<div class="csl-bib-body">
<div class="csl-entry">Reyzek, F., Bothen, N., Schwidetzky, R., Seifried, T. M., Bieber, P., Pöschl, U., Meister, K., Bonn, M., Fröhlich-Nowoisky, J., & Grothe, H. (2024, August 29). <i>Aggregation of ice-nucleating macromolecules from birch pollen determines ice nucleation efficiency</i> [Poster Presentation]. European Aerosol Conference 2024, Tampere, Finland. http://hdl.handle.net/20.500.12708/204755</div>
</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/204755
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dc.description.abstract
A wide range of aerosols, including dust, soot, and biological particles, can serve as ice nuclei, initiating the freezing of supercooled cloud droplets. This process significantly impacts cloud characteristics and, consequently, weather and climate.
Some biological ice nuclei exhibit exceptionally high nucleation temperatures. Although Ice Nucleating Macromolecules (INMs) found in pollen are not the most active ice nuclei, they are abundant. This is evident from the widespread distribution of certain tree species, such as Betula pendula, and their presence throughout the trees' tissues (Felgitsch et al, 2018; Seifried et al, 2020). Recent studies have shown that certain tree-based INMs demonstrate ice nucleation activity above -10°C (Gute & Abbat, 2020; Murray et al, 2020). These findings suggest that INMs emitted from the biosphere may play a more significant role in atmospheric processes than previously understood.
Our results show that Betula pendula INMs comprise three distinct classes active at -6°C, -15°C, and -18°C, each in different concentrations. We observed that freeze-drying and freeze-thaw cycles markedly alter their ice nucleation capacity. Heat treatments and chemical analyses suggest that these INM classes may be variable sized aggregates, with larger aggregates being more efficient at nucleating ice. This hypothesis aligns with previous studies on fungal and bacterial ice nucleators. Our research highlights the significance of birch INMs in atmospheric ice nucleation, not only because of their prevalence, but also due to their occasional but notable high nucleation temperatures.
en
dc.language.iso
en
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dc.subject
ice nucleation
en
dc.subject
Betula pendula
en
dc.subject
ice-nucleating macromolecules
en
dc.title
Aggregation of ice-nucleating macromolecules from birch pollen determines ice nucleation efficiency
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.contributor.affiliation
Max Planck Institute for Chemistry, Germany
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dc.contributor.affiliation
University of British Columbia, Canada
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dc.contributor.affiliation
Max Planck Institute for Chemistry, Germany
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dc.contributor.affiliation
Max Planck Institute for Chemistry, Germany
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dc.type.category
Poster Presentation
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tuw.researchinfrastructure
Analytical Instrumentation Center
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tuw.researchTopic.id
M6
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tuw.researchTopic.id
E4
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tuw.researchTopic.name
Biological and Bioactive Materials
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tuw.researchTopic.name
Environmental Monitoring and Climate Adaptation
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tuw.researchTopic.value
75
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tuw.researchTopic.value
25
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tuw.publication.orgunit
E165-01-5 - Forschungsgruppe Physikalische Chemie von Aerosolpartikeln
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tuw.author.orcid
0000-0002-8146-0089
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tuw.author.orcid
0000-0002-9320-7339
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tuw.author.orcid
0000-0001-5971-2502
-
tuw.author.orcid
0009-0003-5159-7695
-
tuw.author.orcid
0000-0003-1412-3557
-
tuw.author.orcid
0000-0002-6853-6325
-
tuw.author.orcid
0000-0001-6851-8453
-
tuw.author.orcid
0000-0002-1278-0054
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tuw.author.orcid
0000-0002-2715-1429
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tuw.event.name
European Aerosol Conference 2024
en
tuw.event.startdate
25-08-2024
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tuw.event.enddate
30-08-2024
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tuw.event.online
On Site
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tuw.event.type
Event for scientific audience
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tuw.event.place
Tampere
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tuw.event.country
FI
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tuw.event.institution
Finnish Association of Aerosol Science
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tuw.event.presenter
Reyzek, Florian
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wb.sciencebranch
Chemie
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wb.sciencebranch
Physik, Astronomie
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wb.sciencebranch
Werkstofftechnik
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wb.sciencebranch.oefos
1040
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wb.sciencebranch.oefos
1030
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wb.sciencebranch.oefos
2050
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wb.sciencebranch.value
50
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wb.sciencebranch.value
25
-
wb.sciencebranch.value
25
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item.languageiso639-1
en
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item.grantfulltext
none
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item.openairetype
conference poster not in proceedings
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item.openairecristype
http://purl.org/coar/resource_type/c_18co
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item.cerifentitytype
Publications
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item.fulltext
no Fulltext
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crisitem.author.dept
E165-01-5 - Forschungsgruppe Physikalische Chemie von Aerosolpartikeln
-
crisitem.author.dept
Max Planck Institute for Chemistry
-
crisitem.author.dept
E165-01-5 - Forschungsgruppe Physikalische Chemie von Aerosolpartikeln
-
crisitem.author.dept
E165-01-5 - Forschungsgruppe Physikalische Chemie von Aerosolpartikeln
-
crisitem.author.dept
Max Planck Institute for Chemistry
-
crisitem.author.dept
Max Planck Institute for Polymer Research
-
crisitem.author.dept
Max Planck Institute for Polymer Research
-
crisitem.author.dept
Max Planck Institute for Chemistry
-
crisitem.author.dept
E165-01-5 - Forschungsgruppe Physikalische Chemie von Aerosolpartikeln
