status s5p tropomi pepijn veefkind. sentinel 5 precursor copernicus atmosphere mission in polar...
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StatusS5p TROPOMI
Pepijn Veefkind
Sentinel 5 precursorCOPERNICUS 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 2016 with a 7 year design lifetime.
‣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.
TROPOMI
‣Total columnO3, NO2, CO, SO2,CH4, CH2O,H2O,BrO
‣Tropospheric columnO3, NO2
‣O3 profile
‣Aerosol absorbing index & layer height
Contribution to Copernicus
TROPOMI in the CEOS AQ Constellation• Covering the spatial regions that are not covered by
the GEO’s• Add products, e.g. CO, CH4, Aerosol layer height,
aerosol profile.• Act as a “travelling standard” between the GEOs• S5P – SNPP constellation
• Project Organization• Instrument• Level 0-1B• Level 1-2• On-ground Calibration• Validation
Instrumentprime Airbus DS NL
CalibrationKNMI / SRON
Airbus DS NL / TNO
Level 0-1BKNMI
Level 1-2KNMI, SRON, DLR, IUP-Bremen
BIRA-IASB, MPI Mainz, RAL
OperationsKNMI, ESOC
Ground SegmentDLR, KNMI
ValidationESA, KNMI, SRON, ...
Prin
cipa
l Inv
esti
gato
rKN
MI (
PI),
SRO
N (c
o-PI
)
Project Man.JPT (ESA-NSO)
SWIR module
UVN module
CAL unit
Telescope
UVN DEMs
SWIR DEM
Performance Overview
UV UVIS NIR
Level 0-1B Processor• Multi-threading• Multi-pass• Algorithms are pluggable at run-time• Full error propagation (noise + systematic errors)• L1B product ~25 Gbyte / 100 min• S/W design can be re-used
GOME-SCIAMACHY-OMI
PR
OTO
TYPE
TROPOMIL2 PRODUCTS
OPER
ATIO
NA
L SW
VER
IFIC
ATIO
N
L2 Working Group
KNMI | DLR | IUP-Bremen | BIRA | SRON | MPIC | RAL
TROPOMI Data ProductsProduct Accuracy :: Precision
Ozonetotal columnprofile (incl. troposphere)trop. column
3.5-5% :: 1.6-2.5%10-30% :: 10%TBD :: TBD
NO2
total columntrop. column
10-25% :: 1·1015 mol/cm2
25-50% :: 7·1014 mol/cm2
COtotal column 15% :: 10%
CH4
total column 1.5% :: 1%
SO2
volcanic plumetop. column
TBC :: 1-3 DU30-50% :: 1-3 DU
AerosolAAIaerosol layer height*aerosol optical thicknesssingle scattering albedo
<1 AAI :: 0.1 AAI1 km :: 0.5 km0.1 (20%) :: 0.05 (10%)0.05 :: 0.01
CloudfractionpressurealbedoRegridded NPP- VIIRS
20% :: 0.0520% :: 30 hPa20% :: 0.05
Product Accuracy :: Precision
CH2Ototal column 40-80% :: 1.2·1016 mol/cm2
CHO-CHOtotal column TBD
BrOtotal column TBD
HDOtotal column TBD
H2Ototal column 20% :: 10%
OClOtotal column TBD
UVsurface flux 10% :: 5%
Surface Reflectancemonthly climatology 3% :: 1%
The operational data products will be developed by a collaboration of European
institutes.KNMI/DLR-IMF/IUP/BIRA-IASB/SRON/MPIC/RAL/FMI
On-ground Calibration• All measurements done in vacuum.• Automated processing system for quick-look and key
data analysis, using L0-1B processor.• Calibration period of 125 days of continuous
measurements.• Strong involvement of KNMI/SRON:– On-site science support team– Data analysis team
Optical Stimulus Calibration Key Data E / S
Star stimulus Geolocation ELasers (UVN/SWIR) ISRF, Stray light E + S
Echelle grating stimulus UVN ISRF E + S
Spectral filters Stray light E
Spectral Line Lamps Spectral calibration E + S
FEL lamp + diffuser Absolute radiometric calibration E + S
Black bodies Absolute radiometric calibration E + S
Integrating Sphere Relative radiometry, BSDF E + S
Sun simulator Relative radiometry, BSDF E + S
Internal LEDs Detector parameters n/a
Internal WLS Relative radiometry n/a
Internal laser diodes ISRF n/a
Geophysical Validation
• 2014: ESA AO• 2015: ESA Validation Workshop
• 2014: AROMAT campaign, Romania• 2015: AROMAT-II campaign, Romania• 2016: Max-DOAS comparison
campaign, NL• 2017: ESA Campaign• 2018: Cabauw Cloud campaign, NL
Summary & Outlook
• TROPOMI will be a major step forward for atmospheric composition observations due to improved spatial resolution & sensitivity.
• TROPOMI will address important societal challenges: air quality, climate change, ozone layer.
• The on-ground calibration has been finalized, analysis ongoing.
• We are counting down for a launch in 2016!
www.tropomi.nl
www.tropomi.eu
sentinel.esa.int/s5p