Current retrieval and inter-comparisons results of Sciamachy Nighttime Nox
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Date
2014
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Environmental Physics and Remote sensing
Abstract
Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) performs lunar
occultation measurements over the high southern latitude
(50o S–90o S). Using the global spectra fitting method by
the differential optical depth approach and the optimal
estimation method, vertical profiles of nighttime NOx
(NO2 and NO3) are retrieved. The quality of the retrieved NOx products are verified by comparing SCIAMACHY nighttime NO2 result with other satellite instruments (HALOE and SAGE II) and NO3 results with
a simple chemical model outputs. Very promising results are obtained. The relative mean differences (rmd)
of SCIAMACHY-HALOE comparisons are within -16 %
to +3 % and the standard deviations (rms) within 4–16 %
between 25–38 km. The rmd and rms for SCIAMACHYSAGE II comparisons are within -9 % to +7 % and 10–
17 % between 22–39 km. The retrieved NO3 are in very
good agreement with the model calculations between 16
to 38 km within accuracy of 25 %.
Description
An article published by Institute of Environmental Physics and Remote sensing (IUP/Ife)
Keywords
stratospheric NOx, NO2, NO3, validation, SCIAMACHY, lunar occultation
Citation
Institute of Environmental Physics and Remote sensing (IUP/Ife), University of Bremen, Otto-Hahn-Allee 1, 28334