Wildfire smoke, Arctic haze, and aerosol effects on mixed-phase and cirrus clouds over the North Pole region during MOSAiC: an introduction
An advanced multiwavelength polarization Raman lidar was operated aboard the icebreaker Polarstern during the MOSAiC (Multidisciplinary drifting Observatory for the Study of Arctic Climate) expedition to continuously monitor aerosol and cloud layers in the central Arctic up to 30 km height. The expe...
Published in: | Atmospheric Chemistry and Physics |
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COPERNICUS GESELLSCHAFT MBH
2021
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Online Access: | https://epic.awi.de/id/eprint/54570/ https://epic.awi.de/id/eprint/54570/1/acp-21-13397-2021.pdf https://acp.copernicus.org/articles/21/13397/2021/ https://hdl.handle.net/10013/epic.d2b431b3-ae0d-4e8c-a526-5d828ee313ea https://hdl.handle.net/ |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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description |
An advanced multiwavelength polarization Raman lidar was operated aboard the icebreaker Polarstern during the MOSAiC (Multidisciplinary drifting Observatory for the Study of Arctic Climate) expedition to continuously monitor aerosol and cloud layers in the central Arctic up to 30 km height. The expedition lasted from September 2019 to October 2020 and measurements were mostly taken between 85 and 88.5∘ N. The lidar was integrated into a complex remote-sensing infrastructure aboard the Polarstern. In this article, novel lidar techniques, innovative concepts to study aerosol–cloud interaction in the Arctic, and unique MOSAiC findings will be presented. The highlight of the lidar measurements was the detection of a 10 km deep wildfire smoke layer over the North Pole region between 7–8 km and 17–18 km height with an aerosol optical thickness (AOT) at 532 nm of around 0.1 (in October–November 2019) and 0.05 from December to March. The dual-wavelength Raman lidar technique allowed us to unambiguously identify smoke as the dominating aerosol type in the aerosol layer in the upper troposphere and lower stratosphere (UTLS). An additional contribution to the 532 nm AOT by volcanic sulfate aerosol (Raikoke eruption) was estimated to always be lower than 15 %. The optical and microphysical properties of the UTLS smoke layer are presented in an accompanying paper (Ohneiser et al., 2021). This smoke event offered the unique opportunity to study the influence of organic aerosol particles (serving as ice-nucleating particles, INPs) on cirrus formation in the upper troposphere. An example of a closure study is presented to explain our concept of investigating aerosol–cloud interaction in this field. The smoke particles were obviously able to control the evolution of the cirrus system and caused low ice crystal number concentration. After the discussion of two typical Arctic haze events, we present a case study of the evolution of a long-lasting mixed-phase cloud layer embedded in Arctic haze in the free troposphere. The recently introduced dual-field-of-view polarization lidar technique was applied, for the first time, to mixed-phase cloud observations in order to determine the microphysical properties of the water droplets. The mixed-phase cloud closure experiment (based on combined lidar and radar observations) indicated that the observed aerosol levels controlled the number concentrations of nucleated droplets and ice crystals. |
format |
Article in Journal/Newspaper |
author |
Engelmann, Ronny Ansmann, Albert Ohneiser, Kevin Griesche, Hannes Radenz, Martin Julian, Hofer Althausen, Dietrich Dahlke, Sandro Maturilli, Marion Veselovskii, Igor Jimenez, Cristofer Wiesen, Robert Baars, Holger Bühl, Johannes Gebauer, Henriette Haarig, Moritz Seifert, Patric Wandinger, Ulla Mackensen, Andreas |
spellingShingle |
