Update on TROPOMI instrument and status

Pepijn Veefkind, Diego Loyola, Andreas Richter, Ilse Aben, Michel van Roozendael, Isabelle De Smedt, Richard Siddans,

Thomas Wagner and Herbert Nett

Long Term Monitoring

GOME-2C

2015-20222015-2022daily global daily global coveragecoverage

2019 - ~20302019 - ~2030hourly over hourly over

EuropeEurope

gems | tempo2017 - ...2017 - ...

hourly over SE hourly over SE - ASIA- ASIA

2017 - ...2017 - ...hourly over N-hourly over N-

AmericaAmericaKARI | NASA

• 6x higher spatial resolution7x7 km2 vs. 13x24 km2

• 1-5x higher signal-to-noise• Variable binning scheme• better cloud informationfrom the oxygen A+B bands• CO and CH4 observationsfrom the SWIR band

• Data rate ~20x OMI

From OMI to TROPOMI

Gloudemans et al., SCIAMACHY CO over land and oceans: 2003–2007 interannual variability, ACP, 2009

OMI Zoom~13x12 km2 Sampling

12 September 2006OMI special zoom mode 13 x 13 km²

TROPOMI Data ProductsProduct Accuracy ::

PrecisionOzonetotal columnprofile (incl. troposphere)trop. column

3% :: 1%10% :: 5%25% :: 10%

NO2total columntrop. column

1·1015 mol/cm2

10% :: 1·1015 mol/cm2

COtotal column 15% :: 10%

CH4total column 2% :: 1%

SO2volcanic plumetop. column

2 DU :: 1 DU1 DU :: 0.5 DU

AerosolAAIaerosol layer height*aerosol optical thicknesssingle scattering albedo

n/a :: 0.251 km :: 0.5 km

0.1 (20%) :: 0.05 (10%)0.05 :: 0.01

Cloudradiance fractionpressuremaskRegridded NPP- VIIRS

0.05 :: 0.0250 hPa :: 20 hPa

Product Accuracy :: Precision

CH2Ototal column TBD

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/F

MI

GOME-SCIAMACHY-OMIGOME-SCIAMACHY-OMI

PROT

OTYP

EPR

OTOT

YPE

TROPOMITROPOMIL2 PRODUCTSL2 PRODUCTS

OPER

ATIO

NAL

SWOP

ERAT

IONA

L SW

VERI

FICA

TION

VERI

FICA

TION

L2 Working GroupL2 Working Group

KNMI | DLR | IUP-Bremen | BIRA | SRON | MPIC | RAL

Performance Overview

SNR - CDR Status

TROPOMI Status

• Modules are being assembled• Start of calibration: Summer 2014• Instrument delivery: Fall 2014• Planned launch date: September 2015• ESA AO for validation will be opened

early 2014

SWIR-OBM

UVN-OBM

Sun Baffle

Diffusermechanism

Folding Mirrormechanism

Telescope Support Structure

ConnectorBracket

UVIS

UV

Telescope

Nadir Baffle

• Mass ~200 kg

• Average power ~150W

• Level 1B size is approx. 20 GByte /orbit:25x data volume of OMI