Journal of the Meteorological Society of Japan. Ser. II
Online ISSN : 2186-9057
Print ISSN : 0026-1165
ISSN-L : 0026-1165
Unified Notation for Data Assimilation : Operational, Sequential and Variational (gtSpecial IssueltData Assimilation in Meteology and Oceanography: Theory and Practice)
Kayo IdePhilippe CourtierMichael GhilAndrew C. Lorenc
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1997 Volume 75 Issue 1B Pages 181-189


The need for unified notation in atmospheric and oceanic data assimilation arises from the field's rapid theoretical expansion and the desire to translate it into practical applications. Self-consistent notation is proposed that bridges sequential and variational methods, on the one hand, and operational usage, on the other. Over various other mottoes for this risky endeavor, the authors selected: "When I use a word, " Humpty Dumpty said, in rather a scornful voice tone, "it means just what I choose it to mean - neither more more less. "Lewis Carroll, 1871.

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