Long-term trends of surface ozone in korea

Author: hcdw

August undefined, 2024

WebLong-term trends of surface ozone in Korea [2024] Yeo, Min Ju; Kim, Yong Pyo; To gain a better understanding of the state of the art of surface ozone in Korea, the trends of several indicators were presented based on the extensive surface ozone monitoring data in 16 administrative districts and Baekryeong island, a background area. Web1 de mar. de 2024 · Abstract. In the past decade, ozone (O3) pollution has become a severe environmental problem in China's major cities. Here, based on available observational records, we investigated the long-term trend of O3 pollution in China during 2014–2024. The O3 concentrations were slightly higher in urban areas than in non-urban …

The Long-Term Trends and Interannual Variability in Surface Ozone ...

Webozone and impact of meteorological factors in order to examine trends in ozone levels in South Korea, and also assesse the factors contributing to changes in ozone level in each region. WebThe model represented the observed annual cycle of surface ozone over East Asia well, including the spring/autumn peaks and summer troughs. Increases in ozone were associated primarily with... lintukalenteri 2023

Satellite-Based Long-Term Spatiotemporal Patterns of Surface Ozone ...

WebSome long-term trends of surface ozone, e.g. decrease in the average concentration, increase in the daily amplitude of the relative diurnal variations, increase in the monthly highest 5% of the ozone concentration, decrease in the monthly lowest 5% of the ozone concentration, increase in the frequencies at the high and low ends of the ozone ... WebAfter this period, their concentrations declined with much lower rates in most parts of Korea. In addition, isolated but noticeable numbers of places, especially in major ports, newly developing towns and industrial parks, sustained high … Web22 de jan. de 2024 · The long-term trend and periodicity of surface ozone at WLG during 1994–2013 are reported in the companion paper (Xu et al., 2016). Significant increasing trends have been detected in spring and autumn, while observations show no significant trend during summer when ozone is at its seasonal maximum. lintuhoitola

Current Status and Future Directions of Tropospheric ... - Korea …

The Long Term Trends of Tropospheric Ozone in Major Regions in Korea

Web12 de nov. de 2024 · The long-term change is primarily characterized by a sudden drop in 2011–2012 with an insignificant linear trend during the full period. Based on CAM-chem model simulations, meteorological factors played … lintujen tunnistusWeb(a) Yearly mean surface ozone mixing ratios at Hok Tsui (HT) in 1994–2024 (red) and yearly mixing ratios of ozone at 0 to 1 km from ozonesonde at King's Park in 1994–2024 (black). Shaded area... lintukirja puhelimeen

"Web5 de nov. de 2014 · The Atmospheric Infrared Sounder (AIRS) ozone data and the Global Positioning System Ozone (GPSO3) sonde data showed that the air mass originating from the polar formed a region with relatively high values of potential vorticity (PV) and ozone in the center of COL, and a secondary ozone peak appeared in the upper troposphere … " - Long-term trends of surface ozone in korea

Long-term trends of surface ozone in korea

The Long Term Trends of Tropospheric Ozone in Major Regions in Korea

WebIn terms of long-term variation, the O 3 concentrations have increased by +0.26 ppbv yr −1 (parts per billion by volume) on nationwide average, but their trends show large spatial variability. Singular value decomposition analyses further reveal that the long-term temporal evolution of O 3 is similar to that of nitrogen dioxide, although the ... Web31 de dez. de 2024 · This study was conducted for analyzing the contribution factors on ozone concentrations and its long term trends in each major city and province in Korea through several statistical methods...

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Web4 de jun. de 2024 · Ozone absorbs harmful UV rays at high elevations but acts as a pollutant gas in the lower atmosphere. It is necessary to monitor both the vertical profile and the total column ozone. In this study, variations in the ozone concentration of Pohang were divided into three vertical layers: the stratospheric layer (STL), the second ozone peak … WebThe long-term change is primarily characterized by a sudden drop in 2011–2012 with an insignificant linear trend during the full period. Based on CAM-chem model simulations, meteorological...

WebOzone (O 3) in the urban atmosphere can accumulate from photochemical processes with nitrogen oxides (NO x ), carbon monoxide (CO), and volatile organic compounds (VOCs) which are mainly emitted from anthropogenic activities such as fossil fuel combustions and the use of solvents. WebThe increasing trend in O3 produced in China accounted for 36 % of the total increasing trend and those in the other northeast Asian regions (the Korean Peninsula, coastal regions in East Asia, and Japan) each accounted for about 12-15 %.

Web31 de dez. de 2024 · The overall ozone levels in South Korea have been consistently increasing over the past 10 years. The ozone concentrations in Seoul, the biggest city in Korea, are the lowest in all areas with the highest increasing ratio for 95th 95 t h ozone. Web1 de jan. de 2024 · Daily maximum 8-h moving average ozone concentrations (hereafter MDA8 ozone), a standard ozone metric of the U.S. EPA's National Ambient Air Quality Standards, increased in Korea from 38.3 ppb in 2001 to 51.9 ppb in 2024, nearly 1 ppb per year, during warm seasons (April to September) ( Figure S1 ).

Web12 de mai. de 2024 · Both satellite and surface observational data indicate that the NO 2 concentrations from July 2024 to January 2024, preceding the COVID-19 outbreak in South Korea, are persistently lower than the climatological values by 6%–8%, suggesting that reductions of NO x occurred independently of the COVID-19 pandemic.

WebLong-term trends of surface ozone in Korea @article{Yeo2024LongtermTO, title={Long-term trends of surface ozone in Korea}, author={Min Ju Yeo and Yong Pyo Kim}, journal={Journal of Cleaner Production}, year={2024}, volume={294}, pages={125352} } M. Yeo, Y. Kim; Published 20 April 2024; Environmental Science; … lintukamera kuusamoWeb1 de dez. de 2024 · In South Korea, the annual mean surface ozone increases in all administrative districts from 2001 to 2024 (by 0.3-1.7 ppbv yr − 1 ) (Yeo et al., 2024). Previous studies also reported the... lintukalliontieWeb1 de set. de 2024 · Here, we used a novel approach to analyze the trends in the concentrations of six national criteria air pollutants, carbon monoxide (CO), sulfur dioxide (SO 2), nitrogen dioxide (NO 2), PM 10, PM 2.5, and surface ozone (O 3), between 2001 and 2024, and the factors affecting the concentrations of CO and SO 2 at the district … bolia kastenWeb1 de jan. de 2024 · Daily maximum 8-h moving average ozone concentrations (hereafter MDA8 ozone), a standard ozone metric of the U.S. EPA's National Ambient Air Quality Standards, increased in Korea from 38.3 ppb in 2001 to 51.9 ppb in 2024, nearly 1 ppb per year, during warm seasons (April to September) ( Figure S1 ). boli la rosiiWeb12 de nov. de 2024 · The long-term change is primarily characterized by a sudden drop in 2011–2012 with an insignificant linear trend during the full period. Based on CAM-chem model simulations, meteorological factors played … lintukoiraWebThis review summarizes the studies from the past 20 years associated with photochemical ozone in Korea, covering issues of long-term ozone trends analysis, its precursor emission inventories, biogenic VOCs emission, impact on the ecosystem, background ozone and long-range transport, health impacts, climate feedback, aerosol surface … lintukallionkuja 6 vantaaWeb1 de set. de 2024 · The annual mean concentrations of CO, SO2, PM10, PM2.5, and NO2 generally decreased, while O3 levels showed an increasing trend, over the last 18 years in Korea. We also found that NO2... lintukorvenkuja 1