EOP C02 yearly files - Product metadata 

Combined series of EOP (x/y pole, UT1-UTC, LOD, dPsi, dEps; normal points at 5-day intervals)

This series are available from 1970 in the 1997 IERS system. It is regularly recomputed to take advantage on one hand of the improvement of the various individual contributions and in the other hand of the refinement of the analyses procedure. For each date at 5-day intervals, individual determinations available within +/- 2.5 days are brought to the central date by a modeled time variation of each of the EOP. The combined normal values are obtained by a weighted least square adjustment taking into account the covariance matrices of the individual determinations. The a priori standard deviations are based on the formal uncertainties associated with the individual values of the EOP, scaled to match the pair variance of the series, with added variances. (See 1996 IERS Annual Report p II-61 ).
The data are stored in yearly files since 1962.

ASCII

First line: I6,F10.3,2(F10.6),2(F11.7),2(F10.6)
Second line: 16X,2(F10.6),2(F11.7),2(F10.6)

http://hpiers.obspm.fr/eoppc/eop/eopc02/EOPC02.GUIDE

First line: Numerical code of the series, MJD, x ["], y ["], UT1-UTC [s], D [s], dPsi ["], dEps ["]
Second line: sigma_x ["], sigma_y ["], sigma_UT1-UTC [s], sigma_D [s], sigma_dPsi ["], sigma_dEps ["]

5 days

weekly

IERS Earth Orientation Centre

IERS Earth Orientation Centre

1996 IERS Annual Report p II-61

services.iers@obspm.fr

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