Milton, R.; Steed, A.; (2007) Mapping carbon monoxide using GPS tracked sensors. Environmental Monitoring and Assessment , 124 (1-3) pp. 1-19. 10.1007/s10661-006-9488-y.

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Abstract

In this paper we discuss a pilot study where we have mapped urban air pollution using mobile carbon monoxide (CO) sensors. Our objective is to use logs from tracked CO sensors to augment fixed sensor data in an urban environment. The concept is that by using many cheap mobile sensors in an ad-hoc fashion we will be able to facilitate new types of CO study that explore variations in CO at a fine geographic scale. We gather data using a data-logging package that consists of a personal digital assistant (PDA), an inexpensive Global Positioning System (GPS) receiver and a CO sensor. The critical issue in data processing is treatment of the imprecise logs from the GPS. By using knowledge about the route and geometry of the buildings we are able to increase the position accuracy significantly. Using corrected log files, we demonstrate and explore three potential scenarios of use of a mobile sensor:exploration of the situation of a fixed CO sensor, variation of CO along an urban canyon and discovery of intermittent but significant sources of CO. We conclude by discussing the results in the context of the push towards large sensor networks and mobile communications. The potential for ad-hoc mobile sensor networks may be very large.

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