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| Titel |
Fast NO2 retrievals from Odin-OSIRIS limb scatter measurements |
| VerfasserIn |
A. E. Bourassa, C. A. McLinden, C. E. Sioris, S. Brohede, A. F. Bathgate, E. J. Llewellyn, D. A. Degenstein |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 4, no. 5 ; Nr. 4, no. 5 (2011-05-26), S.965-972 |
| Datensatznummer |
250001987
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| Publikation (Nr.) |
 copernicus.org/amt-4-965-2011.pdf |
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| Zusammenfassung |
| The feasibility of retrieving vertical profiles of NO2 from space-based
measurements of limb scattered sunlight has been demonstrated using several
different data sets since the 1980's. The NO2 data product routinely
retrieved from measurements made by the Optical Spectrograph and InfraRed
Imaging System (OSIRIS) instrument onboard the Odin satellite uses a spectral
fitting technique over the 437 to 451 nm range, over which there are 36
individual wavelength measurements. In this work we present a proof of
concept technique for the retrieval of NO2 using only 4 of the 36 OSIRIS
measurements in this wavelength range, which reduces the computational cost
by almost an order of magnitude. The method is an adaptation of a triplet
analysis technique that is currently used for the OSIRIS retrievals of ozone
at Chappuis band wavelengths. The results obtained are shown to be in very
good agreement with the spectral fit method, and provide an important
alternative for applications where the computational burden is very high.
Additionally this provides a baseline for future instrument design in terms
of cost effectiveness and reducing spectral range requirements. |
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