We congratulate also CITI-SENSE member Matevz Vucnik from the Jozef Stefan Institute, Ljubljana, who won the Outstanding Student Poster (OSP) Award contest at the EGU General Assembly 2015. The event was held in Vienna Austria from 12 to 17 April 2015. He has presented the poster entitled “Portable air quality sensor unit for participatory monitoring: an end-to-end VESNA-AQ based prototype”. The poster is describing the CITI-SENSE architecture from the sensor to the Web visualization application.