<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>Dear colleagues,</div><div><br data-mce-bogus="1"></div><div><div>The set of daily and weekly combined terrestrial frame (SINEX) solutions from the 3rd IGS reprocessing campaign (repro3) has now been extended up to GPS week 2237 (November 26, 2022).</div><div><br data-mce-bogus="1"></div><div>The extended repro3 SINEX combination products are the same and follow the same file naming convention as those for the period 1994-2020 (see <a data-mce-href="https://lists.igs.org/pipermail/igsmail/2021/008022.html" href="https://lists.igs.org/pipermail/igsmail/2021/008022.html">IGSMAIL-8026</a>), except for one small detail: the files containing the residuals from the daily SINEX combinations are now called *RES.SUM instead of *RES.RES to comply with <a data-mce-href="https://files.igs.org/pub/resource/guidelines/Guidelines_For_Long_Product_Filenames_in_the_IGS_v2.0.pdf" href="https://files.igs.org/pub/resource/guidelines/Guidelines_For_Long_Product_Filenames_in_the_IGS_v2.0.pdf">the latest IGS long product filename convention</a>.</div><div><br data-mce-bogus="1"></div><div>The extended repro3 SINEX combination products are for now available at <a href="ftp://igs-rf.ign.fr/pub/repro3" data-mce-href="ftp://igs-rf.ign.fr/pub/repro3">ftp://igs-rf.ign.fr/pub/repro3</a>. They will soon be uploaded to CDDIS.</div><div><br data-mce-bogus="1"></div><div>They are based on the contributions from 6 Analysis Centers:</div><div><div>* COD (Center for Orbit Determination in Europe)</div><div>* GFZ (GeoForschungsZentrum)</div><div>* GRG (Groupe de Recherche en Géodésie Spatiale)</div><div>* MIT (Massachusetts Institute of Technology)</div><div>* NGS (National Geodetic Survey)</div><div>* ULR (Université de la Rochelle)</div><div>which are gratefully acknowledged for their effort in extending their repro3 series.</div><div><br data-mce-bogus="1"></div><div>Like the combined repro3 SINEX solutions for the period 1994-2020, the extended repro3 SINEX solutions are expressed in the IGSR3 reference frame and consistent with the igsR3.atx antenna phase center corrections <span style="color: #000000; font-family: arial, helvetica, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;" data-mce-style="color: #000000; font-family: arial, helvetica, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">(see<span> </span></span><a data-mce-href="https://lists.igs.org/pipermail/igsmail/2021/008022.html" href="https://lists.igs.org/pipermail/igsmail/2021/008022.html" style="font-family: arial, helvetica, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff;" data-mce-style="font-family: arial, helvetica, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff;">IGSMAIL-8026</a><span style="color: #000000; font-family: arial, helvetica, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;" data-mce-style="color: #000000; font-family: arial, helvetica, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">). Note however that a full parallel series of repro3 SINEX solutions, expressed in the IGS20 reference frame and made consistent with the igs20.atx antenna phase center corrections (see <a data-mce-href="https://lists.igs.org/pipermail/igsmail/2022/008234.html" href="https://lists.igs.org/pipermail/igsmail/2022/008234.html">IGSMAIL-8238</a>), has also been derived and is available upon request.</span></div><div><span style="color: #000000; font-family: arial, helvetica, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;" data-mce-style="color: #000000; font-family: arial, helvetica, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;"><br data-mce-bogus="1"></span></div><div><span style="color: #000000; font-family: arial, helvetica, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;" data-mce-style="color: #000000; font-family: arial, helvetica, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">With this extension of the repro3 series up to the date of the switch of the IGS operational products to the IGS20/igs20.atx framework and the repro3 standards, it is now possible to form full, long-term IGS combined station position time series consistent with that framework. Such station position time series are available at <a href="ftp://igs-rf.ign.fr/pub/crd">ftp://igs-rf.ign.fr/pub/crd</a></span><span style="color: #000000; font-family: arial, helvetica, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;" data-mce-style="color: #000000; font-family: arial, helvetica, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">, where they will be updated on a weekly basis. Their format is described in <a href="ftp://igs-rf.ign.fr/pub/README_crd">ftp://igs-rf.ign.fr/pub/README_crd</a>.</span></div><div><br></div><div>Time series of other by-products from the daily IGS repro3/operational SINEX combinations are also available, and will similarly be updated on a weekly basis, including:</div><div>* daily SINEX combination statistics (<a href="ftp://igs-rf.ign.fr/pub/sum">ftp://igs-rf.ign.fr/pub/sum</a> ; <a href="ftp://igs-rf.ign.fr/pub/README_sum">ftp://igs-rf.ign.fr/pub/README_sum</a>),</div><div>* daily "AC - IGS" station position residuals (<a href="ftp://igs-rf.ign.fr/pub/res">ftp://igs-rf.ign.fr/pub/res</a> ; <a href="ftp://igs-rf.ign.fr/pub/README_res">ftp://igs-rf.ign.fr/pub/README_res</a><span data-mce-type="bookmark" id="mce_13_start" data-mce-style="overflow:hidden;line-height:0px" style="overflow:hidden;line-height:0px"></span>),</div><div>* daily "AC - IGS" ERP residuals (<a href="ftp://igs-rf.ign.fr/pub/erp">ftp://igs-rf.ign.fr/pub/erp</a> ; <a href="ftp://igs-rf.ign.fr/pub/README_erp">ftp://igs-rf.ign.fr/pub/README_erp</a>),</div><div>* daily "AC - IGS" apparent geocenter residuals (<a href="ftp://igs-rf.ign.fr/pub/gc">ftp://igs-rf.ign.fr/pub/gc</a> ; <a href="ftp://igs-rf.ign.fr/pub/README_gc">ftp://igs-rf.ign.fr/pub/README_gc</a>),</div><div>* daily "AC - IGS" scale factor residuals (<a href="ftp://igs-rf.ign.fr/pub/sc">ftp://igs-rf.ign.fr/pub/sc</a> ; <a href="ftp://igs-rf.ign.fr/pub/README_sc">ftp://igs-rf.ign.fr/pub/README_sc</a>).</div><div><br data-mce-bogus="1"></div><div>Best regards,</div><div><br data-mce-bogus="1"></div><div>Paul Rebischung</div><div><br data-mce-bogus="1"></div></div></div></div></body></html>