Engelmann, Ronny Ansmann, Albert Ohneiser, Kevin Griesche, Hannes Radenz, Martin Julian, Hofer Althausen, Dietrich Dahlke, Sandro Maturilli, Marion Veselovskii, Igor Jimenez, Cristofer Wiesen, Robert Baars, Holger Bühl, Johannes Gebauer, Henriette Haarig, Moritz Seifert, Patric Wandinger, Ulla Mackensen, Andreas Wildfire smoke, Arctic haze, and aerosol effects on mixed-phase and cirrus clouds over the North Pole region during MOSAiC: an introduction |
author_facet |
Engelmann, Ronny Ansmann, Albert Ohneiser, Kevin Griesche, Hannes Radenz, Martin Julian, Hofer Althausen, Dietrich Dahlke, Sandro Maturilli, Marion Veselovskii, Igor Jimenez, Cristofer Wiesen, Robert Baars, Holger Bühl, Johannes Gebauer, Henriette Haarig, Moritz Seifert, Patric Wandinger, Ulla Mackensen, Andreas |
author_sort |
Engelmann, Ronny |
title |
Wildfire smoke, Arctic haze, and aerosol effects on mixed-phase and cirrus clouds over the North Pole region during MOSAiC: an introduction |
title_short |
Wildfire smoke, Arctic haze, and aerosol effects on mixed-phase and cirrus clouds over the North Pole region during MOSAiC: an introduction |
title_full |
Wildfire smoke, Arctic haze, and aerosol effects on mixed-phase and cirrus clouds over the North Pole region during MOSAiC: an introduction |
title_fullStr |
Wildfire smoke, Arctic haze, and aerosol effects on mixed-phase and cirrus clouds over the North Pole region during MOSAiC: an introduction |
title_full_unstemmed |
Wildfire smoke, Arctic haze, and aerosol effects on mixed-phase and cirrus clouds over the North Pole region during MOSAiC: an introduction |
title_sort |
wildfire smoke, arctic haze, and aerosol effects on mixed-phase and cirrus clouds over the north pole region during mosaic: an introduction |
publisher |
COPERNICUS GESELLSCHAFT MBH |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/54570/ https://epic.awi.de/id/eprint/54570/1/acp-21-13397-2021.pdf https://acp.copernicus.org/articles/21/13397/2021/ https://hdl.handle.net/10013/epic.d2b431b3-ae0d-4e8c-a526-5d828ee313ea https://hdl.handle.net/ |
geographic |
Arctic North Pole |
geographic_facet |
Arctic North Pole |
genre |
Arctic Arctic North Pole |
genre_facet |
Arctic Arctic North Pole |
op_source |
EPIC3Atmospheric Chemistry and Physics, COPERNICUS GESELLSCHAFT MBH, 21, pp. 13397-13423, ISSN: 1680-7316 |
op_relation |
https://epic.awi.de/id/eprint/54570/1/acp-21-13397-2021.pdf https://hdl.handle.net/ Engelmann, R. , Ansmann, A. , Ohneiser, K. , Griesche, H. , Radenz, M. , Julian, H. , Althausen, D. , Dahlke, S. orcid:0000-0002-0395-9597 , Maturilli, M. orcid:0000-0001-6818-7383 , Veselovskii, I. , Jimenez, C. , Wiesen, R. , Baars, H. , Bühl, J. , Gebauer, H. , Haarig, M. , Seifert, P. , Wandinger, U. and Mackensen, A. orcid:0000-0002-5024-4455 (2021) Wildfire smoke, Arctic haze, and aerosol effects on mixed-phase and cirrus clouds over the North Pole region during MOSAiC: an introduction , Atmospheric Chemistry and Physics, 21 , pp. 13397-13423 . doi:10.5194/acp-21-13397-2021 <https://doi.org/10.5194/acp-21-13397-2021> , hdl:10013/epic.d2b431b3-ae0d-4e8c-a526-5d828ee313ea |
op_doi |
https://doi.org/10.5194/acp-21-13397-2021 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
21 |
container_issue |
17 |
container_start_page |
13397 |
op_container_end_page |
13423 |
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ftawi:oai:epic.awi.de:54570 2023-05-15T14:28:06+02:00 Wildfire smoke, Arctic haze, and aerosol effects on mixed-phase and cirrus clouds over the North Pole region during MOSAiC: an introduction Engelmann, Ronny Ansmann, Albert Ohneiser, Kevin Griesche, Hannes Radenz, Martin Julian, Hofer Althausen, Dietrich Dahlke, Sandro Maturilli, Marion Veselovskii, Igor Jimenez, Cristofer Wiesen, Robert Baars, Holger Bühl, Johannes Gebauer, Henriette Haarig, Moritz Seifert, Patric Wandinger, Ulla Mackensen, Andreas 2021-09-09 application/pdf