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Global Attributes:	Conventions: CDC Non-gridded title: 4x Daily Spectral Coefficients from the NMC Reanalysis for Orography at the Surface history: created June 95 by R.H. Schweitzer (NETcdF2.3) FOR EACH LATITUDE (going from north pole to south pole). THE ASSOCIATED LEGENDRE FUNCTIONS ARE DEFINED: PBAR(M,N,THETA) = SQRT((2N+1)FACTORIAL(N-M)/(2FACTORIAL(N+M))) SIN(THETA)M/(2NFACTORIAL(N)) TIMES THE (N+M)TH DERIVATIVE OF (X2-1)N WITH RESPECT TO X=COS(THETA) note: theta = 0.5pi - phi, where phi is latitude and theta is colatitude. Therefore, cos(theta) = sin(phi) and sin(theta) = cos(phi). where n is degree (subscript), m is order (superscript), and theta is colatitude in radians. The functions are orthogonal polynomials on the surface of the sphere and are normalized so that the integral of (PBAR(n,m,theta)*2)sin(theta) on the interval theta=0 to theta=pi equals 1. NOTE THAT PBAR(0,0,THETA) = SQRT(2)/2 description: Data is from NMC initialized reanalysis platform: Model m_fastest: F storage_type: Spectral compression_used: T dataset_title: NCEP-NCAR Reanalysis 1 _NCProperties: version=2,netcdf=4.6.3,hdf5=1.10.5

Variables:	orog: Array of 32 bit Reals [num_values = 0..4031] num_values: long_name: Spectral Coefficients for Orography at the Surface actual_range: -213.4263, 335.4287 units: m missing_value: 9999.0 trunc_count: 62 trunc_type: Triangular var_desc: Orography level_desc: Surface statistic: Individual Obs parent_stat: Other dataset: NCEP Reanalysis _ChunkSizes: 4032

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DDS:

Dataset {
    Float32 orog[num_values = 4032];
} Datasets/ncep.reanalysis/spectral/orog.spec.nc;

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