Articles | Volume 21, issue 15
Atmos. Chem. Phys., 21, 11689–11722, 2021
https://doi.org/10.5194/acp-21-11689-2021

Special issue: StratoClim stratospheric and upper tropospheric processes...

Atmos. Chem. Phys., 21, 11689–11722, 2021
https://doi.org/10.5194/acp-21-11689-2021
Research article
06 Aug 2021
Research article | 06 Aug 2021

In situ observation of new particle formation (NPF) in the tropical tropopause layer of the 2017 Asian monsoon anticyclone – Part 1: Summary of StratoClim results

Ralf Weigel et al.

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Subject: Aerosols | Research Activity: Field Measurements | Altitude Range: Stratosphere | Science Focus: Physics (physical properties and processes)
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Cited articles

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Short summary
In July and August 2017, eight StratoClim mission flights of the Geophysica reached up to 20 km in the Asian monsoon anticyclone. New particle formation (NPF) was identified in situ by abundant nucleation-mode aerosols (6–15 nm in diameter) with mixing ratios of up to 50 000 mg−1. NPF occurred most frequently at 12–16 km with fractions of non-volatile residues of down to 15 %. Abundance and productivity of observed NPF indicate its ability to promote the Asian tropopause aerosol layer.
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