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Outline

Ozone Instruments on FY-3 Satellite and Application in the Monitoring of 2011 spring Arctic Ozone Depletion. Fuxiang, Huang (huangfx@cma.gov.cn) National Satellite Meteorological Center, Beijing, China, 100081. Outline. 1. FY-3 Satellite Overview 2. SBUS and TOU on FY-3 Satellite

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Outline

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  1. Ozone Instruments on FY-3 Satellite and Application in the Monitoring of 2011 spring Arctic Ozone Depletion Fuxiang, Huang (huangfx@cma.gov.cn)National Satellite Meteorological Center, Beijing, China, 100081

  2. Outline • 1. FY-3 Satellite Overview • 2. SBUS and TOU on FY-3 Satellite • 3. Primary validation results for ozone products from FY-3 • 4. Application in the monitoring 2011 spring Arctic ozone depletion • 5. Summary

  3. 1. FY-3 Satellite Overview • FY-3 (FengYun-3) is a series of the second generation polar-orbiting meteorological satellites of China which provide global, 3-dimensional, quantitative and multi-spectral remote sensing data. • FY-3A and B, the first two satellites of the series, were successfully launched in May 2008 and Nov 2010, respectively. In the future, FY-3 satellite will be launched in every two years.

  4. There are 11 payloads on the FY-3 satellite, including two ozone detecting instruments SBUS and TOU. • The SBUS (Solar Backscatter Ultraviolet Sounder) and TOU (Total Ozone Unit) on FY-3 satellite, are the first Chinese ozone-monitoring instruments on a Chinese meteorological satellite.

  5. FY-3A/B Products

  6. Remote sensing Products from FY-3

  7. FY-3 Operational Products(AtmosphericandCloud)

  8. FY-3 Operational Products(Atmospheric and Cloud)

  9. FY-3 Operational Products(Land and Sea Surface)

  10. FY-3 Operational Products(Space Weather)

  11. 2. SBUS and TOU On FY-3 • The SBUS is designed to detect ozone vertical profiles. The FY-3 SBUS operates on similar channels and wavelengths as the SBUV/2s on NOAA series. • The TOU (Total Ozone Unit) is designed to measure global atmospheric total ozone. The FY-3 TOU is similar with American TOMS.

  12. Picture of FY-3 SBUS Characteristics of FY-3 SBUS

  13. Characteristics of FY-3 TOU Picture of FY-3 TOU

  14. 3. Primary validation results • 3.1 Validation of Ozone vertical profiles • 3.2 Validation of total ozone

  15. 3.1 Validation of ozone vertical profiles • Comparison and Validation of ozone products from FY-3 SBUS and TOU were carried out 1 month later after the FY-3 satellite was launched. • Ozone sonde data and SBUV/2 products were used to validate ozone vertical profiles from FY-3 SBUS.. • Ozone sonde were carried out in Beijing and Shanghai.

  16. To compare ozone vertical profiles from FY-3 with NOAA SBUV/2s data, matching pixels data were chosen. The matching conditions include: same date, differences on latitude and longitude are less than 0.5 degree. • Ozone sonde were carried out in Beijing and Shanghai. 20 profiles of ozone sonde were used in the validation.

  17. Profiles comparison between data of FY-3 SBUS and NOAA SBUV/2

  18. Relative bias of FY-3B SBUS data from NOAA SBUV/2 Comparisons were carried out from Dec 2010 to March 2011. More than 1000Profiles

  19. Comparisons of total ozone of FY-3B SBUS with FY-3B TOU Comparisons were carried out in Feb 2011.

  20. Comparison results of ozone profiles from FY-3B SBUS with ozone sonde data Comparisons were carried out from Dec 2010 to Mar 2011. Ozone sonde in Beijing.

  21. 3.2 Validation of total ozone Ground-based stations used for FY-3/TOU validation, data available from Jul. 2008~Aug. 2009. Instruments: Brewer, Dobson

  22. Error Analysis

  23. 4. Application in monitoring 2011 spring Arctic ozone depletion • Data from FY-3B SBUS and NOAA SBUV/2 were used to monitor ozone levels in the Arctic region. Severe ozone depletion was monitored to last more than 1 month, from March 1 to April 5, 2011. • Results revealed a significant ozone depletion in the area, with total ozone levels between 200–250DU. The ozone levels recorded were 100–200DU below normal, and in some parts the levels were as low as 200DU, indicating a mini ozone-hole.

  24. During the sampling period, the ozone depletion area underwent identifiable expansion and detraction, a rotation around the North Pole from the west to the east, and a longitudinal movement from the Pole, spreading to the mid latitudes. • In the end of March, the low ozone area extended to densely populated areas between Europe and the middle of Russia. This occurrence has significant global implications.

  25. Total ozone projection map over the Arctic region on March 14, 2011(DU) Data from FY-3B SBUS and NOAA SBUV/2s (a) and from FY-3A TOU (b).

  26. Total ozone distribution map (DU) (Data from WOUDC surface observation on Mar.14, 2011 ) From http: www.theozonehole.com/arctic2011loss.htm To allow the comparison, we have revolved the original map to correspond with the longitudinal position in Figure 1.

  27. Comparisons of ozone monitoring with surface observation • Comparisons show a clear consistency among the data from the satellite SBUS and SBUV/2s and TOU, and from surface observation. • The similarities between these two sets of figures provides evidence of severe ozone depletion in Arctic region. • The comparison also shows the advantages of ozone remote sensing from satellite in global ozone monitoring.

  28. A comparison of ozone profiles for the same point at 3 dates These Profiles are located at 71.11N,77.09 E and nearby area.

  29. The low ozone area extended during 28-31 March 2011 and the size is at its peak.

  30. Ozone depletion extended to mid-high latitude area at the end of Mar. • During the period of March 28-31, the area of ozone depletion extended from the pole to mid-high latitude, covering western Europe and central Russia. • Total ozone levels for the area were between 230-250DU, with the sections falling below 220DU reaching the level of a mini-ozone hole. • The extension of ozone depletion from the pole to mid latitude area, posed a threat to not only the health and safety of the people in this region, but also to the environment. This should attract significant attention from the global community.

  31. 5. Summary • SBUS and TOU on the FY-3 satellite are the first Chinese ozone remote sensing instruments on a satellite. Validations of the ozone products show the consistency with these from American sensors. • The application of monitoring the 2011 spring Arctic ozone depletion show the consistency of satellite data with WOUDC surface observation and the advantage of satellite observations in global ozone monitoring.

  32. As for the validation of ozone products from FY-3, we have made adequate comparisons for TOU. We have enough reliable total ozone measurements from WOUDC. However, in validation of SBUS product, we met great difficulties in finding comparison profiles. • My question is how about the progress in ozone profile measuring from the surface? We welcome more reliable ozone profiles measurements from the surface to compare with products from FY-3 SBUS.

  33. Thank you for your attention！

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