Antarctic haze phenomena at Syowa Station, Antarctica: seasonal features and impacts on atmospheric chemistry
Abstract Despite the cleanest conditions, haze phenomena were observed at Syowa Station, Antarctica. During our measurements period of 1997–2022, 113 haze events were identified. General characteristics of Antarctic haze such as duration and horizontal scale were obtained from haze event analyses. A...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-08-01
|
| Series: | npj Climate and Atmospheric Science |
| Online Access: | https://doi.org/10.1038/s41612-025-01176-9 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849333454813003776 |
|---|---|
| author | Keiichiro Hara Kano Osato Masanori Yabuki Kazuo Osada Naohiko Hirasawa Masataka Shiobara Takashi Yamanouchi |
| author_facet | Keiichiro Hara Kano Osato Masanori Yabuki Kazuo Osada Naohiko Hirasawa Masataka Shiobara Takashi Yamanouchi |
| author_sort | Keiichiro Hara |
| collection | DOAJ |
| description | Abstract Despite the cleanest conditions, haze phenomena were observed at Syowa Station, Antarctica. During our measurements period of 1997–2022, 113 haze events were identified. General characteristics of Antarctic haze such as duration and horizontal scale were obtained from haze event analyses. Antarctic haze near the surface was identified mostly during May–October. Seasonal features of the Antarctic haze appearance were that they were maximal in August and were associated with strong wind conditions and sea-ice extent. Aerosol enhanced layers (AELs) appeared in the surface – free troposphere (ca. 4 km). AELs were identified also in mid-April – October. Furthermore, surface ozone (O3) was depleted during the Antarctic haze. The O3 depletion amount was maximal during August and minimal during polar night (June). Findings suggest that Antarctic haze phenomena make important contributions to atmospheric oxidative capacity and cloud processes in the Antarctic troposphere. |
| format | Article |
| id | doaj-art-b8aef5a15b1a46288cf26ce5361b28f0 |
| institution | Kabale University |
| issn | 2397-3722 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Climate and Atmospheric Science |
| spelling | doaj-art-b8aef5a15b1a46288cf26ce5361b28f02025-08-20T03:45:51ZengNature Portfolionpj Climate and Atmospheric Science2397-37222025-08-018111110.1038/s41612-025-01176-9Antarctic haze phenomena at Syowa Station, Antarctica: seasonal features and impacts on atmospheric chemistryKeiichiro Hara0Kano Osato1Masanori Yabuki2Kazuo Osada3Naohiko Hirasawa4Masataka Shiobara5Takashi Yamanouchi6Department of Earth System Science, Faculty of Science, Fukuoka UniversityDepartment of Earth System Science, Faculty of Science, Fukuoka UniversityResearch Institute for Sustainable Humanosphere, Kyoto UniversityGraduate School of Environmental Studies, Nagoya UniversityNational Institute of Polar ResearchNational Institute of Polar ResearchNational Institute of Polar ResearchAbstract Despite the cleanest conditions, haze phenomena were observed at Syowa Station, Antarctica. During our measurements period of 1997–2022, 113 haze events were identified. General characteristics of Antarctic haze such as duration and horizontal scale were obtained from haze event analyses. Antarctic haze near the surface was identified mostly during May–October. Seasonal features of the Antarctic haze appearance were that they were maximal in August and were associated with strong wind conditions and sea-ice extent. Aerosol enhanced layers (AELs) appeared in the surface – free troposphere (ca. 4 km). AELs were identified also in mid-April – October. Furthermore, surface ozone (O3) was depleted during the Antarctic haze. The O3 depletion amount was maximal during August and minimal during polar night (June). Findings suggest that Antarctic haze phenomena make important contributions to atmospheric oxidative capacity and cloud processes in the Antarctic troposphere.https://doi.org/10.1038/s41612-025-01176-9 |
| spellingShingle | Keiichiro Hara Kano Osato Masanori Yabuki Kazuo Osada Naohiko Hirasawa Masataka Shiobara Takashi Yamanouchi Antarctic haze phenomena at Syowa Station, Antarctica: seasonal features and impacts on atmospheric chemistry npj Climate and Atmospheric Science |
| title | Antarctic haze phenomena at Syowa Station, Antarctica: seasonal features and impacts on atmospheric chemistry |
| title_full | Antarctic haze phenomena at Syowa Station, Antarctica: seasonal features and impacts on atmospheric chemistry |
| title_fullStr | Antarctic haze phenomena at Syowa Station, Antarctica: seasonal features and impacts on atmospheric chemistry |
| title_full_unstemmed | Antarctic haze phenomena at Syowa Station, Antarctica: seasonal features and impacts on atmospheric chemistry |
| title_short | Antarctic haze phenomena at Syowa Station, Antarctica: seasonal features and impacts on atmospheric chemistry |
| title_sort | antarctic haze phenomena at syowa station antarctica seasonal features and impacts on atmospheric chemistry |
| url | https://doi.org/10.1038/s41612-025-01176-9 |
| work_keys_str_mv | AT keiichirohara antarctichazephenomenaatsyowastationantarcticaseasonalfeaturesandimpactsonatmosphericchemistry AT kanoosato antarctichazephenomenaatsyowastationantarcticaseasonalfeaturesandimpactsonatmosphericchemistry AT masanoriyabuki antarctichazephenomenaatsyowastationantarcticaseasonalfeaturesandimpactsonatmosphericchemistry AT kazuoosada antarctichazephenomenaatsyowastationantarcticaseasonalfeaturesandimpactsonatmosphericchemistry AT naohikohirasawa antarctichazephenomenaatsyowastationantarcticaseasonalfeaturesandimpactsonatmosphericchemistry AT masatakashiobara antarctichazephenomenaatsyowastationantarcticaseasonalfeaturesandimpactsonatmosphericchemistry AT takashiyamanouchi antarctichazephenomenaatsyowastationantarcticaseasonalfeaturesandimpactsonatmosphericchemistry |