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| Titel |
Comparisons between satellite-derived datasets of stratospheric NOy species: using a photochemical model to account for diurnal variations |
| VerfasserIn |
Patrick Sheese, Kaley Walker, Chris McLinden, Chris Boone, Peter Bernath, John Burrows, Bernd Funke, Didier Fussen, Gloria Manney, Donal Murtagh, Cora Randall, Piera Raspollini, Alexei Rozanov, James Russell, Jo Urban, Thomas von Clarmann, Joseph Zawodny |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250099970
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| Publikation (Nr.) |
 EGU/EGU2014-15829.pdf |
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| Zusammenfassung |
| The ACE-FTS (Atmospheric Chemistry Experiment – Fourier Transform Spectrometer)
instrument on the Canadian satellite SCISAT, which has been in operation now for over
10 years, has the capability of deriving stratospheric profiles of many of the NOy
(NO + NO2+ NO3+ 2xN2O5+ HNO3+ HNO4+ ClONO2+ BrONO2) species.
However, as a solar occultation instrument, opportunities for ACE-FTS and another
given satellite instrument to observe a common air mass, can be rather limited. In
the case of comparing species that exhibit significant diurnal variation, finding
“coincident” measurements can be even more difficult. In order for the measurements to be
considered common-volume, the required difference between measurement times can be
limitingly small. In this study, for each ACE-FTS measurement, we use a photochemical
box model to simulate the diurnal variations of different NOy species over that
day. The ACE-FTS NOy profiles are then scaled to the local times of coincident
measurements from different satellite instruments—GOMOS, MIPAS, MLS, OSIRIS,
POAM III, SAGE III, SCIAMACHY, and SMR. This allows for a much larger
number of coincidences to be utilized. This study will discuss the advantages and
limitations of this technique, as well as the results from comparing NO, NO2, N2O5,
HNO3, and ClONO2 between ACE-FTS and other atmospheric limb sounders. |
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