1. Real time mobile sensing of the environment Peter Landshoff Rod Jones Michael Simmons Eiman Kanjo Iq Mead Mark Hayes Mark Calleja NO 2 mobile sensing: [Calleja]

2. GPS (location) GPRS (data transmission) SENSORS archive Real time data processing/ data assimilation PRODUCTS Environment….. Regulation…… Exposure….. Transport….. …… Other data (met, traffic….) mobile sensor network Combine technologies to provide sensitive low cost sensor network [Kanjo, Louden, Mead] [Hayes]

3. Changes in air quality driven by both traffic and meteorology Pollution events Sensor reproducibility Multiple species measurement [Stewart, Jobalja, Mead]

4. Carbon Monoxide Multi-species real time high spatial resolution mapping of air quality in complex environments Nitrogen Dioxide Nitric Oxide Urban composition is highly structured, variable, interdependent and complex…. [Stewart, Jobalja, Mead]

5. Sensors14:30-14:4514:45-15:3015:30-16:3016:30-17:2017:20-17:30 A12 (gp1)ChemZONE AZONE BZONE CCCB A13 (gp1)Dept. A15 (gp2)ZONE BZONE CZONE A A16 (gp2) A17 (gp3)ZONE CZONE AZONE BChem A19 (gp3)CCBDept. 29/01/2009 14:30 - 17:30 Central Cambridge split into 3 zones (A, B & C) 6 sensors divided into 3 groups. A14 joined expt. at 16:30. CCB Chem Dept

9. Preliminary comparison with validated site (CCC) Laboratory cal/cross interference

10. Junction (Very high traffic density) High traffic density Static traffic Moderate traffic density Low traffic density No traffic

11. Gonville Place, 15:48 [CO] = 2,000 ppb Lensfield Rd, 14:47 [CO] = 714 ppb Emmanuel Rd, 17:10 [CO]= 1,062 ppb A12 30s CO Central Cambridge

12. Bus Station, 16:14 [NO] = 1. 527 ppm Zone B average,14:45-15:30 [NO] = 0.151 ppm Zone A average,16:30-17:20 [NO] = 0.163 ppm A15 30s NO Zone A Cambridge Lensfield Rd, 17:07 [NO] = 392.9 ppb

13. A15 30s NO Zone C Cambridge Emmanuel Rd, 16:14 [NO] = 820 ppb

14. A15 30s NO Zone B Cambridge Gonville Place, 15:35 [NO] = 358 ppb

15. 15:01-15:04 All conc. in ppb [CO] = 126 ± 15 [NO] = 188 ± 42 [NO2] = 30 ± 3 [CO] = 186 ± 17 [NO] = 59 ± 15 [NO2] = 31.8 ± 0.5 [CO] = 260 ± 22 [NO] = -13 ± 5 [NO2] = 26.7 ± 0.3 [CO] = 89 ± 26 [NO] = -33 ± 5 [NO2] = 29.5 ± 0.8 [CO] = 84 ± 14 [NO] = 83 ± 15 [NO2] = 31.8 ± 0.5 [CO] = 616 ± 22 [NO] = 12 ± 6 [NO2] = 30.7 ± 0.5

16. 16:01-16:04 All conc. in ppb [CO] = -1 ± 17 [NO] = 105 ± 16 [NO2] = 26.9 ± 0.3 [CO] = 31 ± 6 [NO] = 37 ± 7 [NO2] = 31.9 ± 0.8 [CO] = 133 ± 28 [NO] = 43 ± 12 [NO2] = 34.1 ± 0.7 [CO] = 137 ± 9 [NO] = 60 ± 7 [NO2] = 29.9 ± 0.6

17. 17:01-17:04 All conc. in ppb [CO] = 31 ± 12 [NO] = 43 ± 10 [NO2] = 29.8 ± 0.5 [CO] = 133 ± 3 [NO] = -11 ± 3 [NO2] = 30.1 ± 0.3 [CO] = -26 ± 5 [NO] = 190 ± 19 [NO2] = 27.7 ± 0.2 [CO] = 192 ± 19 [NO] = 145 ± 19 [NO2] = 36 ± 2 [CO] = 57 ± 23 [NO] = 23 ± 8 [NO2] = 33.0 ± 0.6

19. Technical progress Phone software now robust (run-time >8 hours) Visualisation now implemented using Google Earth browser plug-in eScience interface to database (OGSA-DAI) implemented

21. Ongoing work Characterization of data quality & database cleansing Automatic data post-processing Preparation for June 30th event Logistics for large scale Cambridge deployment

22. Map divided into zones

23. Areas covered in Central Valencia 2.28 Km 2.69 Km

24. CO overview, 8 sensors boxes

25. Exhaust Plume: in situ sensor detection of NO, NO 2, CO Wind direction 4 take-offs a.m. and p.m. clearly seen in NO 2 New result: detection of aircraft plume using portable low cost mobile sensors (NO, NO 2, CO) Take-offs: Courtesy of OMEGA: www.omega.mmu.ac.uk

26. Summary and future directions Achievements Low cost mobile sensor unit for real time NO, NO 2 and CO, including GPS, GPRS Multiple sensor network (currently 20 units) Data capture Future (within MESSAGE) Extend to > 60 units Extend to CO 2, VOCs, SO 2 Future (beyond MESSAGE) Additional species, aerosols NERC/LHR?

27. Robin’s last slide?