Journal Article

FZJ-2023-01699

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Reconstructing high-resolution in-situ vertical carbon dioxide profiles in the sparsely monitored Asian monsoon region

Vogel, B. (Corresponding author)FZJ* ; Volk, C. M. ; Wintel, J. ; Lauther, V. ; Müller, R.FZJ* ; Patra, P. K. ; Riese, M.FZJ* ; Terao, Y. ; Stroh, F.FZJ*

2023
Springer Nature London

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Please use a persistent id in citations: http://hdl.handle.net/2128/34494  doi:10.1038/s43247-023-00725-5

Abstract: Atmospheric concentrations of the greenhouse gases carbon dioxide and nitrous oxide haveincreased substantially because of human activities. However, their sources in South Asia,which contribute strongly to the accelerating global growth of carbon dioxide and nitrousoxide, are poorly quantified. Here, we present aircraft measurements with high temporal andvertical resolution up to 20 km during the Asian summer monsoon where rapid upwardtransport of surface pollutants to greater altitudes occurs. Using Lagrangian model simulations, we successfully reconstruct observed carbon dioxide profiles leading to an improvedunderstanding of the vertical structure of carbon dioxide in the Asian monsoon region. Weshow that spatio-temporal patterns of carbon dioxide on the Indian subcontinent driven byregional flux variations rapidly propagate to approximately 13 km with slower ascent above.Enhanced carbon dioxide compared to the stratospheric background can be detected up to20 km. We suggest that the propagation of these signals from the surface to the stratospherecan be used to evaluate transport models and assess carbon dioxide fluxes in South Asia.

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Contributing Institute(s):

1. Stratosphäre (IEK-7)

Research Program(s):

1. 2112 - Climate Feedbacks (POF4-211) (POF4-211)

Appears in the scientific report 2023

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