References

ACP

Atmospheric Chemistry and Physics

ACP

1680-7324

Copernicus GmbH

Göttingen, Germany

10.5194/acp-7-2103-2007

Near-real time retrieval of tropospheric NO2 from OMI

Boersma

K. F.

¹ ³ Eskes

H. J.

¹ Veefkind

J. P.

¹ Brinksma

E. J.

¹ van der A

R. J.

¹ Sneep

¹ van den Oord

G. H. J.

¹ Levelt

P. F.

¹ Stammes

¹ Gleason

J. F.

² Bucsela

E. J.

KNMI, De Bilt, The Netherlands

NASA GSFC, Greenbelt, MD, USA

now at: Harvard University, Cambridge, USA

27 04 2007

7 8 2103 2118

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We present a new algorithm for the near-real time retrieval – within 3 h of the actual satellite measurement – of tropospheric NO2 columns from the Ozone Monitoring Instrument (OMI). The retrieval is based on the combined retrieval-assimilation-modelling approach developed at KNMI for off-line tropospheric NO2 from the GOME and SCIAMACHY satellite instruments. We have adapted the off-line system such that the required a priori information – profile shapes and stratospheric background NO2 – is now immediately available upon arrival (within 80 min of observation) of the OMI NO2 slant columns and cloud data at KNMI. Slant columns for NO2 are retrieved using differential optical absorption spectroscopy (DOAS) in the 405–465 nm range. Cloud fraction and cloud pressure are provided by a new cloud retrieval algorithm that uses the absorption of the O2-O2 collision complex near 477 nm. On-line availability of stratospheric slant columns and NO2 profiles is achieved by running the TM4 chemistry transport model (CTM) forward in time based on forecast ECMWF meteo and assimilated NO2 information from all previously observed orbits. OMI NO2 slant columns, after correction for spurious across-track variability, show a random error for individual pixels of approximately 0.7×1015 molec cm−2. Cloud parameters from OMI's O2-O2 algorithm have similar frequency distributions as retrieved from SCIAMACHY's Fast Retrieval Scheme for Cloud Observables (FRESCO) for August 2006. On average, OMI cloud fractions are higher by 0.011, and OMI cloud pressures exceed FRESCO cloud pressures by 60 hPa. A sequence of OMI observations over Europe in October 2005 shows OMI's capability to track changeable NOx air pollution from day to day in cloud-free situations.

References 1

Acarreta, J. R., De Haan, J. F., and Stammes, P.: Cloud pressure retrieval using the \chemO_2-O_2 absorption band at 477 nm, J. Geophys. Res., 109, D05204, doi:10.1029/2003JD003915, 2004.

Beirle, S., Platt, U., Wenig, M., and Wagner, T.: Weekly cycle of \chemNO_2 by GOME measurements: A signature of anthropogenic sources, Atmos. Chem. Phys., 3, 2225–2232, 2003.

Beirle, S., Platt, U., Wenig, M., and Wagner, T.: NOx production by lightning estimated with GOME, Adv. Space Res., 34, 793–797, 2004.

Beirle, S. N., Spichtinger, A., Stohl, K. L., Cummins, T., Turner, D., Boccippio, O. R., Cooper, M., Wenig, M., Grzegorski, U., Platt, U., and Wagner, T.: Estimating the NOx produced by lightning from GOME and NLDN data: a case study in the Gulf of Mexico, Atmos. Chem. Phys., 6, 1075–1089, 2006.

Bergman, J. W. and Salby, M. L.: Diurnal Variations of Cloud Cover and Their Relationship to Climatological Conditions, J. Climate, 9, 2802–2820, 1996.

Blond, N., Boersma, K. F., Eskes, H. J., van der A, R. J., Van Roozendael, M., De Smedt, I., Bergametti, G., and Vautard, R.: Intercomparison of SCIAMACHY nitrogen dioxide observations, in-situ measurements and air quality modeling results over Western Europe, accepted, J. Geophys. Res., 2007.

Boersma, K. F., Bucsela, E. J., Brinksma, E. J., and Gleason, J. F.: \chemNO_2, in: OMI Algorithm Theoretical Basis Document, vol. 4, OMI Trace Gas Algorithms, ATB-OMI-04, Version 2.0, edited by: K. Chance, 13–36, NASA Distrib. Active Archive Cent., Greenbelt, Md., Aug., 2002.

Boersma, K. F., Eskes, H. J., and Brinksma, E. J.: Error analysis for tropospheric \chemNO_2 retrieval from space, J. Geophys. Res., 109, D04311, doi:10.1029/2003JD003962, 2004.

Boersma, K. F., Eskes, H. J., Meijer, E. W., and Kelder, H. M.: Estimates of lightning NOx production from GOME satellite observations, Atmos. Phys. Chem., 5, 2311–2331, 2005.

