An OPeNDAP-based system to implement earth science data sharing

Based on OPeNDAP, Open-source Project for a Network Data Access Protocol, a conceptual framework is designed for Earth Science Data Sharing and an Earth System Data Record (ESDR) oriented data sharing architecture is proposed together with its workflow. Based on the above system architecture, the ESDRs data distribution prototype is developed to distribute the data sets freely to the earth science community. Using the global data of precipitation, surface pressure, specific humidity, air temperature and wind speed during the period of 1948-2006 with different spatial and temporal scales as the shared data resources, the proposed architecture is applied to the project MEaSUREs, Making Earth System data records for Use in Research Environments. An Earth Information Science Data Sharing prototype is developed with application instances, in which transparent sharing is realized based on the protocol oriented for all data users. Also, 2D, 3D and time-dimension based 4D dynamic emulations are supported to provide the government with reference for their decision making.