PARASOL: development of an operational solar storm and high-energy particle forecasting system

We present ongoing and forthcoming developements for building an integrated model capable of propagating solar storms from the Sun to Earth, together with high-energy particle emissions from the solar corona by coupling different models. The resulting global model will be based on several world-renowned solar wind, CME and SEP models, some of which are already available to users 24/7 via the STORMS weather forecasting service (storms-service.irap.omp.eu) accredited by the CNRS and maintained by Infor'Marty and IRAP/University of Toulouse.The PARASOL project will introduce new coupling and data-driving methodologies in order to obtain continuous simulations of the complex interactions between solar storms and the solar wind, as well as the acceleration and propagation of high-energy particles between the Sun and the Earth. Solar imagery and in-situ data obtained in real time is use to not only to initialise the models, but also to constraint them continuously. We will discuss the layout of the new operational systems, together with the strategies for validation of each individual component and of the full chain. The end goal of the project is to lay out a complete operational space weather forecasting framework ready to be exploited by end-users noth in the public and private sectors.We acknowledge funding by ANR/AID (grant ANR-25-ASTR-0025, PARASOL).