KOPRI Repository

Southern Hemisphere mid- and high-latitudinal AOD, CO, NO2, and HCHO: spatiotemporal patterns revealed by satellite observations

Cited 0 time in wos
Cited 1 time in scopus
Metadata Downloads
Title
Southern Hemisphere mid- and high-latitudinal AOD, CO, NO2, and HCHO: spatiotemporal patterns revealed by satellite observations
Other Titles
위성 관측에 의한 남반구 중 고위도에서의 AOD, CO, NO2, 그리고 HCHO 시공간 변동 패턴 평가
Authors
Ahn, Dha Hyun
Choi, Taejin
Kim, Jhoon
Park, Sang Seo
Lee, Yun Gon
Kim, Seong-Joong
Koo, Ja-Ho
Subject
Geology
Keywords
Aerosol optical depth; Carbon monoxide; Climatology; Formaldehyde; Nitrogen dioxide; Southern Hemisphere
Issue Date
2019-04
Citation
Ahn, Dha Hyun, et al. 2019. "Southern Hemisphere mid- and high-latitudinal AOD, CO, NO2, and HCHO: spatiotemporal patterns revealed by satellite observations". PROGRESS IN EARTH AND PLANETARY SCIENCE, 6(34): 1-16.
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.
URI
https://repository.kopri.re.kr/handle/201206/10911
DOI
http://dx.doi.org/10.1186/s40645-019-0277-y
Appears in Collections  
2018-2018, Investigation for the cause of east-west different climate responses in Antarctica (18-18) / Kim, Seong-Joong (PE18010)
2017-2018, Investigation for the cause of east-west different climate responses in Antarctica (17-18) / Choi, Taejin; Kim, Seong-Joong (PE17010; PE18010)
Files in This Item

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse