Assessment of Hygroscopic Behavior of Arctic Aerosol by Contemporary Lidar and Radiosonde Observations
This study presents the hygroscopic properties of aerosols from the Arctic free troposphere by means of contemporary lidar and radiosonde observations only. It investigates the period from the Arctic Haze in spring towards the summer season in 2021. Therefore, a one-parameter growth curve model is a...
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ftdoajarticles:oai:doaj.org/article:81c61f98b62545409a8ffd271282146f 2024-09-30T14:30:03+00:00 Assessment of Hygroscopic Behavior of Arctic Aerosol by Contemporary Lidar and Radiosonde Observations Nele Eggers Sandra Graßl Christoph Ritter 2024-08-01T00:00:00Z https://doi.org/10.3390/rs16163087 https://doaj.org/article/81c61f98b62545409a8ffd271282146f EN eng MDPI AG https://www.mdpi.com/2072-4292/16/16/3087 https://doaj.org/toc/2072-4292 doi:10.3390/rs16163087 2072-4292 https://doaj.org/article/81c61f98b62545409a8ffd271282146f Remote Sensing, Vol 16, Iss 16, p 3087 (2024) arctic aerosol lidar hygroscopic growth Science Q article 2024 ftdoajarticles https://doi.org/10.3390/rs16163087 2024-09-02T15:34:37Z This study presents the hygroscopic properties of aerosols from the Arctic free troposphere by means of contemporary lidar and radiosonde observations only. It investigates the period from the Arctic Haze in spring towards the summer season in 2021. Therefore, a one-parameter growth curve model is applied to lidar data from the Koldewey Aerosol Raman Lidar (AWIPEV in Ny-Ålesund, Svalbard) and simultaneous radiosonde measurements. Hygroscopic growth depends on different factors like aerosol diameter and chemical composition. To detangle this dependency, three trends in hygroscopicity are additionally investigated by classifying the aerosol first by its dry color ratio, and then by its season and altitude. Generally, we found a complex altitude dependence with the least hygroscopic particles in the middle of the troposphere. The most hygroscopic aerosol is located in the upper free troposphere. A hypothesis based on prior lifting of the particles is given. The expected trend with aerosol diameter is not observed, which draws attention to the complex dependence of hygroscopic growth on geographical region and altitude, and to the development of backscatter with the aerosol size itself. In a seasonal overview, two different modes of stronger or weaker hygroscopic particles are additionally observed. Furthermore, two special days are discussed using the Mie theory. They show, on the one hand, the complexity of analyzing hygroscopic growth by means of lidar data, but on the other hand, they demonstrate that it is in fact measurable with this approach. For these two case studies, we calculated that the aerosol effective radius increased from <semantics> 0.16 μ m </semantics> (dry) to <semantics> 0.18 μ m </semantics> (wet) and from <semantics> 0.28 μ m </semantics> to <semantics> 0.32 μ m </semantics> for the second case. Article in Journal/Newspaper Arctic Ny Ålesund Ny-Ålesund Svalbard Directory of Open Access Journals: DOAJ Articles Arctic Ny-Ålesund Svalbard Remote Sensing 16 16 3087 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
arctic aerosol lidar hygroscopic growth Science Q |
spellingShingle |
arctic aerosol lidar hygroscopic growth Science Q Nele Eggers Sandra Graßl Christoph Ritter Assessment of Hygroscopic Behavior of Arctic Aerosol by Contemporary Lidar and Radiosonde Observations |
topic_facet |
arctic aerosol lidar hygroscopic growth Science Q |
description |
This study presents the hygroscopic properties of aerosols from the Arctic free troposphere by means of contemporary lidar and radiosonde observations only. It investigates the period from the Arctic Haze in spring towards the summer season in 2021. Therefore, a one-parameter growth curve model is applied to lidar data from the Koldewey Aerosol Raman Lidar (AWIPEV in Ny-Ålesund, Svalbard) and simultaneous radiosonde measurements. Hygroscopic growth depends on different factors like aerosol diameter and chemical composition. To detangle this dependency, three trends in hygroscopicity are additionally investigated by classifying the aerosol first by its dry color ratio, and then by its season and altitude. Generally, we found a complex altitude dependence with the least hygroscopic particles in the middle of the troposphere. The most hygroscopic aerosol is located in the upper free troposphere. A hypothesis based on prior lifting of the particles is given. The expected trend with aerosol diameter is not observed, which draws attention to the complex dependence of hygroscopic growth on geographical region and altitude, and to the development of backscatter with the aerosol size itself. In a seasonal overview, two different modes of stronger or weaker hygroscopic particles are additionally observed. Furthermore, two special days are discussed using the Mie theory. They show, on the one hand, the complexity of analyzing hygroscopic growth by means of lidar data, but on the other hand, they demonstrate that it is in fact measurable with this approach. For these two case studies, we calculated that the aerosol effective radius increased from <semantics> 0.16 μ m </semantics> (dry) to <semantics> 0.18 μ m </semantics> (wet) and from <semantics> 0.28 μ m </semantics> to <semantics> 0.32 μ m </semantics> for the second case. |
format |
Article in Journal/Newspaper |
author |
Nele Eggers Sandra Graßl Christoph Ritter |
author_facet |
Nele Eggers Sandra Graßl Christoph Ritter |
author_sort |
Nele Eggers |
title |
Assessment of Hygroscopic Behavior of Arctic Aerosol by Contemporary Lidar and Radiosonde Observations |
title_short |
Assessment of Hygroscopic Behavior of Arctic Aerosol by Contemporary Lidar and Radiosonde Observations |
title_full |
Assessment of Hygroscopic Behavior of Arctic Aerosol by Contemporary Lidar and Radiosonde Observations |
title_fullStr |
Assessment of Hygroscopic Behavior of Arctic Aerosol by Contemporary Lidar and Radiosonde Observations |
title_full_unstemmed |
Assessment of Hygroscopic Behavior of Arctic Aerosol by Contemporary Lidar and Radiosonde Observations |
title_sort |
assessment of hygroscopic behavior of arctic aerosol by contemporary lidar and radiosonde observations |
publisher |
MDPI AG |
publishDate |
2024 |
url |
https://doi.org/10.3390/rs16163087 https://doaj.org/article/81c61f98b62545409a8ffd271282146f |
geographic |
Arctic Ny-Ålesund Svalbard |
geographic_facet |
Arctic Ny-Ålesund Svalbard |
genre |
Arctic Ny Ålesund Ny-Ålesund Svalbard |
genre_facet |
Arctic Ny Ålesund Ny-Ålesund Svalbard |
op_source |
Remote Sensing, Vol 16, Iss 16, p 3087 (2024) |
op_relation |
https://www.mdpi.com/2072-4292/16/16/3087 https://doaj.org/toc/2072-4292 doi:10.3390/rs16163087 2072-4292 https://doaj.org/article/81c61f98b62545409a8ffd271282146f |
op_doi |
https://doi.org/10.3390/rs16163087 |
container_title |
Remote Sensing |
container_volume |
16 |
container_issue |
16 |
container_start_page |
3087 |
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1811635145636052992 |