https://epic.awi.de/id/eprint/54570/ https://epic.awi.de/id/eprint/54570/1/acp-21-13397-2021.pdf https://acp.copernicus.org/articles/21/13397/2021/ https://hdl.handle.net/10013/epic.d2b431b3-ae0d-4e8c-a526-5d828ee313ea https://hdl.handle.net/ unknown COPERNICUS GESELLSCHAFT MBH https://epic.awi.de/id/eprint/54570/1/acp-21-13397-2021.pdf https://hdl.handle.net/ Engelmann, R. , Ansmann, A. , Ohneiser, K. , Griesche, H. , Radenz, M. , Julian, H. , Althausen, D. , Dahlke, S. orcid:0000-0002-0395-9597 , Maturilli, M. orcid:0000-0001-6818-7383 , Veselovskii, I. , Jimenez, C. , Wiesen, R. , Baars, H. , Bühl, J. , Gebauer, H. , Haarig, M. , Seifert, P. , Wandinger, U. and Mackensen, A. orcid:0000-0002-5024-4455 (2021) Wildfire smoke, Arctic haze, and aerosol effects on mixed-phase and cirrus clouds over the North Pole region during MOSAiC: an introduction , Atmospheric Chemistry and Physics, 21 , pp. 13397-13423 . doi:10.5194/acp-21-13397-2021 <https://doi.org/10.5194/acp-21-13397-2021> , hdl:10013/epic.d2b431b3-ae0d-4e8c-a526-5d828ee313ea EPIC3Atmospheric Chemistry and Physics, COPERNICUS GESELLSCHAFT MBH, 21, pp. 13397-13423, ISSN: 1680-7316 Article isiRev 2021 ftawi https://doi.org/10.5194/acp-21-13397-2021 2021-12-24T15:46:30Z An advanced multiwavelength polarization Raman lidar was operated aboard the icebreaker Polarstern during the MOSAiC (Multidisciplinary drifting Observatory for the Study of Arctic Climate) expedition to continuously monitor aerosol and cloud layers in the central Arctic up to 30 km height. The expedition lasted from September 2019 to October 2020 and measurements were mostly taken between 85 and 88.5∘ N. The lidar was integrated into a complex remote-sensing infrastructure aboard the Polarstern. In this article, novel lidar techniques, innovative concepts to study aerosol–cloud interaction in the Arctic, and unique MOSAiC findings will be presented. The highlight of the lidar measurements was the detection of a 10 km deep wildfire smoke layer over the North Pole region between 7–8 km and 17–18 km height with an aerosol optical thickness (AOT) at 532 nm of around 0.1 (in October–November 2019) and 0.05 from December to March. The dual-wavelength Raman lidar technique allowed us to unambiguously identify smoke as the dominating aerosol type in the aerosol layer in the upper troposphere and lower stratosphere (UTLS). An additional contribution to the 532 nm AOT by volcanic sulfate aerosol (Raikoke eruption) was estimated to always be lower than 15 %. The optical and microphysical properties of the UTLS smoke layer are presented in an accompanying paper (Ohneiser et al., 2021). This smoke event offered the unique opportunity to study the influence of organic aerosol particles (serving as ice-nucleating particles, INPs) on cirrus formation in the upper troposphere. An example of a closure study is presented to explain our concept of investigating aerosol–cloud interaction in this field. The smoke particles were obviously able to control the evolution of the cirrus system and caused low ice crystal number concentration. After the discussion of two typical Arctic haze events, we present a case study of the evolution of a long-lasting mixed-phase cloud layer embedded in Arctic haze in the free troposphere. The recently introduced dual-field-of-view polarization lidar technique was applied, for the first time, to mixed-phase cloud observations in order to determine the microphysical properties of the water droplets. The mixed-phase cloud closure experiment (based on combined lidar and radar observations) indicated that the observed aerosol levels controlled the number concentrations of nucleated droplets and ice crystals. Article in Journal/Newspaper Arctic Arctic North Pole Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic North Pole Atmospheric Chemistry and Physics 21 17 13397 13423 |