Journal Article

FZJ-2015-06654

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png The first regular measurements of ozone, carbon monoxide and water vapour in the Pacific UTLS by IAGOS

Clark, H. (Corresponding author) ; Sauvage, B. ; Thouret, V. ; Nédélec, P. ; Blot, R. ; Wang, K.-Y. ; Smit, H. G. J.FZJ* ; Neis, P.FZJ* ; Petzold, A.FZJ* ; Athier, G. ; Boulanger, D. ; Cousin, J.-M. ; Beswick, K. ; Gallagher, M. ; Baumgardner, D. ; Kaiser, J. ; Flaud, J.-M. ; Wahner, A.FZJ* ; Volz-Thomas, A.FZJ* ; Cammas, J.-P.

2015
Inst. Stockholm

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Please use a persistent id in citations: http://hdl.handle.net/2128/9454  doi:10.3402/tellusb.v67.28385

Abstract: We present the features seen in the first 2 months (July and August 2012) of data collected over the Pacific by IAGOS (In-service Aircraft for a Global Observing System)-equipped aircraft. IAGOS is the continuation and development of the well-known MOZAIC (Measurement of Ozone and Water Vapour on Airbus in-service Aircraft) project where scientific instruments were carried on commercially operated A340 aircraft to make measurements of chemical species in the atmosphere. Here, we show data from an aircraft operated by China Airlines on routes from Taipei to Vancouver, which provided the first trans-Pacific measurements by an IAGOS-equipped aircraft. We describe the chemical composition of the extratropical upper troposphere/lower stratosphere (Ex-UTLS) across the Pacific basin in the Northern Hemisphere. The observed concentrations of ozone span a range from 18 to 500 ppbv indicating sources in the marine boundary layer and lowermost stratosphere, respectively. Concentrations of carbon monoxide (CO) greater than 400 ppbv are observed in the Ex-UTLS suggesting that plumes of pollution have been exported from the continent. These low concentrations of ozone and high concentrations of CO were rarely recorded in 8 yr of MOZAIC observations over the Atlantic.

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Contributing Institute(s):

1. Troposphäre (IEK-8)

Research Program(s):

1. 243 - Tropospheric trace substances and their transformation processes (POF3-243) (POF3-243)
2. IAGOS-D - In-Service Aircraft for a Global Observing System – German Contribution to the Main Phase of IAGOS (BMBF-20180331-IAGOSD) (BMBF-20180331-IAGOSD)
3. HITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406) (HITEC-20170406)

Appears in the scientific report 2015

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Database coverage:
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