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KNMI Ozone Satellite Observations Pepijn Veefkind Piet Stammes Olaf Tuinder Ronald van der A Mark Kroon Peter van Velthoven Pieternel Levelt.

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Presentation on theme: "KNMI Ozone Satellite Observations Pepijn Veefkind Piet Stammes Olaf Tuinder Ronald van der A Mark Kroon Peter van Velthoven Pieternel Levelt."— Presentation transcript:

1 KNMI Ozone Satellite Observations Pepijn Veefkind Piet Stammes Olaf Tuinder Ronald van der A Mark Kroon Peter van Velthoven Pieternel Levelt

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

3 3 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011 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 Radiometrically the instrument is extremely stable. UV degradation ~1%. OMI data of recent years have reduced coverage. 3

4 4 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011 Ozone Monitoring Instrument on EOS-Aura 4 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 Earlier years have daily global coverage.

5 5 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011 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 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 dataset. 5

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

7 7 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011 OMI OMO3PR Ozone Profile Product - Validation 7 Validation paper using MLS, sonde, SAGE and GOMOS data in review. 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.

8 8 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011 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 and Ozone profiles from two GOME-2s after Metop-B launch in April Example of GOME-2 ozone profile information during the 2011 NH low ozone event.

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

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

11 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. sentinel-5 precursor GMES ATMOSPHERE MISSION IN POLAR ORBIT UV-VIS-NIR-SWIR nadir view grating spectrometer. UV-VIS-NIR-SWIR nadir view grating spectrometer. Spectral range: , , nm Spectral range: , , nm Spectral Resolution: nm Spectral Resolution: nm Spatial Resolution: 7x7km 2 Spatial Resolution: 7x7km 2 Global daily coverage at 13:30 local solar time. Global daily coverage at 13:30 local solar time. TROPOMI TROPOMI Total column O 3, NO 2, CO, SO 2,CH 4, CH 2 O,H 2 O,BrO Total column O 3, NO 2, CO, SO 2,CH 4, CH 2 O,H 2 O,BrO Tropospheric column O 3, NO 2 Tropospheric column O 3, NO 2 O 3 profile O 3 profile Aerosol absorbing index, type, optical depth Aerosol absorbing index, type, optical depth CONTRIBUTION TO GMES CONTRIBUTION TO GMES

12 12 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011 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 resolution 7x7 km 2 vs. 13x24 km 2 1-5x higher signal to noise better cloud information oxygen A band ( nm) added CO and CH 4 observations SWIR band ( nm) added 12 TROPOMI optical design. Figure: Dutch Space

13 13 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011 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 13 Van der A, R. J., Allaart, M. A. F., and Eskes, H. J.: Multi sensor reanalysis of total ozone, Atmos. Chem. Phys., 10, , doi: /acp , 2010.

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

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

16 16 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011 Data Dissemination and More Information 16 holdings/OMI/index.shtml

17 17 WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011 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

18 NH Low Ozone: Febr.-March


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