Browsing by Author "Lamsal, L. N."

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    Retrieval of stratospheric NO3 vertical profiles from SCIAMACHY lunar occultation measurement over the Antarctic
    (Journal of Geophysical Research, 2005-10-26) Amekudzi, L. K.; Sinnhuber, B.-M.; Sheode, N. V.; Meyer, J.; Rozanov, A.; Lamsal, L. N.; Bovensmann, J. P. Burrows
    [1] NO3 vertical profiles have been retrieved over the Antarctic (60 –90 S) from the Scanning Imaging Absorption Spectrometer for Atmospheric Cartography (SCIAMACHY) lunar occultation spectra, using the visible spectral band (610–680 nm) containing NO3 absorption bands at 623 and 662 nm. The retrieved NO3 profiles agree well with calculations from a photochemical model constrained by retrieved O3 and analyzed temperatures in the altitude range between 24 and 45 km. Below about 35–40 km, observed NO3 is well reproduced by photochemical steady state calculations. Differences between observed and modeled NO3 are within the estimated accuracy of 20–35%, demonstrating the consistency of the NO3 retrieval and model.