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C. S. Boxe, G. Osterman, J. Worden, A. Eldering

Validation of Tropospheric Emission Spectrometer (TES) nadir stare ozone profiles using ozonesonde measurements during Arctic Research on the Composition of the Troposphere from Aircraft and Satellites (ARCTAS). C. S. Boxe, G. Osterman, J. Worden, A. Eldering. Acknowledgements. NASA-JPL

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C. S. Boxe, G. Osterman, J. Worden, A. Eldering

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  1. Validation of Tropospheric Emission Spectrometer (TES) nadir stare ozone profiles using ozonesonde measurements during Arctic Research on the Composition of the Troposphere from Aircraft and Satellites (ARCTAS) C. S. Boxe, G. Osterman, J. Worden, A. Eldering

  2. Acknowledgements • NASA-JPL • TES Team • ARC-IONS Network

  3. Outline • Background and motivation for retrieving ozone (O3) profiles via TES. • TES version 3 (V003) nadir stare ozone profiles comparison to ARC-IONS ozonesondes during ARCTAS – stare observation mode – TES (TES averaging kernal and a priori constraint) operator applied to TES-sonde measurment pairs – error analysis – Bratt’s Lake (April 18th, 2008) and Egbert (July 5th, 2008)

  4. Outline • Background and motivation for retrieving ozone (O3) profiles via TES. • TES version 3 (V003) nadir stare ozone profiles comparison to ARC-IONS ozonesondes during ARCTAS – stare observation mode – TES (TES averaging kernal and a priori constraint) operator applied to TES-sonde measurment pairs – error analysis – Bratt’s Lake (April 18th, 2008) and Egbert (July 5th, 2008)

  5. Background and Motivation

  6. Outline • Background and motivation for retrieving ozone (O3) profiles via TES. • TES version 3 (V003) nadir stare ozone profiles comparison to ARC-IONS ozonesondes during ARCTAS – stare observation mode – TES (TES averaging kernal and a priori constraint) operator applied to TES-sonde measurment pairs – error analysis – Bratt’s Lake (April 18th, 2008) and Egbert (July 5th, 2008)

  7. TES Stare Mode • Stare: In nadir mode, point at specific locations over sites for validation and other scientific interest for up to about 4 minutes. Such observations are made for as long as the target is in within ±45° of the nadir direction (up to 210 seconds).

  8. TES Stare Mode – Bratt’s Lake, April 18th, 2008

  9. Outline • Background and motivation for retrieving ozone (O3) profiles via TES. • TES version 3 (V003) nadir stare ozone profiles comparison to ARC-IONS ozonesondes during ARCTAS – stare observation mode – TES (TES averaging kernal and a priori constraint) operator applied to TES-sonde measurment pairs – error analysis –Bratt’s Lake (April 18th, 2008) and Egbert (July 5th, 2008)

  10. TES operator applied to sonde data a priori constraint vector TES averaging kernel Sonde Data accounts for TES sensitivity and vertical resolution

  11. Outline • Background and motivation for retrieving ozone (O3) profiles via TES. • TES version 3 (V003) nadir stare ozone profiles comparison to ARC-IONS ozonesondes during ARCTAS – stare observation mode –TES (TES averaging kernal and a priori constraint) operator applied to TES-sonde measurment pairs – error analysis – Bratt’s Lake (April 18th, 2008) and Egbert (July 5th, 2008)

  12. Error Analysis random instrument spectral errors  f.s vector errors forward model errors  f.s vector errors uncertainty due to unresolved fine structure

  13. Outline • Background and motivation for retrieving ozone (O3) profiles via TES. • TES version 3 (V003) nadir stare ozone profiles comparison to ARC-IONS ozonesondes during ARCTAS – stare observation mode –TES (TES averaging kernal and a priori constraint) operator applied to TES-sonde measurment pairs – error analysis – Bratt’s Lake (April 18th, 2008) and Egbert (July 5th, 2008)

  14. Spring and Summer TES ozone and ozonesonde comparisons • Bratt’s Lake (April 2nd, 2008), 50o N, 105o W • Barrow (April 10th, 2008), 71o N, 157o W • Barrow (April 12th, 2008), 71o N, 157o W • Barrow (April 14th, 2008), 71o N, 157o W • Bratt’s Lake (April 18th, 2008), 50o N, 105o W • Egbert (July 5th, 2008), 44o N, 80o W • Yellowknife (July 5th,2008), 62o N, 114o W • Egbert (July 7th, 2008), 44o N, 80o W • Yellowknife (July 7th,2008), 62o N, 114o W

  15. Select Spring and Summer TES ozone and ozonesonde comparisonsApril 18th, 2008, Bratt’s Lake

  16. Select Spring and Summer TES ozone and ozonesonde comparisonsApril 18th, 2008, Bratt’s Lake

  17. Select Spring and Summer TES ozone and ozonesonde comparisonsApril 18th, 2008, Bratt’s Lake

  18. Select Spring and Summer TES ozone and ozonesonde comparisonsApril 18th, 2008, Bratt’s Lake

  19. Select Spring and Summer TES ozone and ozonesonde comparisonsApril 18th, 2008, Bratt’s Lake

  20. Select Spring and Summer TES ozone and ozonesonde comparisonsJuly 5th, 2008, Egbert

  21. Select Spring and Summer TES ozone and ozonesonde comparisonsJuly 5th, 2008, Egbert

  22. Select Spring and Summer TES ozone and ozonesonde comparisonsJuly 5th, 2008, Egbert

  23. Select Spring and Summer TES ozone and ozonesonde comparisonsJuly 5th, 2008, Egbert

  24. Select Spring and Summer TES ozone and ozonesonde comparisonsJuly 5th, 2008, Egbert

  25. Conclusions • Actual random (noise + temperature and interfering species) error consistent with actual errors. • Bias is consistent with prior sonde comparisons (H. Worden et al. 2007, 2006, 2004, and Nassar et al. 2008). • At high latitudes TES data primarily sensitive to ozone in the middle and upper troposphere. Sensitivity to lower troposphere depends on thermal contrast.

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