Comparison between summertime and wintertime Arctic Ocean primary marine aerosol properties
Primary marine aerosols (PMAs) are an important source of cloud condensation nuclei, and one of the key elements of the remote marine radiative budget. Changes occurring in the rapidly warming Arctic, most importantly the decreasing sea ice extent, will alter PMA production and hence the Arctic clim...
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Uppsala universitet, Luft-, vatten- och landskapslära
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ftuppsalauniv:oai:DiVA.org:uu-203367 2023-05-15T14:48:44+02:00 Comparison between summertime and wintertime Arctic Ocean primary marine aerosol properties Zabori, J. Krejci, R. Strom, J. Vaattovaara, P. Ekman, A. M. L. Salter, M. E. Martensson, Monica Nilsson, E. D. 2013 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-203367 https://doi.org/10.5194/acp-13-4783-2013 eng eng Uppsala universitet, Luft-, vatten- och landskapslära Atmospheric Chemistry And Physics, 1680-7316, 2013, 13:9, s. 4783-4799 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-203367 doi:10.5194/acp-13-4783-2013 ISI:000318941300020 info:eu-repo/semantics/openAccess Natural Sciences Naturvetenskap Article in journal info:eu-repo/semantics/article text 2013 ftuppsalauniv https://doi.org/10.5194/acp-13-4783-2013 2023-02-23T21:52:07Z Primary marine aerosols (PMAs) are an important source of cloud condensation nuclei, and one of the key elements of the remote marine radiative budget. Changes occurring in the rapidly warming Arctic, most importantly the decreasing sea ice extent, will alter PMA production and hence the Arctic climate through a set of feedback processes. In light of this, laboratory experiments with Arctic Ocean water during both Arctic winter and summer were conducted and focused on PMA emissions as a function of season and water properties. Total particle number concentrations and particle number size distributions were used to characterize the PMA population. A comprehensive data set from the Arctic summer and winter showed a decrease in PMA concentrations for the covered water temperature (T-w) range between - 1 degrees C and 15 degrees C. A sharp decrease in PMA emissions for a T-w increase from -1 degrees C to 4 degrees C was followed by a lower rate of change in PMA emissions for T-w up to about 6 degrees C. Near constant number concentrations for water temperatures between 6 degrees C to 10 degrees C and higher were recorded. Even though the total particle number concentration changes for overlapping T-w ranges were consistent between the summer and winter measurements, the distribution of particle number concentrations among the different sizes varied between the seasons. Median particle number concentrations for a dry diameter (D-p) < 0.125 mu m measured during winter conditions were similar (deviation of up to 3 %), or lower (up to 70 %) than the ones measured during summer conditions (for the same water temperature range). For D-p > 0.125 mu m, the particle number concentrations during winter were mostly higher than in summer (up to 50 %). The normalized particle number size distribution as a function of water temperature was examined for both winter and summer measurements. An increase in T-w from -1 degrees C to 10 degrees C during winter measurements showed a decrease in the peak of relative particle number ... Article in Journal/Newspaper Arctic Arctic Ocean Sea ice Uppsala University: Publications (DiVA) Arctic Arctic Ocean Atmospheric Chemistry and Physics 13 9 4783 4799 |
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Uppsala University: Publications (DiVA) |
op_collection_id |
ftuppsalauniv |
language |
English |
topic |
Natural Sciences Naturvetenskap |
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Natural Sciences Naturvetenskap Zabori, J. Krejci, R. Strom, J. Vaattovaara, P. Ekman, A. M. L. Salter, M. E. Martensson, Monica Nilsson, E. D. Comparison between summertime and wintertime Arctic Ocean primary marine aerosol properties |
topic_facet |
Natural Sciences Naturvetenskap |
description |
Primary marine aerosols (PMAs) are an important source of cloud condensation nuclei, and one of the key elements of the remote marine radiative budget. Changes occurring in the rapidly warming Arctic, most importantly the decreasing sea ice extent, will alter PMA production and hence the Arctic climate through a set of feedback processes. In light of this, laboratory experiments with Arctic Ocean water during both Arctic winter and summer were conducted and focused on PMA emissions as a function of season and water properties. Total particle number concentrations and particle number size distributions were used to characterize the PMA population. A comprehensive data set from the Arctic summer and winter showed a decrease in PMA concentrations for the covered water temperature (T-w) range between - 1 degrees C and 15 degrees C. A sharp decrease in PMA emissions for a T-w increase from -1 degrees C to 4 degrees C was followed by a lower rate of change in PMA emissions for T-w up to about 6 degrees C. Near constant number concentrations for water temperatures between 6 degrees C to 10 degrees C and higher were recorded. Even though the total particle number concentration changes for overlapping T-w ranges were consistent between the summer and winter measurements, the distribution of particle number concentrations among the different sizes varied between the seasons. Median particle number concentrations for a dry diameter (D-p) < 0.125 mu m measured during winter conditions were similar (deviation of up to 3 %), or lower (up to 70 %) than the ones measured during summer conditions (for the same water temperature range). For D-p > 0.125 mu m, the particle number concentrations during winter were mostly higher than in summer (up to 50 %). The normalized particle number size distribution as a function of water temperature was examined for both winter and summer measurements. An increase in T-w from -1 degrees C to 10 degrees C during winter measurements showed a decrease in the peak of relative particle number ... |
format |
Article in Journal/Newspaper |
author |
Zabori, J. Krejci, R. Strom, J. Vaattovaara, P. Ekman, A. M. L. Salter, M. E. Martensson, Monica Nilsson, E. D. |
author_facet |
Zabori, J. Krejci, R. Strom, J. Vaattovaara, P. Ekman, A. M. L. Salter, M. E. Martensson, Monica Nilsson, E. D. |
author_sort |
Zabori, J. |
title |
Comparison between summertime and wintertime Arctic Ocean primary marine aerosol properties |
title_short |
Comparison between summertime and wintertime Arctic Ocean primary marine aerosol properties |
title_full |
Comparison between summertime and wintertime Arctic Ocean primary marine aerosol properties |
title_fullStr |
Comparison between summertime and wintertime Arctic Ocean primary marine aerosol properties |
title_full_unstemmed |
Comparison between summertime and wintertime Arctic Ocean primary marine aerosol properties |
title_sort |
comparison between summertime and wintertime arctic ocean primary marine aerosol properties |
publisher |
Uppsala universitet, Luft-, vatten- och landskapslära |
publishDate |
2013 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-203367 https://doi.org/10.5194/acp-13-4783-2013 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Ocean Sea ice |
op_relation |
Atmospheric Chemistry And Physics, 1680-7316, 2013, 13:9, s. 4783-4799 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-203367 doi:10.5194/acp-13-4783-2013 ISI:000318941300020 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-13-4783-2013 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
13 |
container_issue |
9 |
container_start_page |
4783 |
op_container_end_page |
4799 |
_version_ |
1766319813550931968 |