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This work presents an integrated mobile environmental sensing and analysis system developed to support the management of transport and urban air quality. A novel spectroscopic UV sensor is employed to provide second-by- second measurements of multiple pollutants at ppb levels. Sensor nodes are deployed on vehicles, infrastructure and people and feed data into a dynamically configurable e-science computing platform that scales to support both near real-time incident management and longer term strategic planning decisions. This paper describes the system architecture and sensor node design alongside results from system development testing. It goes on to highlight avenues for future development and the potential for further applications involving the wider sensors community.