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Technical Note: Characterisation of a DUALER instrument for the airborne measurement of peroxy radicals during AMMA 2006

Kartal, D. und Andrés-Hernández, M. D. und Reichert, L. und Schlager, H. und Burrows, J. P. (2010) Technical Note: Characterisation of a DUALER instrument for the airborne measurement of peroxy radicals during AMMA 2006. Atmospheric Chemistry and Physics, 10, Seiten 3047-3062.

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Offizielle URL: http://www.atmos-chem-phys.net/10/3047/2010

Kurzfassung

A DUALER (dual-channel airborne peroxy radical chemical amplifier) instrument has been developed and optimised for the airborne measurement of the total sum of peroxy radicals during the AMMA (African Monsoon Multidisciplinary Analyses) measurement campaign which took place in Burkina Faso in August 2006. The innovative feature of the instrument is that both reactors are sampling simultaneously from a common pre-reactor nozzle while the whole system is kept at a constant pressure to ensure more signal stability and accuracy. Laboratory experiments were conducted to characterise the stability of the NO2 detector signal and the chain length with the pressure. The results show that airborne measurements using chemical amplification require constant pressure at the luminol detector. Wall losses of main peroxy radicals HO2 and CH3O2 were investigated. The chain length was experimentally determined for different ambient mixtures and compared with simulations performed by a chemical box model. The DUALER instrument was successfully mounted within the German DLR-Falcon. The analysis of AMMA data utilises a validation procedure based on the O3 mixing ratios simultaneously measured onboard. The validation and analysis procedure is illustrated by means of the data measured during the AMMA campaign. The detection limit and the accuracy of the ambient measurements are also discussed.

Dokumentart:Zeitschriftenbeitrag
Titel:Technical Note: Characterisation of a DUALER instrument for the airborne measurement of peroxy radicals during AMMA 2006
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Kartal, D.Univ. of Bremen
Andrés-Hernández, M. D.Univ. of Bremen
Reichert, L.Univ. of Bremen
Schlager, H.DLR
Burrows, J. P.Univ. of Bremen
Datum:2010
Erschienen in:Atmospheric Chemistry and Physics
Referierte Publikation:Ja
In Open Access:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:10
Seitenbereich:Seiten 3047-3062
Status:veröffentlicht
Stichwörter:peroxy radicals, African monsoon, aircraft instruments
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Atmosphären- und Klimaforschung (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre > Atmosphärische Spurenstoffe
Hinterlegt von: Yasemin Yilmaz
Hinterlegt am:10 Dez 2010 11:14
Letzte Änderung:12 Dez 2013 21:08

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