Prediction of the ensemble varience of prediction error due to random errors in specifying the initial state, 1960s?

Prediction of the ensemble varience of prediction error due to random errors in specifying the initial state, 1960s?, - 06 PDT 4 Box 14 Folder 74, Box: 14, Folder: 74. Philip Duncan Thompson Papers, - 06-PDT. National Center for Atmospheric Research (NCAR) Archives. https://aspace.archives.ucar.edu/repositories/2/archival_objects/1566 Accessed December 19, 2025.