Using MERIS data in the calculation of NO2 airmass factors
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Using MERIS data in the calculation of NO2 airmass factors J. Leitão, A. Heckel, A. Richter , T. Dinter, W. von Hoyningen-Huene, A. Kokhanovsky, and J.P. Burrows. Accent Workshop Tropospheric NO2 measured by satellites KNMI, De Bilt, The Netherlands, 10-12 Sept 2007.

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How to do? Using data of MERIS instrument

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Using MERIS data in the calculation of NO2 airmass factorsJ. Leitão, A. Heckel, A. Richter, T. Dinter, W. von Hoyningen-Huene, A. Kokhanovsky, and J.P. Burrows

Accent Workshop Tropospheric NO2 measured by satellitesKNMI, De Bilt, The Netherlands, 10-12 Sept 2007


Focus of work – The improvement of the a priori assumptions used for the computation of the NO2 airmass factor (AMF).

Why? – Aerosol and albedo can have great impact on NO2 AMF and currently the spatial and time variability of these are not considered in the AMF computation.

What is the plan? – Include in the retrieval method data that can be continuously updated (real measurements and dynamical “climatology”).

  • How to do?

  • Using data of MERIS instrument

  • BAER algorithm retrieves AOT data, surface reflectance values and also cloud cover information

  • New dataset to be incorporated in the retrieval method of tropospheric NO2.


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