Size distribution and ionic composition of marine summer aerosol at the continental Antarctic site Kohnen
We measured aerosol size distributions and conducted bulk as well as size segregated aerosol sampling during two summer campaigns in January 2015 and January 2016 at the continental Antarctic station Kohnen (Dronning Maud Land). Physical and chemical aerosol properties differ conspicuously during th...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.882375 2023-05-15T13:44:47+02:00 Size distribution and ionic composition of marine summer aerosol at the continental Antarctic site Kohnen Weller, Rolf Legrand, Michel R Preunkert, Suzanne LATITUDE: -75.001660 * LONGITUDE: 0.067830 * DATE/TIME START: 2015-01-16T14:05:00 * DATE/TIME END: 2016-01-28T15:00:00 2017-11-01 application/zip, 10 datasets https://doi.pangaea.de/10.1594/PANGAEA.882375 https://doi.org/10.1594/PANGAEA.882375 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.882375 https://doi.org/10.1594/PANGAEA.882375 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Weller, Rolf; Legrand, Michel R; Preunkert, Suzanne (2018): Size distribution and ionic composition of marine summer aerosol at the continental Antarctic site Kohnen. Atmospheric Chemistry and Physics, 18, 2413-2430, https://doi.org/10.5194/acp-18-2413-2018 Atmospheric Chemistry @ AWI AWI_AC AWI_stations AWI Antarctic Land Expedition Dronning Maud Land Antarctica Kohnen Research station RS Dataset 2017 ftpangaea https://doi.org/10.1594/PANGAEA.882375 https://doi.org/10.5194/acp-18-2413-2018 2023-01-20T07:34:02Z We measured aerosol size distributions and conducted bulk as well as size segregated aerosol sampling during two summer campaigns in January 2015 and January 2016 at the continental Antarctic station Kohnen (Dronning Maud Land). Physical and chemical aerosol properties differ conspicuously during the episodic impact of an outstanding low pressure system in 2015 (LPS15) compared to the prevailing clear sky conditions (CSC): The about three days persisting LPS15, located in the eastern Weddell Sea, was associated with marine boundary layer (MBL) air mass intrusion, enhanced condensation particle concentrations (1400±700 cm-3 compared to 250±120 cm-3 during CSC; mean ± SD), occurrence of a new particle formation (NPF) event exhibiting a continuous growth of particle diameters (Dp) from 12 nm to 43 nm over 44 hours (growth rate 0.6 nm h-1), peaking methane sulfonate (MS-), non-sea salt sulfate (nss-SO42-) and Na+ concentrations (190 ng m-3 MS-, 137 ng m-3 nss-SO42-, and 53 ng m-3 Na+ compared to 24±15 ng m-3, 107±20 ng m-3 and 4.1±2.2 ng m-3, respectively, during CSC), and finally an increased MS-/nss-SO42- mass ratio ßMS of 0.4 up to 2.3 (0.21±0.1 during CSC) comparable to typical values found at coastal Antarctic sites. Throughout the observation period a larger part of MS- could be found in super micron aerosol compared to nss-SO42-, i.e. (10±2) % by mass compared to (3.2±2) %, respectively. On the whole, during CSC aged aerosol characterized by an usually mono-modal size distribution around Dp = 60 nm was observed. Although our observations indicate that sporadic impacts of coastal cyclones were associated with enhanced marine aerosol entry, at large aerosol deposition on-site during austral summer should be dominated by the typical steady CSC. Dataset Antarc* Antarctic Antarctica Dronning Maud Land Weddell Sea PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Weddell Sea Austral Dronning Maud Land Weddell Kohnen ENVELOPE(0.000,0.000,-75.000,-75.000) ENVELOPE(0.067830,0.067830,-75.001660,-75.001660) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Atmospheric Chemistry @ AWI AWI_AC AWI_stations AWI Antarctic Land Expedition Dronning Maud Land Antarctica Kohnen Research station RS |
spellingShingle |
Atmospheric Chemistry @ AWI AWI_AC AWI_stations AWI Antarctic Land Expedition Dronning Maud Land Antarctica Kohnen Research station RS Weller, Rolf Legrand, Michel R Preunkert, Suzanne Size distribution and ionic composition of marine summer aerosol at the continental Antarctic site Kohnen |
