Original title: Závislost aktivace aerosolu na meteorologických podmínkách
Translated title: Dependence of aerosol activation on meteorological conditions
Authors: Zíková, Naděžda ; Pokorná, Petra ; Sedlák, Pavel ; Ždímal, Vladimír
Document type: Papers
Conference/Event: výroční konference České aerosolové společnosti /21./, Kutná hora (CZ), 20221003
Year: 2022
Language: cze
Abstract: [cze] [eng]
V šesté hodnotící zprávě IPCC byla nejvyšší hodnota aerosolového forcingu připsána tzv. nepřímému aerosolovému efektu, tedy interakci mezi atmosférickým aerosolem (AA) a oblačností (Arias a kol., 2021). Tato interakce závisí na množství aktivovaných oblačných jader, což je veličina, kterou je náročné měřit i modelovat. Proto byl zkoumán vliv velikostně diferencované aktivace AA na meteorologických veličinách a jevech. Four intensive in-situ campaigns focused on aerosol-cloud interactions were performed in the autumn and spring months from Nov 2018 to Apr 2020 at Milešovka Mountain in Czechia to bring more insight into size-dependent aerosol activation and dependence on its origin for a wide variety of meteorological parameters. Most activated particles were larger than 100 nm, with a mode over 200 nm. For the description of the changes in the activation, no effect of photochemistry was found, in contrast, some dependence on relative humidity, temperature, wind speed, and liquid water content (LWC) proved to be useful. The strongest connection was found between activation and LWC. For LWC below 0.1 g/m3, in the LWC-limited regime, the LWC values and variables effecting the LWC were the main factors influencing the activation, while different parameters could have played a role at LWCs over 0.1 g/m3, in the LWC-independent regime.
Keywords: activation; atmospheric aerosols; meteorological phenomena
Project no.: LM2018122 (CEP), GJ18-15065Y (CEP), 871115
Funding provider: GA MŠk, GA ČR
Host item entry: Sborník 21. výroční konference České aerosolové společnosti, ISBN 978-80-908653-0-3
Rights: This work is protected under the Copyright Act No. 121/2000 Coll.

Institution: Institute of Chemical Process Fundamentals AS ČR (web)
External URL: http://cas.icpf.cas.cz/download/Sbornik_VKCAS_2022.pdf
Original record: https://hdl.handle.net/11104/0334530

Permalink: http://www.nusl.cz/ntk/nusl-510665


The record appears in these collections:
Research > Institutes ASCR > Institute of Chemical Process Fundamentals
Conference materials > Papers