Long-term trends of surface ozone in korea

Author: xfmt

August undefined, 2024

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 ). 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.

Distributions of surface ozone and wind fields in "High" years (a ...

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 … 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 … how to store raspberries in the refrigerator

Long-term trends of surface ozone in Korea

Web9 de jun. de 2024 · Previous studies have shown that PM 2.5 has an adverse impact on human health and long-term exposure to high PM 2.5 concentration environment will lead ... D.J., Liao, H., Shen, L., Zhang, Q. and Bates, K.H. (2024a). Anthropogenic drivers of 2013–2024 trends in summer surface ozone in China. PNAS ... Korea; Middle East; … WebThe impacts are larger for higher levels of concentration, with 31.7% (63.3%) or more prevalence of the >80 ppb range with the same increased DT frequency. We conclude that synoptic weather and its long-term trends play important roles in the increased surface ozone recently seen in South Korea. 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. reader dc asian font pack

Distributions of surface ozone and wind fields in "High" years (a ...

The Long-Term Trends and Interannual Variability in Surface …

Webear trend of +0.26 ppbv/yr (+1.15 %/yr). We also examine the meteorological inﬂuences on the surface O 3 levels over South Korea using a combined analysis of KZ-ﬁlter and multiple linear regressions between surface O 3 and meteorological variables. Time-series of surface O 3 are decomposed into the short-term, seasonal, and long-term WebWhich long-term components of PM2.5 concentrations decreased significantly at both an urban (–3.40 µg m–3 y–1) and rugged (–1.16 µg m–3 y–1) stations. The most serious infection predominantly occurred in to previously period than recent years, when little attention was nature paid. how to store raw shelled walnutsWeb1 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... how to store raw turnips

"WebLong-term trends of impacts of global gasoline and diesel emissions on ambient PM2.5 and O3 pollution and the related health burden for 2000-2015 IOP Publishing October 6, 2024 " - Long-term trends of surface ozone in korea

Long-term trends of surface ozone in korea

Long-term trends and affecting factors in the concentrations of ...

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. WebThree causes of long-term trends of O 3have beendiscussed:(1)thedecreaseofNOtitrationeffect,(2)theincreaseof transboundarytransport,and(3) thedecreaseofinsituphotochemicalproduction.Thetotalozone(TO)wasdeﬁnedby[TO]¼[O3]þ[NO2] …

Did you know?

WebPhotosynthesis by trees is expected to contribute to preventing climate change including global warming. However, the current levels of tropospheric ozone (O3) reduce the uptake of photosynthetic carbon dioxide (CO2) by forest trees in Japan, which is a concern. Furthermore, it is unknown how much O3 should be reduced to prevent plants’ … 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.

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 … WebThis study was conducted for analyzing the contribution factors on ozone concentrations and its long term trends in each major city and province in Korea... DOAJ is a unique and extensive index of diverse open access journals from around the world, driven by a growing community, committed to ensuring quality content is freely available online ...

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 … Web1 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 …

WebTo investigate the characteristics of ozone trends during a whole year including each season (spring, summer, fall and winter), the seasonal 5th%, 33th%, 50th%, 67th%, and 95th% ozone concentration were considered.

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 ... how to store razor bladesWeb15 de jan. de 2024 · As shown in Fig. S3, surface ozone continuously increased from 2006 to 2024 at the WQS site with a slow decline rate of surface NO 2 (−0.3 ppb yr −1, p = 0.1). In this condition, the WQS site is more like an urban site at present with the rapid urbanization of the PRD region. reader dc gratisWebOn detection of turnaround and recovery in trend for ozone. Journal of Geophysical Research, 107, pp.10-1029. Frederick, John E., and Elizabeth C. Weatherhead. Temporal changes in surface ultraviolet radiation: a study of the robertson-berger meter and dobson data records.T Photochemistry and photobiology 56, no. 1 (1992): 123-131. reader diaper fanfiction