| Date: | 2013-01-15 17:59:44 | |
| Sender: | Gerard Petit <gpetit@bipm.org> | |
| Subject: | [SLR-Mail] No.2145: Updates to the IERS Conventions (2010) | |
| Author: | G | |
| Content: | ******************************************************************************** SLR Electronic Mail 2013-01-16 07:36:02 UTC Message No. 2145 ******************************************************************************** Author: Gérard Petit (IERS Conventions Center) Information on the updates to the IERS Conventions (2010) The IERS Conventions Center informs of the following updates: 15 January 2013 * Chapter 9 ”Models for atmospheric propagation delays” has been updated, see http://tai.bipm.org/iers/convupdt/convupdt_c9.html . Changes are the following: * Introduce the model Global Pressure and Temperature 2 in sections 9.2 ”Tropospheric model for radio techniques” and 9.3 ”Sources for meteorological data” (provided by J. Boehm). * In the section 9.4 ”Ionospheric models for radio techniques”, correct some numerical values in a number of equations for using exact CODATA (2010) values of fundamental constants (noted by R. Langley). Changes are not significant with respect to the uncertainties of the quantities. * Appendix E with the IUGG Resolution 3 Adopted at the XXVth General Assembly (2012), has been added, see http://tai.bipm.org/iers/convupdt/convupdt_ap.html . The USNO web site http://maia.usno.navy.mil/conv2010/convupdt.html has similarly been updated. Gérard Petit and Brian Luzum IERS Conventions Center ******************************************************************************** |