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IERS Message No. 195                                    October 18, 2011
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Information on the updates to the IERS Conventions (2010)


The IERS Conventions Center informs of the following updates:

* Chapter 5 "Transformation between the ITRS and GCRS" has been updated
on 14 October 2011, see
http://tai.bipm.org/iers/convupdt/convupdt_c5.html .

The header of the subroutine PMSDNUT2.F has been corrected to point to
the right section of Chapter 5 and to provide a new test case.

* Chapter 6 "Geopotential" has been updated on 14 October 2011, see
http://tai.bipm.org/iers/convupdt/convupdt_c6.html .

Correct errors in the file fes2004_Cnm-Snm.dat: Coefficients for the
waves Sa and P1 were computed with an erroneous phase.
In the section 6.3.2 "Ocean tide models", part "FES2004", insert a
warning concerning the phase of the C20 term of the very long period
waves (update dated 23 September 2011).

* Chapter 7 "Displacement of reference points" has been updated on 14
October 2011, see
http://tai.bipm.org/iers/convupdt/convupdt_c7.html .

The subroutine ARG2.F has been corrected to not modify internally the
IYEAR argument (the four-digit year).
The bug was introduced at the update dated 23 September 2011.


The USNO web site http://maia.usno.navy.mil/conv2010/convupdt.html has
also been updated.


Gerard Petit and Brian Luzum
IERS Conventions Center


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