Southern Hemisphere mid- and high-latitudinal AOD, CO, NO2, and HCHO: spatiotemporal patterns revealed by satellite observations
Abstract To assess air pollution emitted in Southern Hemisphere mid-latitudes and transported to Antarctica, we investigate the climatological mean and temporal trends in aerosol optical depth (AOD), carbon monoxide (CO), nitrogen dioxide (NO2), and formaldehyde (HCHO) columns using satellite observ...
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ftdoajarticles:oai:doaj.org/article:e693a7dfe6e64f8e82dc30e7bef495c9 2023-05-15T13:42:24+02:00 Southern Hemisphere mid- and high-latitudinal AOD, CO, NO2, and HCHO: spatiotemporal patterns revealed by satellite observations Dha Hyun Ahn Taejin Choi Jhoon Kim Sang Seo Park Yun Gon Lee Seong-Joong Kim Ja-Ho Koo 2019-04-01T00:00:00Z https://doi.org/10.1186/s40645-019-0277-y https://doaj.org/article/e693a7dfe6e64f8e82dc30e7bef495c9 EN eng SpringerOpen http://link.springer.com/article/10.1186/s40645-019-0277-y https://doaj.org/toc/2197-4284 doi:10.1186/s40645-019-0277-y 2197-4284 https://doaj.org/article/e693a7dfe6e64f8e82dc30e7bef495c9 Progress in Earth and Planetary Science, Vol 6, Iss 1, Pp 1-16 (2019) Climatology Aerosol optical depth Carbon monoxide Nitrogen dioxide Formaldehyde Southern Hemisphere Geography. Anthropology. Recreation G Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.1186/s40645-019-0277-y 2022-12-31T08:43:35Z Abstract To assess air pollution emitted in Southern Hemisphere mid-latitudes and transported to Antarctica, we investigate the climatological mean and temporal trends in aerosol optical depth (AOD), carbon monoxide (CO), nitrogen dioxide (NO2), and formaldehyde (HCHO) columns using satellite observations. Generally, all these measurements exhibit sharp peaks over and near the three nearby inhabited continents: South America, Africa, and Australia. This pattern indicates the large emission effect of anthropogenic activities and biomass burning processes. High AOD is also found over the Southern Atlantic Ocean, probably because of the sea salt production driven by strong winds. Since the pristine Antarctic atmosphere can be polluted by transport of air pollutants from the mid-latitudes, we analyze the 10-day back trajectories that arrive at Antarctic ground stations in consideration of the spatial distribution of mid-latitudinal AOD, CO, NO2, and HCHO. We find that the influence of mid-latitudinal emission differs across Antarctic regions: western Antarctic regions show relatively more back trajectories from the mid-latitudes, while the eastern Antarctic regions do not show large intrusions of mid-latitudinal air masses. Finally, we estimate the long-term trends in AOD, CO, NO2, and HCHO during the past decade (2005–2016). While CO shows a significant negative trend, the others show overall positive trends. Seasonal and regional differences in trends are also discussed. Article in Journal/Newspaper Antarc* Antarctic Antarctica Directory of Open Access Journals: DOAJ Articles Antarctic Progress in Earth and Planetary Science 6 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Climatology Aerosol optical depth Carbon monoxide Nitrogen dioxide Formaldehyde Southern Hemisphere Geography. Anthropology. Recreation G Geology QE1-996.5 |
spellingShingle |
Climatology Aerosol optical depth Carbon monoxide Nitrogen dioxide Formaldehyde Southern Hemisphere Geography. Anthropology. Recreation G Geology QE1-996.5 Dha Hyun Ahn Taejin Choi Jhoon Kim Sang Seo Park Yun Gon Lee Seong-Joong Kim Ja-Ho Koo Southern Hemisphere mid- and high-latitudinal AOD, CO, NO2, and HCHO: spatiotemporal patterns revealed by satellite observations |
topic_facet |
Climatology Aerosol optical depth Carbon monoxide Nitrogen dioxide Formaldehyde Southern Hemisphere Geography. Anthropology. Recreation G Geology QE1-996.5 |
description |
Abstract To assess air pollution emitted in Southern Hemisphere mid-latitudes and transported to Antarctica, we investigate the climatological mean and temporal trends in aerosol optical depth (AOD), carbon monoxide (CO), nitrogen dioxide (NO2), and formaldehyde (HCHO) columns using satellite observations. Generally, all these measurements exhibit sharp peaks over and near the three nearby inhabited continents: South America, Africa, and Australia. This pattern indicates the large emission effect of anthropogenic activities and biomass burning processes. High AOD is also found over the Southern Atlantic Ocean, probably because of the sea salt production driven by strong winds. Since the pristine Antarctic atmosphere can be polluted by transport of air pollutants from the mid-latitudes, we analyze the 10-day back trajectories that arrive at Antarctic ground stations in consideration of the spatial distribution of mid-latitudinal AOD, CO, NO2, and HCHO. We find that the influence of mid-latitudinal emission differs across Antarctic regions: western Antarctic regions show relatively more back trajectories from the mid-latitudes, while the eastern Antarctic regions do not show large intrusions of mid-latitudinal air masses. Finally, we estimate the long-term trends in AOD, CO, NO2, and HCHO during the past decade (2005–2016). While CO shows a significant negative trend, the others show overall positive trends. Seasonal and regional differences in trends are also discussed. |
format |
Article in Journal/Newspaper |
author |
Dha Hyun Ahn Taejin Choi Jhoon Kim Sang Seo Park Yun Gon Lee Seong-Joong Kim Ja-Ho Koo |
author_facet |
Dha Hyun Ahn Taejin Choi Jhoon Kim Sang Seo Park Yun Gon Lee Seong-Joong Kim Ja-Ho Koo |
author_sort |
Dha Hyun Ahn |
title |
Southern Hemisphere mid- and high-latitudinal AOD, CO, NO2, and HCHO: spatiotemporal patterns revealed by satellite observations |
title_short |
Southern Hemisphere mid- and high-latitudinal AOD, CO, NO2, and HCHO: spatiotemporal patterns revealed by satellite observations |
title_full |
Southern Hemisphere mid- and high-latitudinal AOD, CO, NO2, and HCHO: spatiotemporal patterns revealed by satellite observations |
title_fullStr |
Southern Hemisphere mid- and high-latitudinal AOD, CO, NO2, and HCHO: spatiotemporal patterns revealed by satellite observations |
title_full_unstemmed |
Southern Hemisphere mid- and high-latitudinal AOD, CO, NO2, and HCHO: spatiotemporal patterns revealed by satellite observations |
title_sort |
southern hemisphere mid- and high-latitudinal aod, co, no2, and hcho: spatiotemporal patterns revealed by satellite observations |
publisher |
SpringerOpen |
publishDate |
2019 |
url |
https://doi.org/10.1186/s40645-019-0277-y https://doaj.org/article/e693a7dfe6e64f8e82dc30e7bef495c9 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Progress in Earth and Planetary Science, Vol 6, Iss 1, Pp 1-16 (2019) |
op_relation |
http://link.springer.com/article/10.1186/s40645-019-0277-y https://doaj.org/toc/2197-4284 doi:10.1186/s40645-019-0277-y 2197-4284 https://doaj.org/article/e693a7dfe6e64f8e82dc30e7bef495c9 |
op_doi |
https://doi.org/10.1186/s40645-019-0277-y |
container_title |
Progress in Earth and Planetary Science |
container_volume |
6 |
container_issue |
1 |
_version_ |
1766167529489694720 |