EOP C04 COMBINED SERIES  
Interactive EOP selection | Interactive plot | Interactive Analysis | C04 - Individual series


EOP Combined Serie C04 consistent with ITRF 2008:
  • Final values for the period extending to 30 days back with respect to now. The last 30 days values are no more shown since December 1 2011.
  • Solution from 1962 until the last month : Daily EOP combined series C04 08 (recomputed from 1984 according to improved algorithm), fully consistent with ITRF 2008, replacing former 05 C04 since February 2011, and updated two times per week -

2 versions according to the precession-nutation models:
Graphics:
  • VLBI, GPS, SLR & DORIS operational series compared to C04 for the passed 365 days. Bias & standard deviation
  • Plot of the polar motion/LOD/UT1 2009-current week with 30 days prediction (up-dated two times per week)

What is new :
  • UT1 and celestial pole offsets constrained by IVS combined solution
  • Polar motion consistent with International Reference Frame ITRF 2008

Technical note



INTERACTIVE SEARCH FOR EOP C04  
1962-current week - More details on C04 series








Remove tidal variations1


ΔLOD / date 2
Δω3 / date 3






Starting date Ending date
Year

Month

Day

Year
Month
Day

    




INTERACTIVE PLOT FOR EOP C04  
Make plot : select type and span Description of C04 series




Dimension du graphe :
X


cm

Remove tidal variations1


ΔLOD / date 2
Δω3 / date 3




Starting date Ending date
Year

Month

Day

Year
Month
Day
Label in french
Label in english

    



1- Variations produced by the solid Earth zonal tides (IERS 2000 model)
2- Length of day refered to 86400 s TAI
3- Earth angular velocity refered to the nominal value of 72921151.467064 picorad/s