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  Stratospheric aerosol characteristics from SCIAMACHY limb observations and their evolution after volcanic eruptions

Pohl, C., Wrana, F., Niemeier, U., Rozanov, A., Deshler, T., Burrows, J. P. (2023): Stratospheric aerosol characteristics from SCIAMACHY limb observations and their evolution after volcanic eruptions, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3538

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 Creators:
Pohl, Christine1, Author
Wrana, Felix1, Author
Niemeier, Ulrike1, Author
Rozanov, Alexei1, Author
Deshler, Terry1, Author
Burrows, John P.1, Author
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1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: Stratospheric aerosols play a key role in atmospheric chemistry and climate. They are considered a catalyst for ozone depletion, serve as condensation nuclei for polar stratospheric cloud formation, and, in large amounts, have a short-term impact on the Earth's radiative budget. The aerosol effects depend strongly on the aerosol particle size distribution (PSD). Despite its importance, available observations on PSD are rather limited, restricting the knowledge of chemical and climate aerosol feedback mechanisms. We present a novel aerosol climatology including the PSD, the effective radius, and the extinction coefficient from limb observations of SCIAMACHY (Scanning Imaging Absorption Spectrometer for Atmospheric Cartography) operated aboard Envisat between 2002 and 2012. The aerosol climatology is successfully evaluated with in-situ balloon-borne measurements from Wyoming and global aerosol products from different satellite instruments (SAGE II, SAGE III, OSIRIS). The data set significantly expands the limited knowledge of stratospheric aerosol properties and serves to a better understanding of aerosol microphysical processes. We demonstrate its potential by comparing the simulated and observed aerosol plume evolution after the volcanic eruptions of Manam (Jan 2005) and Sarychev (Jun 2009).

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
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 Identifiers: DOI: 10.57757/IUGG23-3538
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
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