Aerosol processes in polar regions : from formation to climatic implications
Atmospheric aerosols affect our health, air quality, visibility and climate. They can impact the climate trough their ability to interact with radiation and to alter cloud properties by acting as cloud condensation nuclei (CCN) or ice nuclei (IN). Globally, aerosols cool the climate, but locally the...
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/45329 2023-11-12T04:08:01+01:00 Aerosol processes in polar regions : from formation to climatic implications Aerosoliprosessit polaarialueilla : synnystä ilmastollisiin vaikutuksiin Kyrö, Ella-Maria Skov, Henrik University of Helsinki, Faculty of Science, Department of Physics, Division of Atmospheric Sciences Helsingin yliopisto, matemaattis-luonnontieteellinen tiedekunta, fysiikan laitos Helsingfors universitet, matematisk-naturvetenskapliga fakulteten, institutionen för fysik Kulmala, Markku Kerminen, Veli-Matti Virkkula, Aki 2014-05-20T08:07:32Z application/pdf http://hdl.handle.net/10138/45329 eng eng Helsingin yliopisto Helsingfors universitet University of Helsinki URN:ISBN:978-952-5822-96-0 Helsinki: Unigrafia Oy, 2014, Report series in aersol science http://hdl.handle.net/10138/45329 URN:ISBN:978-952-5822-97-7 Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty. This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited. Publikationen är skyddad av upphovsrätten. Den får läsas och skrivas ut för personligt bruk. Användning i kommersiellt syfte är förbjuden. meteorologia Text Doctoral dissertation (article-based) Artikkeliväitöskirja Artikelavhandling doctoralThesis 2014 ftunivhelsihelda 2023-10-18T23:01:04Z Atmospheric aerosols affect our health, air quality, visibility and climate. They can impact the climate trough their ability to interact with radiation and to alter cloud properties by acting as cloud condensation nuclei (CCN) or ice nuclei (IN). Globally, aerosols cool the climate, but locally their effect may be opposite. Their climatic effects are determined by their concentration, size distribution and chemical composition as well as their vertical and spatial distribution and the underlying surface type. Currently, the largest uncertainties in estimating our future climate are related to atmospheric aerosols and their intearctions with climate. Polar regions are experiencing faster warming than the Earth on average. This enhanced warming leads to many dramatic changes in the cryosphere, including rapid shrinkage of Arctic summer sea ice. Arctic ampli cation also decreases the temperature gradient between the Arctic and polar air masses. Both of these changes feed back to the atmospheric dynamics and thus the transport of pollutants into the Arctic. The rapid climate change alters also the sources - both natural and anthropogenic - and sinks of secondary aerosols in polar regions. Therefore, it is crucial to understand the formation and growth mechanisms of atmospheric aerosols in these areas in order to assess their climatic effects. High latitudes also offer a great natural laboratory to study the aerosol dynamics and timescales for reaching climatically relevant sizes or obtaining a balance between sources and sinks, with very little anthropogenic influence. Moreover, as the precipitation amount and patterns will change in the future, the removal of aerosols is also subject to change. Quantifying this requires parameterization for climate models. This thesis adds to the understanding of all of these aforementioned parts in the aerosol processes and their climatic effects in polar regions. It offers the fi rst observations of Antarctic new particle formation (NPF) from continental biogenic precursors and ... Doctoral or Postdoctoral Thesis Antarc* Antarctic Arctic Climate change Sea ice HELDA – University of Helsinki Open Repository Arctic Antarctic |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
meteorologia |
spellingShingle |
meteorologia Kyrö, Ella-Maria Aerosol processes in polar regions : from formation to climatic implications |
topic_facet |
meteorologia |
description |
Atmospheric aerosols affect our health, air quality, visibility and climate. They can impact the climate trough their ability to interact with radiation and to alter cloud properties by acting as cloud condensation nuclei (CCN) or ice nuclei (IN). Globally, aerosols cool the climate, but locally their effect may be opposite. Their climatic effects are determined by their concentration, size distribution and chemical composition as well as their vertical and spatial distribution and the underlying surface type. Currently, the largest uncertainties in estimating our future climate are related to atmospheric aerosols and their intearctions with climate. Polar regions are experiencing faster warming than the Earth on average. This enhanced warming leads to many dramatic changes in the cryosphere, including rapid shrinkage of Arctic summer sea ice. Arctic ampli cation also decreases the temperature gradient between the Arctic and polar air masses. Both of these changes feed back to the atmospheric dynamics and thus the transport of pollutants into the Arctic. The rapid climate change alters also the sources - both natural and anthropogenic - and sinks of secondary aerosols in polar regions. Therefore, it is crucial to understand the formation and growth mechanisms of atmospheric aerosols in these areas in order to assess their climatic effects. High latitudes also offer a great natural laboratory to study the aerosol dynamics and timescales for reaching climatically relevant sizes or obtaining a balance between sources and sinks, with very little anthropogenic influence. Moreover, as the precipitation amount and patterns will change in the future, the removal of aerosols is also subject to change. Quantifying this requires parameterization for climate models. This thesis adds to the understanding of all of these aforementioned parts in the aerosol processes and their climatic effects in polar regions. It offers the fi rst observations of Antarctic new particle formation (NPF) from continental biogenic precursors and ... |
author2 |
Skov, Henrik University of Helsinki, Faculty of Science, Department of Physics, Division of Atmospheric Sciences Helsingin yliopisto, matemaattis-luonnontieteellinen tiedekunta, fysiikan laitos Helsingfors universitet, matematisk-naturvetenskapliga fakulteten, institutionen för fysik Kulmala, Markku Kerminen, Veli-Matti Virkkula, Aki |
format |
Doctoral or Postdoctoral Thesis |
author |
Kyrö, Ella-Maria |
author_facet |
Kyrö, Ella-Maria |
author_sort |
Kyrö, Ella-Maria |
title |
Aerosol processes in polar regions : from formation to climatic implications |
title_short |
Aerosol processes in polar regions : from formation to climatic implications |
title_full |
Aerosol processes in polar regions : from formation to climatic implications |
title_fullStr |
Aerosol processes in polar regions : from formation to climatic implications |
title_full_unstemmed |
Aerosol processes in polar regions : from formation to climatic implications |
title_sort |
aerosol processes in polar regions : from formation to climatic implications |
publisher |
Helsingin yliopisto |
publishDate |
2014 |
url |
http://hdl.handle.net/10138/45329 |
geographic |
Arctic Antarctic |
geographic_facet |
Arctic Antarctic |
genre |
Antarc* Antarctic Arctic Climate change Sea ice |
genre_facet |
Antarc* Antarctic Arctic Climate change Sea ice |
op_relation |
URN:ISBN:978-952-5822-96-0 Helsinki: Unigrafia Oy, 2014, Report series in aersol science http://hdl.handle.net/10138/45329 URN:ISBN:978-952-5822-97-7 |
op_rights |
Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty. This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited. Publikationen är skyddad av upphovsrätten. Den får läsas och skrivas ut för personligt bruk. Användning i kommersiellt syfte är förbjuden. |
_version_ |
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