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  Assessing aerosol-cloud relationships from dual-field-of-view-polarization lidar: Results and perspectives

Jiménez, C., Ansmann, A., Engelmann, R., Seifert, P., Radenz, M., Hofer, J., Griesche, H., Althausen, D., Baars, H. (2023): Assessing aerosol-cloud relationships from dual-field-of-view-polarization lidar: Results and perspectives, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4952

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021351 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021351_1
Genre: Conference Paper

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 Creators:
Jiménez, Cristofer1, Author
Ansmann, Albert1, Author
Engelmann, Ronny1, Author
Seifert, Patric1, Author
Radenz, Martin1, Author
Hofer, Julian1, Author
Griesche, Hannes1, Author
Althausen, Dietrich1, Author
Baars, Holger1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: Cloud-droplet, -ice as well as CCN and INP concentrations, stand as key parameters to improve our knowledge of cloud microphysics and dynamics and to approach a better understanding of aerosol impacts on Earth's radiative and precipitation budgets. This contribution will focus on the relationship between aerosol- and liquid-cloud properties by means of long-term observations with dual-field-of-view polarization lidars, which allow the spatiotemporal sampling of aerosol-microphysical properties, relevant for CCN and INP estimates from the ground-up to the Stratosphere, and of the droplet-number concentration and effective radius at liquid-cloud layers, only possible with the new dual-field-of-view feature. We performed measurements since 2019 at three strategic locations: in the pristine Punta Arenas (south tip of Chile), in the dry and often-polluted city of Dushanbe (in Central Asia), and in the Arctic on board of Polarstern. This lidar-based dataset of collocated aerosol and cloud properties was used to investigate the cloud response to local conditions, in which we found similar cloud-droplet numbers for Punta Arenas and the Arctic (in the order of 100 cm-3), but much larger concentrations for Central Asia reaching values in the order of 500 cm-3 in Dushanbe. Preliminary results on the co-variability of cloud-droplet and CCN number (aerosol-cloud-interaction index) show the highest correlations at Punta Arenas, close to 0.85 on the monthly scale. The potential of these aerosol-cloud scenes to learn about the aerosol-cloud radiative effect, as well as to look into cloud processes will be discussed, giving focus to the observational scale.

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
 Pages: -
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 Identifiers: DOI: 10.57757/IUGG23-4952
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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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