Long-Term Changes of Greenhouse Gases in the Ocean and Their Feedback Effects on the Climate

western and eastern sides of the North Pacific (e.g., Watanabe et al. 2003), which were superimposed on decadal oscillation. However, each study was based only on a time series of a local fixed observation point, and/or the composite of different qualitative data sets with large systematic errors. Thus, it is difficult to comprehend quantitatively all the biogeochemical changes throughout the entire polar/ subpolar region, and to clarify the consequent factors causing a biogeochemical impact such as the imbalance of nitrogen and/or carbon in the ocean. The integrative analysis derived from a time series of several fixed observation points is necessary. Here we have focused on several time series data sets covering the North Pacific region, and have tried to integrate them in order to clarify the possibili ty of biogeochemical change such as a shift of biological species. In addition, according to these biogeophysical decadal changes in the North Pacific, it is important to clarify whether the feedback systems to the climate changes work or not. Therefore, we tried to construct a spatiotemporal algorithm of several properties as feedback Long-Term Changes of Greenhouse Gases in the Ocean and Their Feedback Effects on the Climate