62nd International Astronautical Congress 2011 EARTH OBSERVATION SYMPOSIUM (B1) Improving Earth Observation thru Data Sharing (6)

摘要

In the last decades, man's behaviour has significantly modified many natural processes, undermining their secularequilibrium and as a consequence, increasing their power. The frequency, strength, and location of hazards areclosely connected to longer periods of global change, whether due to natural variations or human induced changes.The Ocean itself is a key component of the Earth's climate change and climate cannot be explained without a goodknowledge of Ocean parameters, such as Sea Ice extent, Heat content, Surface Temperature, Salinity etc. Thereforeenvironmental information is of crucial importance since it helps to understand how our planet and its climate arechanging. Due to diverse geo-climatic conditions, prevalent in different parts of the globe, different types ofdisasters strike both developed and developing countries, according to the vulnerability of the area, causingenormous destruction, producing negative impacts on national economies and significant psycho-social effects andsocial dislocations. In general the well-being and security of future generations are more than ever dependent oneveryone's actions and on the decisions being made today on environmental policies. To take the right actions,decision makers, businesses and citizens must be provided with reliable and up-to-date information on how ourplanet and its climate are changing. All depends on accurate information delivered in time to make a difference.ESA is leading a federation of Earth observation missions named GMES (Global Monitoring for Environment andSecurity) Space Component which has the objective to provide this non-stop information. GMES is continuouslyevolving and it consists in a complex set of systems which collects Earth Observation data from multiple sources,processes these data and provides users (with reliable and up-to-date information through dedicated services. In thislight and as part of the GMES Space Component, the Earth Observation Data Access Portfolio (EO-DAP), describesthe European coordinated approach for supplying satellite data to eligible users as well as the datasets and theconditions (e.g. ordering mechanisms, delivery timeliness, etc) under which these data are accessible.The GMES Space Component Data Access (GSCDA) is the interface for accessing the EO products. The paper aimsto show how the system implements, through dedicated services, a coordinated data access, in order to facilitateenvironmental investigations leading to a more complete understanding of human impact on the ecosystem. Aparticular emphasis has been placed on the role played by the GMES Services Account Manager as part of the EODAPManagement function (DAM).