Bovensmann, H., Burrows, J. P., Buchwitz, M., Frerick, J., Nöel, S., Rozanov, V. V., Chance, K. V., and Goede, A. P. H.: SCIAMACHY: Mission Objectives and Measurement Modes, J. Atmos. Sci., 56(2), 127–150, 1999.

Bregman, A., Segers, A. J., Krol, M., Meijer, E. W., and Van Velthoven, P. F.: On the use of mass-conserving wind fields in chemistry-transport models, Atmos. Chem. Phys., 2, 447–457, 2003.

Bucsela, E. J., Celarier, E. A., Wenig, M. O., Gleason, J. F., Veefkind, J. P., Boersma, K. F., and Brinksma, E. J.: Algorithm for \chemNO_2 vertical column retrieval from the Ozone Monitoring Instrument, IEEE trans. on Geosci. Rem. Sens., 44(5), doi:10.1109/TGRS.2005.863715, 2006.

Cede, A., Herman, J., Richter, A., Krotkov, N., and Burrows, J.: Measurements of nitrogen dioxide total column amounts using a Brewer double spectrophotometer in direct sun mode, J. Geophys. Res., 111, D05304, doi:10.1029/2005JD006585, 2006.

Dobber, M., Dirksen, R., Voors, R., Mount, G. H., and Levelt, P.: Ground-based zenith sky abundances and in situ gas cross sections for ozone and nitrogen dioxide with the Earth Observing System Aura Ozone Monitoring Instrument, Appl. Opt., 44(14), 2846–2856, 2005.

Dobber, M., Dirksen, R. P. F., Levelt, van den Oord, G. H. J., Voors, R. H. M., et al.: Ozone Monitoring Instrument Calibration, IEEE Transactions on Geoscience and Remote Sensing, 44(5), 1209–1238, doi:10.1109/TGRS.2006.869987, 2006.

Eskes, H. J. and Boersma, K. F.: Averaging kernels for DOAS total-column satellite retrievals, Atmos. Chem. Phys., 3, 1285–1291, 2003.

Eskes, H. J., van Velthoven, P. F. J., Valks, P., and Kelder, H. M.: Assimilation of GOME total ozone satellite observations in a three-dimensional tracer transport model, Quart. J. Roy. Meteorol. Soc., 129, 1663, 2003.

Fournier, N., Stammes, P., de Graaf, M., van der A, R., Piters, A., Grzegorski, M., and Kokhanovsky, A.: Improving cloud information over deserts from SCIAMACHY oxygen A-band measurements, Atmos. Chem. Phys., 6, 163–172, 2006.

Heland, J., Schlager, H., Richter, A., and Burrows, J. P.: First comparison of tropospheric \chemNO_2 column densities retrieved from GOME measurements and in situ aircraft profile measurements, Geophys. Res. Lett., 29, 44, doi:10.1029/2002GL015528, 2002.

Herman, J. R. and Celarier, E. A.: Earth surface reflectivity climatology at 340-380 nm from TOMS data, J. Geophys. Res., 102, 28 003–28 011, 1997.

Houweling, S., Dentener, F. J., and Lelieveld, J.: The impact of nonmethane hydrocarbon compounds on tropospheric chemistry, J. Geophys. Res., 103, 10 673–10 696, 1998.

Jaeglé, L., Martin, R. V., Chance, K. V., Steinberger, L., Kurosu, T. P. Jacob, D. J., Modi, A. I., Yoboué, V., Sigha-Nkamdjou, L., Galy-Lacaux, C.: Satellite mapping of rain-induced nitric oxide emissions from soils, J. Geophys. Res., 109, D21310, doi:10.1029/2004JD004787, 2004.

Koelemeijer R. B. A., Stammes, P., Hovenier, J. W., and de Haan, J. F.: A fast method for retrieval of cloud parameters using oxygen A-band measurements from the Global Ozone Monitoring Instrument, J. Geophys. Res., 106, 3475–3490, 2001.

Koelemeijer, R. B. A., Stammes, P., Hovenier, J. W., and de Haan, J. F.: Global distributions of effective cloud fraction and cloud top derived from oxygen A band spectra measured by the Global Ozone Monitoring Experiment: Comparison to ISCCP data, J. Geophys. Res., 107(D12), 4151, doi:10.1029/2001JD000840, 2002.

Koelemeijer R. B. A., de Haan, J. F., and Stammes, P.: A database of spectral surface reflectivity in the range 335–772 nm derived from 5.5 years of GOME observations, J. Geophys. Res., 108(D2), 4070, doi: 10.1029/2002JD002429, 2003.

