NASA's Aura satellite sensors are tracking important atmospheric pollutants from space since its launch in ... July, 2004. The Ozone Monitoring Instrument (OMI), one of the four Aura satellite sensors with its 2600 km viewing swath width provides daily global measurements of four important US Environmental Protection Agency's criteria pollutants (Tropospheric ozone, Nitrogen dioxide, Sulfur dioxide and Aerosols from biomass burning and industrial emissions, HCHO, BrO, OClO and surface UV irradiance. OMI is a contribution of the Netherlands Agency for Aerospace Programs (NIVR)in collaboration with Finish Meterological Institute (FMI), to the US EOS-Aura Mission. The principal investigator's (Dr. Pieternel Levelt) institute is the KNMI (Royal Netherlands Meteorological Institute).
Nitrogen dioxide is an important chemical species in both the stratosphere, where it plays a key role in ozone chemistry, and in the troposphere, where it is a precursor to ozone production. In the troposphere, it is produced in various combustion processes and in lightning and is an indicator of poor air quality.
The algorithm leads for the NO2 products OMNO2 and OMNO2G are NASA OMI scientist Dr. Nickolay Krotkov and KNMI Scientist Dr. Pepijn Veefkind.
OMNO2G data product is a special Level-2 Gridded Product where pixel level data are binned into 0.25x0.25 degree global grids. It contains the data for all L2 scenes that have observation time betweeen UTC times of 00:00:00 and 23:59:59.9999. All data pixels that fall in a grid box are saved Without Averaging. Scientist can apply data filtering scheme of their choice and create new gridded products. The GES DISC developed interactive tool Giovanni ( http://giovanni.gsfc.nasa.gov/ ) provides on-line web based capabilities to browse and explore these data.
The OMNO2G data product contains almost all parameters that are contained in OMNO2 product. OMNO2G data are stored in EOS Hierarchical Data Format (HDF-EOS5). Each file contains data from the day lit portion of the orbit (~14 orbits). The average file size for the OMNO2G data product is about 115 Mbytes.
A short Readme Document giving brief algorithm description and a document containing known data quality related issues for the OMNO2 product, the source of OMNO2G data have been provided by the OMNO2 Algorithm leads.( http://disc.gsfc.nasa.gov/Aura/OMI/omno2g_v003.shtml )
This Data set (second public release of collection 3) is better than the earlier version but it is not fully validated yet. Before using it in any publication please contact algorithm team lead for the current known problems and updates and see data quality documents available at the product information site http://disc.sci.gsfc.nasa.gov/Aura/OMI/omno2g_v003.shtml
Ahmad, S. P., P. F. Levelt, P. K. Bhartia, E. Hilsenrath, G. W. Leppelmeier,and J. E. Johnson, "Atmospheric Products from the Ozone Monitoring Instrument(OMI)", Proceedings of SPIE conference on Earth Observing Systems VIII, San Diego, California, Aug 3-8, ... 2003. http://disc.sci.gsfc.nasa.gov/acdisc/ozone/docs/omi-spie-2003.doc
Brinksma, E. J., K. F. Boersma, and P. F. Levelt, OMI-Validation Requirements, May 16, 2003.
Bucsela, E., E. Celarier, M. Wenig, J. Gleason, P. Veefkind, K.F. Boersma, E. Brinksma, Algorithm for NO2 vertical column retrieval from the Ozone Monitoring Instrument, IEEE Transactions on Geoscience and Remote Sensing, 44, 1245-1258, 2006.
Burrows, J.P., A. Richter, A. Dehn, B. Deters, S. Himmelmann, S. Voigt, and J. Orphal, Atmospheric remote sensing reference data from GOME - 2. Temperature-dependent absorption cross-sections of O3 in the 231-794 nm range, J. Quant. Spectrosc. Radiat. Transfer 61, 509-517, 1999.
Chance, K. V., and R. J. D. Spurr, Ring effect studies: Rayleigh scattering, including molecular parameters for rotational Raman scattering, and the Fraunhofer spectrum, Applied Optics, 36, 5224, 1997.
Palmer, P.I., D.J. Jacob, K. Chance, R.V. Martin, R.J.D. Spurr, T.P. Kurosu, I. Bey, R. Yantosca, A. Fiore, Air mass factor formulation for spectroscopic measurements from satellites: Application to formaldehyde retrievals from the Global Ozone Monitoring Experiment, J. Geophys. Res., 106, 14539, 2001.
Levelt, P.F., G.H.J. van den Oord, M.R. Dobber, A. Malkki, H. Visser, J. de Vries, P. Stammes, J. Lundell and H. Saari, The Ozone Monitoring Instrument, IEEE Trans. Geo. Rem. Sens., 2006, Vol. 44, No. 5, 1093-1101, doi:10.1109/TGRS.2006.872333.
Levelt, P.F., E. Hilsenrath, G.W. Leppelmeier, G.H.J. van den Oord, P.K. Bhartia, J. Tamminen, J.F. de Haan en J.P. Veefkind, Science Objectives of the Ozone Monitoring Instrument, IEEE Trans. Geo. Rem. Sens., 2006, Vol. 44, No. 5, 1199-1208, doi:10.1109/TGRS.2006.872336.
Schoeberl, M.R., A.R. Douglass, E. Hilsenrath, P.K. Bhartia, R. Beer, J.W. Waters, M.R. Gunson, L. Froidevaux, J.C. Gille, J.J. Barnett, P.F. Levelt and P. DeCola, Overview of the EOS aura mission, IEEE Trans. Geo. Rem. Sens., 2006, Vol. 44, No. 5, 1066-1074, doi:10.1109/TGRS.2005.861950.
Schoeberl, M.R., A.R. Douglass, E. Hilsenrath, P.K. Bhartia, J. Barnett, J. Gille, R. Beer, M. Gunson, J. Waters, P.F. Levelt,P. DeCola, "The EOS Aura Mission," EOS, Transactions, American Geophysical Union 85 , Number 18, 4 May 2004. [Preprint] http://aura.gsfc.nasa.gov/project/eos-agu-aura-article.pdf
Vandaele A.C., C. Hermans, P.C. Simon, M. Carleer, R. Colin, S. Fally, M.F. M. Aerienne, A. Jenouvrier, and B. Coquart, Measurements of the NO2 absorption cross-section from 42000 cm-1 to 10000 cm-1 (238-1000 nm) at 220 K and 294 K, J. Quant. Spectrosc. Radiat. Transfer 59, 171-184, 1998.