Highly Active Ice-Nucleating Particles at the Summer North Pole ...
The amount of ice versus supercooled water in clouds is important for their radiative properties and role in climate feedbacks. Hence, knowledge of the concentration of ice-nucleating particles (INPs) is needed. Generally, the concentrations of INPs are found to be very low in remote marine location...
Main Authors: | , , , , , , , , , , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
ETH Zurich
2022
|
Subjects: | |
Online Access: | https://dx.doi.org/10.3929/ethz-b-000541830 http://hdl.handle.net/20.500.11850/541830 |
id |
ftdatacite:10.3929/ethz-b-000541830 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.3929/ethz-b-000541830 2024-04-28T08:31:56+00:00 Highly Active Ice-Nucleating Particles at the Summer North Pole ... Porter, Grace C.E. Adams, Michael P. Brooks, Ian M. Ickes, Luisa Karlsson, Linn Leck, Caroline Salter, Matthew E. Schmale, Julia Siegel, Karolina Sikora, Sebastien N. F. Tarn, Mark D. Vüllers, Jutta Wernli, Heini Zieger, Paul Zinke, Julika Murray, Benjamin J. 2022 application/pdf https://dx.doi.org/10.3929/ethz-b-000541830 http://hdl.handle.net/20.500.11850/541830 en eng ETH Zurich article-journal Text ScholarlyArticle Journal Article 2022 ftdatacite https://doi.org/10.3929/ethz-b-000541830 2024-04-02T12:32:08Z The amount of ice versus supercooled water in clouds is important for their radiative properties and role in climate feedbacks. Hence, knowledge of the concentration of ice-nucleating particles (INPs) is needed. Generally, the concentrations of INPs are found to be very low in remote marine locations allowing cloud water to persist in a supercooled state. We had expected the concentrations of INPs at the North Pole to be very low given the distance from open ocean and terrestrial sources coupled with effective wet scavenging processes. Here we show that during summer 2018 (August and September) high concentrations of biological INPs (active at >−20°C) were sporadically present at the North Pole. In fact, INP concentrations were sometimes as high as those recorded at mid-latitude locations strongly impacted by highly active biological INPs, in strong contrast to the Southern Ocean. Furthermore, using a balloon borne sampler we demonstrated that INP concentrations were often different at the surface versus ... : Journal of Geophysical Research: Atmospheres, 127 (6) ... Article in Journal/Newspaper North Pole Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
description |
The amount of ice versus supercooled water in clouds is important for their radiative properties and role in climate feedbacks. Hence, knowledge of the concentration of ice-nucleating particles (INPs) is needed. Generally, the concentrations of INPs are found to be very low in remote marine locations allowing cloud water to persist in a supercooled state. We had expected the concentrations of INPs at the North Pole to be very low given the distance from open ocean and terrestrial sources coupled with effective wet scavenging processes. Here we show that during summer 2018 (August and September) high concentrations of biological INPs (active at >−20°C) were sporadically present at the North Pole. In fact, INP concentrations were sometimes as high as those recorded at mid-latitude locations strongly impacted by highly active biological INPs, in strong contrast to the Southern Ocean. Furthermore, using a balloon borne sampler we demonstrated that INP concentrations were often different at the surface versus ... : Journal of Geophysical Research: Atmospheres, 127 (6) ... |
format |
Article in Journal/Newspaper |
author |
Porter, Grace C.E. Adams, Michael P. Brooks, Ian M. Ickes, Luisa Karlsson, Linn Leck, Caroline Salter, Matthew E. Schmale, Julia Siegel, Karolina Sikora, Sebastien N. F. Tarn, Mark D. Vüllers, Jutta Wernli, Heini Zieger, Paul Zinke, Julika Murray, Benjamin J. |
spellingShingle |
Porter, Grace C.E. Adams, Michael P. Brooks, Ian M. Ickes, Luisa Karlsson, Linn Leck, Caroline Salter, Matthew E. Schmale, Julia Siegel, Karolina Sikora, Sebastien N. F. Tarn, Mark D. Vüllers, Jutta Wernli, Heini Zieger, Paul Zinke, Julika Murray, Benjamin J. Highly Active Ice-Nucleating Particles at the Summer North Pole ... |
author_facet |
Porter, Grace C.E. Adams, Michael P. Brooks, Ian M. Ickes, Luisa Karlsson, Linn Leck, Caroline Salter, Matthew E. Schmale, Julia Siegel, Karolina Sikora, Sebastien N. F. Tarn, Mark D. Vüllers, Jutta Wernli, Heini Zieger, Paul Zinke, Julika Murray, Benjamin J. |
author_sort |
Porter, Grace C.E. |
title |
Highly Active Ice-Nucleating Particles at the Summer North Pole ... |
title_short |
Highly Active Ice-Nucleating Particles at the Summer North Pole ... |
title_full |
Highly Active Ice-Nucleating Particles at the Summer North Pole ... |
title_fullStr |
Highly Active Ice-Nucleating Particles at the Summer North Pole ... |
title_full_unstemmed |
Highly Active Ice-Nucleating Particles at the Summer North Pole ... |
title_sort |
highly active ice-nucleating particles at the summer north pole ... |
publisher |
ETH Zurich |
publishDate |
2022 |
url |
https://dx.doi.org/10.3929/ethz-b-000541830 http://hdl.handle.net/20.500.11850/541830 |
genre |
North Pole Southern Ocean |
genre_facet |
North Pole Southern Ocean |
op_doi |
https://doi.org/10.3929/ethz-b-000541830 |
_version_ |
1797589286607912960 |