! -------------------- KM - zonal wavenumber ! KMLOC - local zonal wavenumber ! PAIA - antisymmetric part of Fourier ! components for KM (output) ! PSIA - symmetric part of Fourier ! components for KM (output) ! Implicit arguments : The Grid point arrays of the model. ! -------------------- ! Method. ! ------- ! Externals. PRFI2B - basic copying routine ! ---------- ! Reference. ! ---------- ! ECMWF Research Department documentation of the IFS ! Author. ! ------- ! Mats Hamrud and Philippe Courtier *ECMWF* ! Modifications. ! -------------- ! Original : 87-11-25 ! Modified : 91-07-01 Philippe Courtier/Mats Hamrud - Rewrite ! for uv formulation ! Modified : 93-03-19 D. Giard - CDCONF='T' ! Modified : 93-??-?? ???????? - CDCONF='C'--> bug if CDCONF='T' ! Modified : 93-05-13 D. Giard - correction of the previous bug ! Modified : 93-11-18 M. Hamrud - use only one Fourier buffer ! Modified : 94-04-06 R. El Khatib - Full-POS configuration 'P' ! M.Hamrud : 94-11-01 New conf 'G' - vor,div->vor,div ! instead of u,v->vor,div ! MPP Group: 95-10-01 Support for Distributed Memory version ! Modified : 04/06/99 D.Salmond : change order of AIA and SIA ! ------------------------------------------------------------------ USE PARKIND1 ,ONLY : JPIM ,JPRB USE PRFI2B_MOD ,ONLY : PRFI2B ! IMPLICIT NONE ! DUMMY INTEGER SCALARS INTEGER(KIND=JPIM) , INTENT(IN) :: KM INTEGER(KIND=JPIM) , INTENT(IN) :: KMLOC INTEGER(KIND=JPIM) , INTENT(IN) :: KF_FS REAL(KIND=JPRB) , INTENT(OUT) :: PSIA(:,:), PAIA(:,:) ! LOCAL INTEGER SCALARS ! ------------------------------------------------------------------ !* 2. EXTRACT SYM./ANTISYM. FIELDS FROM TIME T+1. ! ------------------------------------------- CALL PRFI2B(KF_FS,KM,KMLOC,PAIA,PSIA) ! ------------------------------------------------------------------ END SUBROUTINE PRFI2 END MODULE PRFI2_MOD