EGU2020-3958
https://doi.org/10.5194/egusphere-egu2020-3958
EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Volcanic influence on STRATOCLIM aircraft observations 2017 in the Asian Monsoon, studies with the transient CCM EMAC

Christoph Brühl1, Hans Schlager2, Ralf Weigel1,3, Oliver Appel1,3, Stephan Borrmann1,3, Jos Lelieveld1, and Jennifer Schallock1
Christoph Brühl et al.
  • 1Max-Planck-Institut für Chemie, Abt. Luftchemie, Mainz, Germany (christoph.bruehl@mpic.de)
  • 2DLR, Oberpfaffenhofen, Germany
  • 3Johannes Gutenberg University, Mainz, Germany

Results from a transient 28 year simulation with the chemistry climate model EMAC with interactive modal aerosol scheme nudged to observed tropospheric meteorology (ERA-Interim) which includes about 500 volcanic SO2 injections are compared with in situ aircraft observations in the UT/LS in the Asian Monsoon anticyclone. Enhanced SO2 observed by STRATOMAS and enhanced sulfate aerosol observed by ERICA in the LS point to impact of several explosive eruptions of the Indonesian volcano Sinabung during summer 2017 seen by the OSIRIS satellite instrument. This is supported by freshly nucleated particles observed by COPAS in the UTLS. We present several sensitivity studies with EMAC with different assumptions on the injection patterns in comparison to the observations in July/August 2017.  
The monsoon dynamics distributes the volcanic material together with Asian pollution into the global lower stratosphere.

How to cite: Brühl, C., Schlager, H., Weigel, R., Appel, O., Borrmann, S., Lelieveld, J., and Schallock, J.: Volcanic influence on STRATOCLIM aircraft observations 2017 in the Asian Monsoon, studies with the transient CCM EMAC, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-3958, https://doi.org/10.5194/egusphere-egu2020-3958, 2020

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