Konovalov, I. B., Beekmann, M., Vautard, R., Burrows, J. P. , Richter, A., Nüß, H., and Elansky, N.: Comparison and evaluation of modelled and GOME derived tropospheric \chemNO_2 columns over Western and Eastern Europe, Atmos. Chem. Phys., 5, 169–190, 2005.

Krotkov, N. A., Carn, S. A., Krueger, A. J., Bhartia, P. K., and Yang, K.: Band residual difference algorithm for retrieval of \chemSO_2 from the AURA Ozone Monitoring Instrument (OMI), IEEE Trans. Geosci. Remote Sensing, AURA Special Issue, 44(5), 1259–1266, 2006.

Kurosu, T. P., Chance, K., and Sioris, C. E.: Preliminary Results for \chemHCHO and \chemBrO from the Eos-Aura Ozone Monitorinhg Instrument, Proc. of SPIE, Vol. 5652, 116–123, 2005.

Lauer, A., Dameris, M., Richter, A., and Burrows, J. P.: Tropospheric \chemNO_2 columns: a comparison between model and retrieved data from GOME measurements, Atmos. Chem. Phys., 2, 67–78, 2002.

Leue, C., Wenig, M., Wagner, T., Klimm, O., Platt, U., and Jähne, B.: Quantitative analysis of NOx emissions from GOME satellite image sequences, J. Geophys. Res., 106, 5493–5505, 2001.

Levelt, P. F., van den Oord, G. H. J., Dobber, M. R., Mälkki, A., Visser, H., de Vries, J., Stammes, P., Lundell, J. O. V., and Saari, H.: The Ozone Monitoring Instrument, IEEE Trans. on Geosci. Rem. Sens., 44(5), doi:10.1109/TGRS.2006.872333, 2006a.

Levelt, P. F., Hilsenrath, E., Leppelmeier, G. W., van den Oord, G. H. J., Bhartia, P. K., Tamminen, J., de Haan, J. F., and Veefkind, J. P.: Science Objectives of the Ozone Monitoring Instrument, IEEE Trans. on Geosci. Rem. Sens., 44(5), doi:10.1109/TGRS.2006.872336, 2006b.

Ma, J., Richter, A., Burrows, J. P., Nüß, H., and van Aardenne, J. A.: Comparison of model-simulated tropospheric \chemNO_2 over China with GOME-satellite data, Atmos. Environ., 40, 593–604, 2006.

Martin, R. V., Jacob, D. J., Chance, K. V., Kurosu, T. P., Palmer, P. I., and Evans, M. J.: Global inventory of Nitrogen Dioxide Emissions Constrained by Space-based Observations of \chemNO_2 Columns, J. Geophys. Res., 108, 4537, doi:10.1029/2003/JD003453, 2003.

Martin, R. V., Parrish, D. D., Ryerson, T. B., Nicks Jr., D. K., Chance, K., Kurosu, T. P., Jacob, D. J., Sturges, E. D., Fried, A., and Wert, B. P.: Evaluation of GOME satellite measurements of tropospheric \chemNO_2 and \chemHCHO using regional data from aircraft campaigns in the southeastern United States, J. Geophys. Res., 109(D24), D24307, doi:10.1029/2004JD004869, 2004.

Martin, R. V., Sioris, C. E., Chance, K., Ryerson, T. B., Bertram, T. H., Wooldridge, P. J., Cohen, R. C., Neuman, J. A., Swanson, A., and Flocke, F. M.: Evaluation of space-based constraints on global nitrogen oxide emissions with regional aircraft measurements over and downwind of eastern North America, J. Geophys. Res., 111, D15308, doi:10.1029/2005JD006680, 2006.

Olivier, J., Peters, J., Granier, C., Pétron, G., Müller, J.-F., and Wallens, S.: Present and future surface emissions of atmospheric compounds, POET report #2, EU project EVK2-1999-00011, 2003.

van den Oord, G. H. J., Rozemeijer, N. C., Schenkelaars, V., Levelt, P. F., Dobber, M. R., Voors, R. H. M., Claas, J., ter Linden, M., de Haan, C., van de Berg, T.: OMI Level 0 to 1b Processing and Operational Aspects, IEEE Trans. on Geosci. Rem. Sens., 44(5), doi:10.1109/TGRS.2006.872935, 2006.

Ordó\~nez, C., Richter, A., Steinbacher, M., Zellweger, C., Nüß, H., J., Burrows, P., and Prév\^ot, A. S. H. (2006): Comparison of 7 years of satellite-borne and ground-based tropospheric \chemNO_2 measurements around Milan, Italy, J. Geophys. Res., 111, D05310, doi:10.1029/2005JD006305, 2006.

Petritoli, A., Bonasoni, P., Giovanelli, G., et al.: First comparison between ground-based and satellite-borne measurements of tropospheric nitrogen dioxide in the Po basin, J. Geophys. Res., 109, D15307, doi:10.1029/2004JD004547, 2004.

