************************************************************************ IERS Message No. 522 February 14, 2025 ************************************************************************ IERS Technical Note on the 2nd EOP PCC is available online Dear Colleagues, The Second Earth Orientation Parameters Prediction Comparison Campaign (2nd EOP PCC) Office is pleased to announce to the community the availability of an IERS Technical Note describing the course of the 2nd EOP PCC, available at the following link: https://www.iers.org/IERS/TN42 The 2nd EOP PCC Technical Note includes the summary of actions taken by the Office, example analyses, and detailed descriptions of the prediction methods used by campaign participants. The EOP PCC Office would like to thank all the participants for their efforts, cooperation, and engagement in the campaign. The Technical Note supplements the following articles, which can be retrieved here: Evaluation of selected short-term predictions of UT1-UTC and LOD collected in the Second Earth Orientation Parameters Prediction Comparison Campaign. https://doi.org/10.1186/s40623-022-01753-9 Second Earth Orientation Parameters Prediction Comparison Campaign (2nd EOP PCC): overview. https://doi.org/10.2478/arsa-2022-0021 Prospects of Predicting the Polar Motion Based on the Results of the Second Earth Orientation Parameters Prediction Comparison Campaign. https://doi.org/10.1029/2023EA003278 Assessment of length-of-day and universal time predictions based on the results of the Second Earth Orientation Parameters Prediction Comparison Campaign. https://doi.org/10.1007/s00190-024-01824-7 Findings on celestial pole offsets predictions in the Second Earth Orientation Parameters Prediction Comparison Campaign (2nd EOP PCC). https://doi.org/10.1186/S40623-024-02042-3 The data collected during the campaign are available at the following link: https://doi.org/10.5880/GFZ.1.3.2023.001 Many thanks to colleagues at the IERS Central Bureau at BKG for their efficient assistance and cooperation in finalizing the 2nd EOP PCC Technical Note. Kind regards, Jolanta Nastula Chair of 2nd EOP PCC Office and IERS Working Group on the 2nd EOP PCC ************************************************************************ IERS Messages are edited and distributed by the IERS Central Bureau. If not stated otherwise, the IERS is only the distributor of the message and is not responsible for its content. To submit texts for distribution, please write to . To subscribe or unsubscribe, please create an IERS account or modify it: https://www.iers.org/Login/Login/EN/login_node.html or write to . Archives: http://www.iers.org/IERS/Messages ************************************************************************