1. A&WMA International Specialty Conference, May 10-14, 2010, Xi’an, Shaanxi Province, China Leapfrogging Opportunities for Air Quality Improvement Air Pollution Pattern and Trends Over China: An exploration of the Satellite and Surface Observations R. B. Husar, L. Du and E.M. Robinson Washington University, St. Louis, MO, USA

2. Satellites show the synoptic aerosol pattern and provide rich spatial context … e.g. pollution in valleys. Jan 10, 2003, SeaWiFSDec 19, 2007, MODIS

3. The Perfect Dust Storm… Apr. 7, 2001 SaeWiFS

4. Population density Emissions - NO x

5. Satellite Column Concentration: NO2, 2005 OMI Spectrometer Sensor

6. Satellite Column Concentration: NO2, 2009 OMI Spectrometer Sensor

7. OMI NO2 – Seasonal NO2 Dec, Jan, Feb Jun, Jul, Aug Mar, Apr, May Sep, Oct, Nov

8. OMI NO 2 Day of Week: Thursday

9. OMI NO 2 Day of Week: Sunday

10. Emissions – SO 2 OMI SO 2: Dec, Jan, Feb OMI SO 2: Jun, Jul, Aug

11. OMI SO 2 : Thursday

12. OMI SO 2 : Sunday

13. Aerosol AOT – MODIS JanuaryApril OctoberJuly

14. MODIS4 AOT: Thursday

15. MODIS4 AOT: Sunday

16. MODIS4 AOT: Thursday

17. MODIS4 AOT: Sunday

18. MODIS Fire Pixels

19. OMI Absorbing Aerosol Index JanuaryApril OctoberJuly

20. OMI CHCO Formaldehyde JanuaryApril OctoberJuly

21. Visibility is recorded at 7000+ stations hourly

22. Surface Extionction Coefficient January October July

23. Shanghai

24. Sichuan Basin Chengdu Jun, Jul, AugChongqing Dec, Jan, Feb

25. Binhai, Tanjin Binhai Jun, Jul, AugTianjin Dec, Jan, Feb

26. Xi’an Jun, Jul, AugTianjin Dec, Jan, Feb

27. New International Program (China is key formal participant): Global Observing System of Systems (GEOSS) Pooling of observations Building New Things