1. The 7th Meeting of the Ozone Research Managers, Geneva, Switzerland 19-21 May, 2008 Satellite Ozone Monitoring and Application Research in China Huang Fuxiang, Lu Naimeng, Zhang Peng hfx@nsmc.cma.gov.cn National Satellite Meteorological Center NSMC, CMA, Beijing, 100081

2. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 Content 1: Development of Satellite Ozone monitoring capacity in China. Content 2:Application research of ozone data from satellite in China. Content 3: Recommendations Content 4: Summary Outline

3. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 Ozone instruments on FY-3 satellite Lab calibration and field observation test Future Plan for calibration and validation Content 1: Development of ozone monitoring capacity

4. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 FY-3 satellite, which is scheduled to launch in late of May 2008, is Chinas 2nd generation of polar orbit satellite. Ozone Instruments on FY-3 satellite: TOU----- Total Ozone Unit SBUS----Solar Backscatter Ultraviolet Sounder Ozone instruments on FY-3 satellite

5. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 TOU/SBUS are the first ozone instruments that China make and They are also the first ones that are carried on Chinese satellite. The SBUS is similar with SBUV/2 and TOU similar with TOMS in design and wavelengths. Thanks to Dr.Lawrence E.Flynn from NOAA/ NESDIS for his help in developing algorithms of FY-3 Sat under the China-U.S cooperaiton project in the field of atmospheric science and Technology. Ozone instruments on FY-3 Sat(2)

6. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 Lab calibration and field observing test (1)SBUS in laboratory calibration

7. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 Lab calibration and field observing test (2)TOU in laboratory calibration

8. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 Lab calibration and field observing test (3)TOU/SBUS in field observing test

9. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 Inter-comparison of ozone products from FY- 3 with data from other projects such as GCOS, GAW and so on. Inter-calibration and validation between TOU/SBUS and instruments of American and European satellites. Validation with surface-based measurements at same passing time in China. Future plans for calibration and validation

10. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 Ozone variations in the Tibetan Plateau. Comparison of satellite ozone products with surface observation. Variations of ozone in the troposphere over China and the reasons. Content 2: Application research in China

11. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 Who? In China, satellite ozone data users come from Universities, Institutes and Space agencies. What? Ozone variations, products validation… Why? Change of Ozone and influence on climate change, developing satellite ozone monitoring… Users and research Goal

12. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 The Tibetan Plateau is located in south-west of China. It is the highest Plateau in the world, with average height about 4,000 to 5,000meters above the sea level. It is called the roof of the world or the third pole of the earth. The relatively strong radiation and the nature of the ground surface make the Plateau a strong heating source to the atmosphere. The Tibetan Plateau

13. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 1.To understand the effects of large scale of topography on the ozone distribution. 2.To determine if the ozone change can modify the surface- atmosphere system in the Tibet region, and possibly influence the climate system on the global scale. 3. To understand how the ozone reduction may affect the biosphere in that region. The aims of these research in TP

14. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 Ozone variations in the TP (From: Zou et al., 1996, GRL )

15. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 The ozone trend over the Tibetan Plateau, deduced from TOMS 1978-1991 year- round data is -0.79±0.82 DU/year, with the monthly trends ranging from -0.17DU/year to -1.79DU/year. Main results:

16. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 Low ozone over the TP (From: Bian, et al., 2006 Chinese Science Bulletin)

17. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 By analyzing the total ozone data from TOMS and ground-based observations, the author found that a large area with extremely low ozone occurred over the Tibetan Plateau during December 14-17, 2003. The area with total ozone 220DU is over 2.5 Million km 2. Main results:

18. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 Comparison of sat ozone products (From:Bian et al., 2005, Chinese Science Bulletin) low data from TOMS were found during 2002-03

19. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 Comparison of TOMS and GB(2)

20. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 By comparing the total ozone data from TOMS (SAT) and ground-based (GB) observations, the authors found significant higher annual mean values of GB-SAT in 2003, and very large jumps of monthly mean were shown in September 2002. Main results:

21. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 Comparison of sat ozone profiles (From: Bian, et al., 2006 JGR)

22. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008

23. The Figures show AIRS-GPS03 comparison in Spring(MAM), Summer/Fall(JJASO) and Winter(NDJF). The comparison show that there exist difference of ozone profiles from AIRS with ozone sonde to some extent. The scale of the difference vary in different height. Main results:

24. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 Tropospheric ozone variations in China

25. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 Residual of TOR-influencing model

26. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 The tropospheric ozone is often recognized to be connected with human activities. By considering the influence of surface height and population density, the authors use the residual to show the possible influence of large scale of topography on dynamical processes and consequence on the distribution of tropospheric ozone over China. Main results:

27. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 Share the experience in developing new ozone instruments and retrieval algorithms. Cooperate to make consistent long-term dataset from different countrys satellites. Pay more attention to the application research using data from satellites. Content 3 Recommendations

28. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 China has come to realize the importance of ozone monitoring from satellite, and are making a great effort in developing the capacity. FY-3 is the start that Chinese satellite carrying ozone instruments, and we will develope new instruments on following satellites. FY-3, the Chinas 2nd generation polar orbit satellite, will be launch in late May 2008. We hope it will be helpful for detecting the global ozone change trends. Content 4 Summary

29. The 7th Meeting of the Ozone Research Managers, Geneva,Switzerland, 19-21 May, 2008 Ozone products from FY-3 satellite will be available to users of the whole world. Chinese scientists have paid extensive attention to the application research according different aims in the past. More and better research projects will be carried out in the future. Summary(2)

30. The 7th Meeting of the Ozone Research Managers, Geneva, Switzerland 19-21 May, 2008 Thank you!