topic_facet |
Atmospheric Chemistry @ AWI AWI_AC AWI_stations AWI Antarctic Land Expedition Dronning Maud Land Antarctica Kohnen Research station RS |
description |
We measured aerosol size distributions and conducted bulk as well as size segregated aerosol sampling during two summer campaigns in January 2015 and January 2016 at the continental Antarctic station Kohnen (Dronning Maud Land). Physical and chemical aerosol properties differ conspicuously during the episodic impact of an outstanding low pressure system in 2015 (LPS15) compared to the prevailing clear sky conditions (CSC): The about three days persisting LPS15, located in the eastern Weddell Sea, was associated with marine boundary layer (MBL) air mass intrusion, enhanced condensation particle concentrations (1400±700 cm-3 compared to 250±120 cm-3 during CSC; mean ± SD), occurrence of a new particle formation (NPF) event exhibiting a continuous growth of particle diameters (Dp) from 12 nm to 43 nm over 44 hours (growth rate 0.6 nm h-1), peaking methane sulfonate (MS-), non-sea salt sulfate (nss-SO42-) and Na+ concentrations (190 ng m-3 MS-, 137 ng m-3 nss-SO42-, and 53 ng m-3 Na+ compared to 24±15 ng m-3, 107±20 ng m-3 and 4.1±2.2 ng m-3, respectively, during CSC), and finally an increased MS-/nss-SO42- mass ratio ßMS of 0.4 up to 2.3 (0.21±0.1 during CSC) comparable to typical values found at coastal Antarctic sites. Throughout the observation period a larger part of MS- could be found in super micron aerosol compared to nss-SO42-, i.e. (10±2) % by mass compared to (3.2±2) %, respectively. On the whole, during CSC aged aerosol characterized by an usually mono-modal size distribution around Dp = 60 nm was observed. Although our observations indicate that sporadic impacts of coastal cyclones were associated with enhanced marine aerosol entry, at large aerosol deposition on-site during austral summer should be dominated by the typical steady CSC. |
format |
Dataset |
author |
Weller, Rolf Legrand, Michel R Preunkert, Suzanne |
author_facet |
Weller, Rolf Legrand, Michel R Preunkert, Suzanne |
author_sort |
Weller, Rolf |
title |
Size distribution and ionic composition of marine summer aerosol at the continental Antarctic site Kohnen |
title_short |
Size distribution and ionic composition of marine summer aerosol at the continental Antarctic site Kohnen |
title_full |
Size distribution and ionic composition of marine summer aerosol at the continental Antarctic site Kohnen |
title_fullStr |
Size distribution and ionic composition of marine summer aerosol at the continental Antarctic site Kohnen |
title_full_unstemmed |
Size distribution and ionic composition of marine summer aerosol at the continental Antarctic site Kohnen |
title_sort |
size distribution and ionic composition of marine summer aerosol at the continental antarctic site kohnen |
publisher |
PANGAEA |
publishDate |
2017 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.882375 https://doi.org/10.1594/PANGAEA.882375 |
op_coverage |
LATITUDE: -75.001660 * LONGITUDE: 0.067830 * DATE/TIME START: 2015-01-16T14:05:00 * DATE/TIME END: 2016-01-28T15:00:00 |
long_lat |
ENVELOPE(0.000,0.000,-75.000,-75.000) ENVELOPE(0.067830,0.067830,-75.001660,-75.001660) |
geographic |
Antarctic Weddell Sea Austral Dronning Maud Land Weddell Kohnen |
geographic_facet |
Antarctic Weddell Sea Austral Dronning Maud Land Weddell Kohnen |
genre |
Antarc* Antarctic Antarctica Dronning Maud Land Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica Dronning Maud Land Weddell Sea |
op_source |
Supplement to: Weller, Rolf; Legrand, Michel R; Preunkert, Suzanne (2018): Size distribution and ionic composition of marine summer aerosol at the continental Antarctic site Kohnen. Atmospheric Chemistry and Physics, 18, 2413-2430, https://doi.org/10.5194/acp-18-2413-2018 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.882375 https://doi.org/10.1594/PANGAEA.882375 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.882375 https://doi.org/10.5194/acp-18-2413-2018 |
_version_ |
1766206601069330432 |