NCEPLIBS-sp  2.3.3
spanaly.f File Reference

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Functions/Subroutines

SPANALY Analyzes spectral coefficients from fourier coefficients

for a latitude pair (northern and southern hemispheres).

Vector components are multiplied by cosine of latitude.

PROGRAM HISTORY LOG:

  • 91-10-31 MARK IREDELL
  • 94-08-01 MARK IREDELL MOVED ZONAL WAVENUMBER LOOP INSIDE
  • 1998-12-15 IREDELL OPENMP DIRECTIVES INSERTED
Parameters
I- INTEGER SPECTRAL DOMAIN SHAPE (0 FOR TRIANGULAR, 1 FOR RHOMBOIDAL)
M- INTEGER SPECTRAL TRUNCATION
IM- INTEGER EVEN NUMBER OF FOURIER COEFFICIENTS
IX- INTEGER DIMENSION OF FOURIER COEFFICIENTS (IX>=IM+2)
NC- INTEGER DIMENSION OF SPECTRAL COEFFICIENTS (NC>=(M+1)*((I+1)*M+2))
NCTOP- INTEGER DIMENSION OF SPECTRAL COEFFICIENTS OVER TOP (NCTOP>=2*(M+1))
KM- INTEGER NUMBER OF FIELDS
WGT- REAL GAUSSIAN WEIGHT
CLAT- REAL COSINE OF LATITUDE
PLN- REAL ((M+1)*((I+1)*M+2)/2) LEGENDRE POLYNOMIALS
PLNTOP- REAL (M+1) LEGENDRE POLYNOMIAL OVER TOP
MP- INTEGER (KM) IDENTIFIERS (0 FOR SCALAR, 1 FOR VECTOR)
F- REAL (IX,2,KM) FOURIER COEFFICIENTS COMBINED
SPC- REAL (NC,KM) SPECTRAL COEFFICIENTS
SPCTOP- REAL (NCTOP,KM) SPECTRAL COEFFICIENTS OVER TOP
subroutine spanaly (I, M, IM, IX, NC, NCTOP, KM, WGT, CLAT, PLN, PLNTOP, MP, F, SPC, SPCTOP)
 

Detailed Description

Analyze spectral from fourier

Author
IREDELL
Date
92-10-31

Definition in file spanaly.f.