Assessment of the influences of air-sea interactions in the coastal regions and marginal seas onto the marine ecosystem
| A01-K2. Assessment of the influences of air-sea interactions in the coastal regions and marginal seas onto the marine ecosystem | |
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| PI | Naoki YOSHIE*(Senior Assistant Professor, Ehime University) |
[Doctral degree: *Oceanography]
In the past several years, we have been encountered the drastic changes of local-scale environment through the high frequent extreme weathers such as heavy rain or extreme heat, super typhoon. The effects of the local-scale environment changes on the marine ecosystem and biogeochemical cycle were matters of world concern. In this study, we investigate these effects in the coastal region and marginal sea of the mid-latitude by using both the ecosystem modeling and the field observation.
We have conducted to reproduce the ecosystem dynamics from the field observation by newly developed marine ecosystem and biogeochemical model (Figure 1), and clarified the important key processes by the sensitivity analysis of the model. Specifically, we observed the teleconnection of extreme heavy rain in the northern Kyusyu Island during the last summer on the marine ecosystem in the western Seto Inland Sea where 200 km far from the Kyusyu Island and try to reproduce them by the marine ecosystem model and analyze the key processes of them.
We also try to clarify not only the effects of the atmospheric events on the marine ecosystem but also the effects of the marine ecosystem on the atmospheric field in the mid-latitude. Phytoplankton of the marine ecosystem changes the sea surface temperature (SST) by its absorption of the shortwave from the solar. The SST field changed by phytoplankton changes the heal flux from the sea surface to the bottom atmosphere. We would like to show the interactions between atmosphere and ocean through the marine ecosystem responses (Figure 2).
Fig. 1: Schematic view of our model
Fig. 2: Schematic view of our study
