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KNMI Ozone Satellite Observations

KNMI Ozone Satellite Observations. Pepijn Veefkind (veefkind@knmi) Piet Stammes Olaf Tuinder Ronald van der A Mark Kroon Peter van Velthoven Pieternel Levelt. Contents. OMI on EOS-Aura GOME-2 Ozone Profile product TROPOMI status and plans Multi-Sensor Reanalysis Data Dissemination.

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KNMI Ozone Satellite Observations

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  1. KNMI Ozone Satellite Observations • Pepijn Veefkind (veefkind@knmi) • Piet Stammes • Olaf Tuinder • Ronald van der A • Mark Kroon • Peter van Velthoven • Pieternel Levelt

  2. Contents • OMI on EOS-Aura • GOME-2 Ozone Profile product • TROPOMI status and plans • Multi-Sensor Reanalysis • Data Dissemination 2 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011

  3. Ozone Monitoring Instrument on EOS-Aura • OMI is the Dutch-Finnish contribution to NASA EOS-Aura • KNMI is the PI institute for OMI. • OMI was launched in July 2004, more than 6 years data already! • Mission extended to at least 2013. • Radiometrically the instrument is extremely stable. UV degradation ~1%. • OMI data of recent years have reduced coverage. 3 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011

  4. Ozone Monitoring Instrument on EOS-Aura Plot showing the radiometric degradation of OMI. After 6 years in orbit the UV-2 degradation is ~1%. Figure: G. Jaross, SSAI OMI daily coverage for the data after January 2009. Earlier years have daily global coverage. 4 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011

  5. OMI DOAS Total Ozone Product • Total ozone retrieval using the DOAS method. • Produced as offline, near-real-time and very-fast delivery product (Europe only, co-operation with FMI) • Current algorithm version 1.1.1. • In 2011 a reprocessing of OMDOAO3 is planned that includes the following improvements: • Switch from Bass-Paur to Brion-Daumont-Malicet ozone cross sections. • Spectral calibration on every ground pixel. • Improved treatment of sea-ice pixels. • Consistent retrieval for the whole 2004-2011 dataset. 5 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011

  6. OMI OMO3PR Ozone Profile Product • Based on optimal estimation algorithm. • High horizontal resolution of ~60x50 km2. Vertical resolution 6-7 km. • Dataset Oct. 2004 - present. • Extensive validation using MLS on the same platform as OMI. OMO3PR data for one orbit of data. This product contains 3D ozone profile information, as well as the total column ozone. 6 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011

  7. OMI OMO3PR Ozone Profile Product - Validation Average (left plot) and difference (right plot) of a week of OMI and MLS ozone profiles collocated over Antarctica [90S-75S]. The legend reports the numbers characterizing the time frame and statistics of this collocation. Validation paper using MLS, sonde, SAGE and GOMOS data in review. 7 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011

  8. GOME-2 Ozone Profile Product • Derived from GOME-2 on Metop-A • Data produced in NRT (<3 h) within the EUMETSAT O3MSAF project • Data record 2007-present • For data access, see http://o3msaf.fmi.fi and http://www.temis.nl • Ozone profiles from two GOME-2’s after Metop-B launch in April 2012 Example of GOME-2 ozone profile information during the 2011 NH low ozone event. 8 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011

  9. GOME-2 Ozone Profile Product - Validation Comparison of GOME-2 midlatitude profiles with in-situ sonde and ground based microwave observations. Credits: Delcloo (KMI) and Lins (DWD) 9 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011

  10. Height-resolved Antarctic ozone hole structure in 2008 Van Peet et al., GRL, 2009 10 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011

  11. CONTRIBUTION TO GMES TROPOMI • UV-VIS-NIR-SWIR nadir view grating spectrometer. • Spectral range: 270-500, 675-775, 2305-2385 nm • Spectral Resolution: 0.25-1.1 nm • Spatial Resolution: 7x7km2 • Global daily coverage at 13:30 local solar time. • Total columnO3, NO2, CO, SO2,CH4, CH2O,H2O,BrO • Tropospheric columnO3, NO2 • O3 profile • Aerosol absorbing index, type, optical depth sentinel-5 precursor GMES ATMOSPHERE MISSION IN POLAR ORBIT • The ESA Sentinel-5 Precursor (S-5P) is a pre-operational mission focussing on global observations of the atmospheric composition for air quality and climate. • The TROPOspheric Monitoring Instrument (TROPOMI) is the payload of the S-5P mission and is jointly developed by The Netherlands and ESA. • The planned launch date for S-5P is 2014 with a 7 year design lifetime.

  12. TROPOspheric Monitoring Instrument • TROPOMI is developed by The Netherlands in co-operation with ESA. • KNMI is the PI institute • Compared to OMI: • 6x higher spatial resolution7x7 km2 vs. 13x24 km2 • 1-5x higher signal to noise • better cloud informationoxygen A band (675-775 nm) added • CO and CH4 observationsSWIR band (2305-2385 nm) added TROPOMI optical design. Figure: Dutch Space 12 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011

  13. Multi Sensor Reanalysis (MSR) of total ozone • Long term data record based on a large number of satellite sensors and ground based Brewer-Dobson stations. • Data assimilation is applied to provide a global consistent dataset. • MSR dataset is available at http://www.temis.nl/macc/index.php?link=o3_msr_intro.html . Van der A, R. J., Allaart, M. A. F., and Eskes, H. J.: Multi sensor reanalysis of total ozone, Atmos. Chem. Phys., 10, 11277-11294, doi:10.5194/acp-10-11277-2010, 2010. 13 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011

  14. Data used for the Multi Sensor Reanalysis (MSR) of ozone • TOMS Nimbus 7: 1978-1993TOMS v.8 NASA • TOMS EarthProbe:1996-2002TOMS v.8 NASA • SBUV 7, 9a, 9d, 11, 16:1978-2004SBUV v.8 NOAA • GOME :1995-2008GDP v.4 ESA/DLR • GOME :1995-2008TOGOMI v1.2 KNMI • SCIAMACHY :2002-2008SGP v.3 ESA/DLR • SCIAMACHY :2002-2008TOSOMI v.0.43 KNMI • OMI : 2004-2008TOMS v.3 NASA • OMI : 2004-2008DOAS v.3 KNMI • GOME-2 :2007-2008GDP v.4.2 EUMETSAT/DLR • WOUDC:1978-2008Brewer(3,4), Dobson, Filter

  15. 30 year of assimilated ozone based on bias-corrected satellite data

  16. Data Dissemination and More Information http://omivfd.fmi.fi http://www.temis.nl/ http://disc.sci.gsfc.nasa.gov/Aura/data-holdings/OMI/index.shtml http://o3msaf.fmi.fi/ http://www.knmi.nl/omi/ http://www.tropomi.eu/TROPOMI/Home.html 16 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011

  17. Summary • KNMI instrument involvement as PI institute: • OMI on Aura (2004-present) • TROPOMI on ESA/GMES Sentinel 5 Precursor (planned launch 2014) • KNMI ozone data products: • Total ozone: OMI and SCIAMACHY • Ozone profile: OMI and GOME-2 • Multi-Sensor Reanalysis (MSR) of total ozone • Assimilated ozone profile dataset will be made in the ESA CCI project • Data dissemination through temis.nl, O3MSAF, NASA and EUMETSAT web sites 17 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011

  18. 2011 NH Low Ozone: Febr.-March

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