Earth System Spatial Grid and Its Application Modes
YU Jie-qing · Geography and Geo-Information Science · 2012
The researches on global change and Earth System Science are quite related with medium-large-superlarge scale issues,which span spheres and projection zones.It has provided new demands for Global Spatial Grid(GSG),Global Geo-information System(GGIS) and Digital Earth.Based on analysis to current situations of GSG,this paper argues that it is necessary to develop an universal GSG,named as Earth System Spatial Grid(ESSG),which takes the multiple spheres of the planet Earth as a whole,to support the various researches on global change and Earth System Science.Referring to the application demands on GSG from multiple domains,eight basic requirements on ESSG are proposed in this paper.A SDOG-based ESSG is designed and implemented,which is in accordance to all the basic requirements.Seven potential application modes of SDOG-ESSG are introduced,which include Earth system data integration,Earth system object 3D modeling,Earth system object changes representation,Earth system spatial data indexing and cloud service,Earth system process simulating,and spatial environment planning and visualized decision-making.