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

KNMI Ozone Satellite Observations

Pepijn Veefkind (veefkind@knmi)

Piet StammesOlaf TuinderRonald van der AMark KroonPeter van VelthovenPieternel Levelt

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

ContentsOMI on EOS-Aura

GOME-2 Ozone Profile product

TROPOMI status and plans

Multi-Sensor Reanalysis

Data Dissemination

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3WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011

Ozone Monitoring Instrument on EOS-AuraOMI 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.

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

Ozone Monitoring Instrument on EOS-Aura

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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.

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OMI DOAS Total Ozone ProductTotal 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.

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6WMO UNEP Ozone Research Managers Meeting, 2-4 May 2011

OMI OMO3PR Ozone Profile ProductBased 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.

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OMO3PR data for one orbit of data.This product contains 3D ozone profile information, as well as the total column ozone.

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OMI OMO3PR Ozone Profile Product - Validation

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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.

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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

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Example of GOME-2 ozone profile information during the 2011 NH low ozone event.

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GOME-2 Ozone Profile Product - Validation

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Comparison of GOME-2 midlatitude profiles with in-situ sonde and ground based microwave observations.

Credits: Delcloo (KMI) and Lins (DWD)

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Height-resolved Antarctic ozone hole structure in 2008

Van Peet et al., GRL, 2009

• 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 precursorGMES ATMOSPHERE MISSION IN POLAR ORBIT

‣UV-VIS-NIR-SWIR nadir view UV-VIS-NIR-SWIR nadir view grating spectrometer.grating spectrometer.

‣Spectral range: 270-500, Spectral range: 270-500, 675-775, 2305-2385 nm675-775, 2305-2385 nm

‣Spectral Resolution: 0.25-Spectral Resolution: 0.25-1.1 nm1.1 nm

‣Spatial Resolution: 7x7kmSpatial Resolution: 7x7km22

‣Global daily coverage at Global daily coverage at 13:30 local solar time.13:30 local solar time.

TROPOMITROPOMI

‣Total columnTotal columnOO33, NO, NO22, CO, SO, CO, SO22,CH,CH44, , CHCH22O,HO,H22O,BrOO,BrO

‣Tropospheric columnTropospheric columnOO33, NO, NO22

‣OO33 profile profile

‣Aerosol absorbing index, Aerosol absorbing index, type, optical depthtype, optical depth

CONTRIBUTION TO GMESCONTRIBUTION TO GMES

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TROPOspheric Monitoring InstrumentTROPOMI 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

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TROPOMI optical design.Figure: Dutch Space

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Multi Sensor Reanalysis (MSR) of total ozoneLong 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 .

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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.

Data used for the Multi Sensor Reanalysis (MSR) of ozone

• TOMS Nimbus 7: 1978-1993 TOMS v.8 NASA

• TOMS EarthProbe: 1996-2002 TOMS v.8 NASA

• SBUV 7, 9a, 9d, 11, 16: 1978-2004 SBUV v.8 NOAA

• GOME : 1995-2008 GDP v.4 ESA/DLR

• GOME : 1995-2008 TOGOMI v1.2 KNMI

• SCIAMACHY : 2002-2008 SGP v.3 ESA/DLR

• SCIAMACHY : 2002-2008 TOSOMI v.0.43 KNMI

• OMI : 2004-2008 TOMS v.3 NASA

• OMI : 2004-2008 DOAS v.3 KNMI

• GOME-2 : 2007-2008 GDP v.4.2 EUMETSAT/DLR

• WOUDC: 1978-2008 Brewer(3,4), Dobson, Filter

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

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Data Dissemination and More Information

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http://disc.sci.gsfc.nasa.gov/Aura/data-holdings/OMI/index.shtml

http://www.temis.nl/

http://www.knmi.nl/omi/

http://omivfd.fmi.fi

http://o3msaf.fmi.fi/http://www.tropomi.eu/TROPOMI/Home.html

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SummaryKNMI 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

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2011 NH Low Ozone: Febr.-March