Steering Committee for the "Management and Operations of synchrotron-hosted analytical capabilities for Earth sciences research" On November 19, 2020 we sent a message soliciting nominations for members of a Steering Committee for the "Management and Operations of synchrotron-hosted analytical capabilities for Earth sciences research". We thank the community for submitting more than 40 nominations. The COMPRES Executive Committee and GSECARS senior staff ranked nominations for at-large community members of the steering committee with consideration to demographics (gender, career stage), areas of expertise (technique and science), and synchrotrons and other types of institutions represented. The COMPRES Executive Committee and GSECARS senior staff voted for 4 additional members from each of their current leadership. We are very pleased to announce that the following people have agreed to serve as members of the committee. Pamela Burnley, University of Nevada, Las Vegas Elizabeth Cottrell, Smithsonian National Museum of Natural History Tom Duffy, Princeton University Paul Fenter, Argonne National Laboratory Benjamin Gilbert, Lawrence Berkeley National Laboratory Peter Heaney, Pennsylvania State University Satish Myneni, Princeton University Wenlu Zhu, University of Maryland In addition the following 8 people from the GSECARS staff and the COMPRES Executive Committee have also agreed to serve on the committee. Carl Agee, University of New Mexico Antonio Lanzirotti, University of Chicago Mark Rivers, University of Chicago Anat Shahar, Carnegie Institution for Science Joanne Stubbs, University of Chicago Elizabeth Thompson, Sewanee: The University of the South Yanbin Wang, University of Chicago Heather Watson, Union College The NSF Dear Colleague Letter "Competition of Management and Operations of synchrotron-hosted analytical capabilities for Earth sciences research" has been modified to extend the timetable. It originally said that the solicitation was expected to be released in the fourth quarter of 2020, and the new proposal to be due in the second quarter of 2021. The revised version changes these dates by one quarter, so the solicitation is expected in the first quarter of 2021, and the proposal due in the third quarter of 2021. Mark Rivers, Co-Director GSECARS (rivers@cars.uchicago.edumailto:rivers@cars.uchicago.edu) Carl Agee, COMPRES President (agee@unm.edumailto:agee@unm.edu)