The primary objective of ESPAS is to support the access to observations from the near‐Earth space environment. This is a
region that extends from the Eart's atmosphere up to the inner magnetosphere. Observing instruments that are linked to
ESPAS include ionosondes, incoherent scatter radars, magnetometers, GNSS receivers and a large number of space sensors
and radars. The ESPAS platform supports the systematic exploration of multi‐point measurements from near‐Earth space
through homogeneous access to diverse data, enhances researchers' capability to develop advanced models of the geospace,
supports data assimilation and provides tools for validation of models. Although the system development is in its early phase,
the consortium has already started to analyse indicative scientific problems, whose study will be possible through the use of
ESPAS services. The scientific advances resulting from these studies will lead to the development of validated scientific
models and consequently to reliable predictions and related products and value‐added services that will meet the needs of
scientists, operators, decision makers, system developers, etc. An important work done within the ESPAS project is the
definition of several scientific scenarios called "use cases". The "use cases" express the user requirements on the ESPAS
system, in other words they express "what" the system should be able to perform. These scenarios are exploring the required
behaviour of ESPAS and form a solid basis for testing the system's behaviour as it responds to a request that originates from
outside of the system. The following main groups of use cases are under analysis and first results will be reported in the
ESWW10: a) Homogenised access to the main ESPAS data repositories b) coincidences and conjunctions between groundspace
and space‐space monitoring units c) tools to validate models d) on line implementation of models able to support
space weather prediction services.