Počet záznamů: 1
Variability in Activation Properties in Relation to Meteorological Phenomena.
- 1.
SYSNO ASEP 0546798 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Variability in Activation Properties in Relation to Meteorological Phenomena. Tvůrce(i) Zíková, Naděžda (UCHP-M) RID, ORCID, SAI
Pokorná, Petra (UCHP-M) ORCID, RID, SAI
Makeš, Otakar (UCHP-M) RID, ORCID, SAI
Rotrekl, Jan (UCHP-M) RID, ORCID, SAI
Sedlák, Pavel (UFA-U) RID, ORCID
Pešice, Petr (UFA-U) RID, ORCID
Ždímal, Vladimír (UCHP-M) RID, ORCID, SAIZdroj.dok. Journal of Hydrometeorology - ISSN 1525-755X
Roč. 22, č. 10 (2021), s. 2565-2579Poč.str. 15 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova aerosols ; In situ atmospheric observations ; aerosol-cloud interaction Vědní obor RIV DG - Vědy o atmosféře, meteorologie Obor OECD Meteorology and atmospheric sciences Vědní obor RIV – spolupráce Ústav fyziky atmosféry - Vědy o atmosféře, meteorologie CEP GJ18-15065Y GA ČR - Grantová agentura ČR LM2018122 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UCHP-M - RVO:67985858 ; UFA-U - RVO:68378289 UT WOS 000757151800005 EID SCOPUS 85121682421 DOI 10.1175/JHM-D-21-0064.1 Anotace In situ campaigns focused on aerosol–cloud interactions were performed to describe the size-dependent activation of aerosols of various origins during variable meteorological conditions. Low cloud episodes, coded as fog, freezing fog, or rain with fog, were compared with nonphenomenon episodes. From the difference in aerosols measured behind the whole air inlet and PM2.5 inlet, the activated fraction (AF a share of activated particles from all those available) was calculated. For fog, the AF was stable, resulting in a small variability in the activated size. During freezing fog, a higher variability in supersaturation was deduced from larger variability in the AF and smaller effective radii of cloud droplets. The AF during rain with fog showed a connection to the air mass origin, less effective activation, and smaller cloud droplets. The analysis of the relationship between meteorological conditions and activations suggested that the different hydrometeors were connected with different air masses. No effect of photochemistry was found. In contrast, some dependence on relative humidity, temperature, wind speed, and liquid water content (LWC) was described. With increasing humidity, smaller particles were able to activate. For lower RH, the importance of supersaturation fluctuations increased, moving to a fluctuation-influenced regime. The strongest connection was found between activation and LWC, for the LWC below 0.10 g m−3, a strong decrease in activated particle size was found with increasing LWC, due to turbulence, number of particles, and availability of condensable water. From 0.10 g m−3 LWC and higher, the LWC and the connected supersaturation could be the main factors influencing the activation. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2022 Elektronická adresa https://journals.ametsoc.org/view/journals/hydr/22/10/JHM-D-21-0064.1.xml
Počet záznamů: 1