Petritoli, A., Palazzi, E., Volta, C., and Giovanelli, G.: Validation of NO2 tropospheric columns from space in the Po Valley (Italy), in: Tropospheric sounding from space, ACCENT-TROPOSAT-2 in 2004-5, edited by: Burrows, J. P. and Borrell, P., 308–312, 2005.

Platt, U.: Differential Optical Absorption Spectroscopy(DOAS), in: Air monitoring by Spectroscopic Techniques, edited by: Sigrist, M. W., Chemical Analysis, 127, 27–76, 1994.

Richter, A., Burrows, J. P., Nüß, H., Granier, C., and Niemeier, U.: Increase in tropospheric nitrogen dioxide over China observed from space, Nature, 437, 129–132, doi:10.1038/nature04092, 2005.

Riishøjgaard, L. P.: A direct way of specifying flow-dependent background error correlations for meteorological analysis systems, Tellus A, 50, 42–57, doi:10.1034/j.1600-0870.1998.00004.x, 1998.

Savage, N. H., Law, K. S., Pyle, J. A., Richter, A., Nüß, H., and Burrows, J. P.: Using GOME \chemNO_2 satellite data to examine regional differences in TOMCAT model performance, Atmos. Chem. Phys., 4, 1895–1912, 2004.

Schaub, D., Boersma, K. F., Kaiser, J. W., Weiss, A. K. , Folini, D., Eskes, H. J., and Buchmann, B.: Comparison of GOME tropospheric \chemNO_2 columns with \chemNO_2 profiles deduced from ground-based in situ measurements, Atmos. Chem. Phys., 6, 3211–3229, 2006.

Schaub, D., Boersma, K. F., Keller, J., Folini, D., Brunner, D., Buchmann, B., Berresheim, H., and Staehelin, J.: SCIAMACHY tropospheric NO2 over the Alpine region and importance of pixel surface pressure for the column retrieval, Atmos. Chem. Phys. Discuss., 7, 429–468, 2007.

Stammes, P.: Spectral radiance modeling in the UV-Visible range, IRS2000: in: Current problems in atmospheric radiation, edited by: Smith, W. L. and Timofeyev, Y. J., 385–388, A. Deepak, Hampton, Va, USA, 2000.

Vandaele, A. C., Hermans, C. P., Simon, C., Carleer, M., Colin, R., Fally, S., Merienne, M. F., Jenouvrier, A., and Cocquart, B.: Measurements of the \chemNO_2 absorption cross-section from 42 000 cm−1 to 10 000 cm−1 (238–1000 nm) at 220 K and 294 K, J. Quant. Spectrosc. Radiat. Transfer, 59, 171–184, 1998.

van der A, R. J., Peters, D. H. M. U., Eskes, H. J., Boersma, K. F., Van Roozendael, M., De Smedt, I., and Kelder, H. M.: Detection of the trend and seasonal variation in tropospheric \chemNO_2 over China, J. Geophys. Res., 111, D12317, doi:10.1029/2005JD006594, 2006.

van Noije, T. P. C., Eskes, H. J., Dentener, F. J., Stevenson, D. S., Ellingsen, K., et al.: Multi-model ensemble simulations of tropospheric \chemNO_2 compared with GOME retrievals for the year 2000, Atmos. Chem. Phys., 6, 2943–2979, 2006.

Veefkind, J. P. and de Haan, J. F.: DOAS total \chemO_3 algorithm, in: OMI Algorithm Theoretical Basis Document, vol. 2, OMI Ozone Product, ATB-OMI-02, Version 2.0, edited by: P. K. Bhartia, NASA Distrib. Active Archive Cent., Greenbelt, Md., Aug. 2002.

Velders, G. J. M., Granier, C., Portmann, R. W., Pfeilsticker, K., Wenig, M., Wagner, T., Platt, U., Richter, A., and Burrows, J. P.: Global tropospheric \chemNO_2 column distributions: Comparing 3-D model calculations with GOME measurements, J. Geophys. Res., 106, 12 643–12 660, 2001.

Voors, R., Dobber, M., Dirksen, R., and Levelt, P.: Method of calibration to correct for cloud-induced wavelength shifts in the Aura satellite�s Ozone Monitoring Instrument, Appl. Opt., 45(15), 3652–3658, 2006.

Wang, P., Stammes, P., and Fournier, N.: Test and first validation of FRESCO+, Proceedings of SPIE, 6362 pp., 13–20, Remote Sensing of Clouds and the Atmosphere XI, edited by: Slusser, R., Schäfer, K., and Camerón, A., 2006.

WMO: Annual Report, Bass, Johnsten, 1975.