Did the ECMWF seasonal forecast model outperform a statistical model over the last 15 years?

Title
Did the ECMWF seasonal forecast model outperform a statistical model over the last 15 years?
Technical memorandum
Date Published
09/2003
Secondary Title
ECMWF Technical Memoranda
Number
418
Author
G.J. van Oldenborgh
D.L.T. Anderson
Publisher
ECMWF
URL https://www.ecmwf.int/en/elibrary/76797-did-ecmwf-seasonal-forecast-model-outperform-statistical-model-over-last-15-years
DOI 10.21957/in9fnw5wu