The anomalous climate conditions in the atmosphere and ocean over the North Pacific starting in 1998/99 are revisited using the updated data in the last five decade. The anomalous sea-surface temperatures and atmospheric circulations returned to the normal condition in the middle of the 2002. The sea-level displacement anomalies propagated as Rossby waves from the central North Pacific to Japan. It is suggested that the large part of the 1998/99 climate change can be understood as the quasi-decadal fluctuation of the East Pacific pattern and oceanic responses to it, and hence may be qualitatively different from the major climatic regime shifts in the 20th century.International Symposium on "Dawn of a New Natural History - Integration of Geoscience and Biodiversity Studies". 5-6 March 2004. Sapporo, Japan
