The implementation of international geospatial standards for earth and space sciences

The Earth and Space Sciences Informatics division of European Geosciences Union(EGU)and the Open Geospatial Consortium jointly organised a special event entitled:‘Implementation of international geospatial standards for earth and space sciences event’
at the EGU General Assembly meeting held in Vienna,April 2009.The event objectives included:(a)to discuss the integration of information systems from different geosciences disciplines;(b)to promote and discuss the present process to scale from specific and monolithic systems towards independent and modular enabling infrastructures
forming an earth system science(ESS)infrastructure;and(c)to show some of the latest advances in implementing open standards.This manuscript introduces the event motivations and describes the abstract and holistic framework,which can be used to situate the topics and the developments presented by the event speakers.This manuscript introduces important,and relatively new technologies to build a multi-disciplinary geosciences information system:the System of Systems approach and the Model Driven Approach.To achieve that,three important information infrastructure categories are recognised:(a)ESS information infrastructure;(b)geospatial information infrastructure;and(c)distributed information infrastructure.Digital Earth should support the discussed framework to accelerate information transfer from theoretical discussions to applications,in all fields related to global climate change,natural disaster prevention and response,new energy-source development,agricultural and food security,and urban planning and management.

Enabling interoperability for Digital Earth: Earth Science coverage access services

For Digital Earth,an important priority is to integrate data from multiple sources.Interoperability and metadata are key instruments to reach such an objective.Interoperability is achieved by adopting and applying international standards for service interfaces and data models.As far as geospatial information is concerned,interoperability recognizes three important,interrelated data concepts:feature,coverage,and map.The present work deals with Web services for coverage access.Coverage perspectives characterizing three geospatial communities-i.e.the Earth Science(ES),GIS and Digital Earth communities,are discussed.ES community requirements for coverage access services are presented and discussed making use of two methods concurrently:Critical Success Factor(CSF)analysis method supplemented through the use of Usage Cases.A CSF hierarchy and derived critical requirements and problems are introduced.An implementation approach consisting of four general principles is proposed.Access service categories emerging from the analysis are presented and their comparison with the present access services for the ES is discussed.