original_query: What are some of the new developments in the theory and practice of data assimilation that Daley contributed to?
query: What are some of the new developments in the theory and practice of data assimilation that Roger Willis Daley contributed to?
answer: While the specific new developments aren't detailed, chunk 3 mentions that by 1995, Daley was a world leader in data assimilation due to his book and creative new developments in the theory and practice of data assimilation.  Chunk 6 describes his work on a 3D variational data assimilation system (NAVDAS) for the US Navy.