Currently

ocean data portals are being developed around the world based on Geographic Information Systems (GIS) as a source of ocean data and information. However

given the relatively high temporal frequency and the intrinsic spatial nature of ocean data and information

no current GIS software is adequate to deal effectively and efficiently with spatiotemporal data. Furthermore

while existing ocean data portals are generally designed to meet the basic needs of a broad range of users

they are sometimes very complicated for general audiences

especially for those without training in GIS. In this paper

a new technical architecture for an ocean data integration and service system is put forward that consists of four layers: the operation layer

the extract

transform

and load (ETL) layer

the data warehouse layer

and the presentation layer. The integration technology based on the XML

ontology

and spatiotemporal data organization scheme for the data warehouse layer is then discussed. In addition

the ocean observing data service technology realized in the presentation layer is also discussed in detail

including the development of the web portal and ocean data sharing platform. The application on the Taiwan Strait shows that the technology studied in this paper can facilitate sharing

access

and use of ocean observation data. The paper is based on an ongoing research project for the development of an ocean observing information system for the Taiwan Strait that will facilitate the prevention of ocean disasters.