Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

Impact of acetone (photo) oxidation on HOx production in the UT/LMS based on CARIBIC passenger aircraft observations and EMAC simulations

MPG-Autoren
/persons/resource/persons100865

Brenninkmeijer,  C. A. M.
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

Externe Ressourcen
Es sind keine externen Ressourcen hinterlegt
Volltexte (beschränkter Zugriff)
Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte in PuRe verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Neumaier, M., Ruhnke, R., Kirner, O., Ziereis, H., Stratmann, G., Brenninkmeijer, C. A. M., et al. (2014). Impact of acetone (photo) oxidation on HOx production in the UT/LMS based on CARIBIC passenger aircraft observations and EMAC simulations. Geophysical Research Letters, 41(9), 3289-3297. doi:10.1002/2014GL059480.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0024-B260-4
Zusammenfassung
Until a decade ago, acetone was assumed to be a dominant HOx source in the dry extra-tropical upper troposphere (ex-UT). New photodissociation quantum yields of acetone and the lack of representative data from the ex-UT challenged that assumption. Regular mass spectrometric observations onboard the Civil Aircraft for the Regular Investigation of the atmosphere Based on an Instrument Container (CARIBIC) passenger aircraft deliver the first representative distribution of acetone in the UT/LMS (UT/lowermost stratosphere). Based on diverse CARIBIC trace gas data and non-observed parameters taken from the model ECHAM5/MESSy for Atmospheric Chemistry, we quantify the HOx source in the UT/LMS from (photo) oxidation of acetone. The findings are contrasted to HOx production from ozone photolysis, overall the dominant tropospheric HOx source. It is shown that HOx production from acetone (photo) oxidation reaches up to 95% of the HOx source from ozone photolysis in autumn in the UT and on average similar to 61% in summer. That is, acetone is a significant source of HOx in the UT/LMS.