WeBaSOOP will reinforce in Serbia coordinator (VINCA) and partners institution (IRMB,PHIB) research hub by knowledge and skills related to PM monitoring and assessment, with the aim of association with the infrastructures. We will introduce innovative observing metrics and methods and address networking gaps.The internationally leading partners (NILU,CSIC,UNG,DEAKIN)have each central roles in the infrastructures and extensive knowledge of and experience with the European research system. They will gain regional understanding, new data and networks.