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NCEPLIBS-ip
5.0.0
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Analyze spectral from Fourier. More...
Go to the source code of this file.
Functions/Subroutines | |
| subroutine | spanaly (I, M, IM, IX, NC, NCTOP, KM, WGT, CLAT, PLN, PLNTOP, MP, F, SPC, SPCTOP) |
| Analyzes spectral coefficients from Fourier coefficients for a latitude pair (Northern and Southern hemispheres). More... | |
Analyze spectral from Fourier.
| Date | Programmer | Comments |
|---|---|---|
| 91-10-31 | Mark Iredell | Initial. |
| 94-08-01 | Mark Iredell | Moved zonal wavenumber loop inside. |
| 1998-12-15 | Iredell | Openmp directives inserted. |
Definition in file spanaly.f.
| subroutine spanaly | ( | I, | |
| M, | |||
| IM, | |||
| IX, | |||
| NC, | |||
| NCTOP, | |||
| KM, | |||
| WGT, | |||
| CLAT, | |||
| real, dimension((m+1)*((i+1)*m+2)/2) | PLN, | ||
| real, dimension(m+1) | PLNTOP, | ||
| integer, dimension(km) | MP, | ||
| real, dimension(ix,2,km) | F, | ||
| real, dimension(nc,km) | SPC, | ||
| real, dimension(nctop,km) | SPCTOP | ||
| ) |
Analyzes spectral coefficients from Fourier coefficients for a latitude pair (Northern and Southern hemispheres).
Vector components are multiplied by cosine of latitude.
| I | spectral domain shape (0 for triangular, 1 for rhomboidal) |
| M | spectral truncation |
| IM | even number of Fourier coefficients |
| IX | dimension of Fourier coefficients (IX>=IM+2) |
| NC | dimension of spectral coefficients (NC>=(M+1)*((I+1)*M+2)) |
| NCTOP | dimension of spectral coefficients over top (NCTOP>=2*(M+1)) |
| KM | number of fields |
| WGT | Gaussian weight |
| CLAT | cosine of latitude |
| PLN | Legendre polynomials |
| PLNTOP | Legendre polynomial over top |
| MP | identifiers (0 for scalar, 1 for vector) |
| F | Fourier coefficients combined |
| SPC | spectral coefficients |
| SPCTOP | spectral coefficients over top |
Definition at line 35 of file spanaly.f.
Referenced by sptranf1().