Seasonal prediction of surface O3-related meteorological conditions in summer in North China

Yin, Zhicong; Li, Yuyan; Cao, Bufan

doi:10.1016/j.atmosres.2020.105110

Cited by 15 publications

(6 citation statements)

References 28 publications

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“…It is important to assess and quantify the effects of air quality on public health ( Yin et al, 2020 ). The AQI is based on the maximum concentrations of the six criteria pollutants; however, a single pollution index may not adequately reflect the actual levels of air pollution and thus may underestimate the severity of health risks due to the exposure to multiple air pollutants ( Xu et al, 2022 ).…”

Section: Discussionmentioning

confidence: 99%

Air pollution and its associated health risks before and after COVID-19 in Shaanxi Province, China

Cheng

et al. 2023

Environmental Pollution

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Section: Discussionmentioning

confidence: 99%

Air pollution and its associated health risks before and after COVID-19 in Shaanxi Province, China

Cheng

et al. 2023

Environmental Pollution

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“…Ground-level O 3 concentrations have been observed since 2014 in China and are not sufficient to find longterm standing climate relationships. In this study, we employed the ozone weather index (OWI) during 1980-2018, which has been defined by Yin et al (2019;2020b) and was proven to be a comprehensive and effective index determining the maximum daily average 8-h concentration of ozone (MDA8 O 3 ). The formula for OWI in North China is as follows:…”

Section: Data Descriptionsmentioning

confidence: 99%

“…The east-west dipole of spring snow cover anomalies in Eurasia was closely related to the East Asia summer monsoon by stimulating atmospheric responses such as the EU pattern (Yim et al, 2010). When building a seasonal prediction model of surface O 3 -related meteorology, the May snow cover in West Siberia was selected as a predictor and effectively increased the predictability (Yin et al, 2020b).…”

mentioning

confidence: 99%

Decadal Changes of Connections among Snow cover in West Siberia, Eurasia Teleconnection and O<sub>3</sub>-related meteorology in North China

Yin¹,

Wang²,

Wang³

2021

Preprint

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Abstract. Severe surface ozone (O3) pollution frequently occurred in North China and obviously damages human health and ecosystems. The meteorological conditions effectively modulate the variations in O3 pollution. In this study, the interannual relationship between O3-related meteorology and late-spring snow cover in West Siberia was explored, and the reasons of its decadal change were also physically explained. Before mid-1990s, less snow cover could enhance net heat flux and stimulate positive phase of the Eurasia (EU) teleconnection in summer. The positive EU pattern resulted in hot-dry air and intense solar radiation in North China, which could enhance the natural emissions of O3 precursors and photochemical reactions in the atmosphere closely related to high O3 concentrations. However, after the mid-1990s, the south edge of the dense snow cover area in West Siberia shifted northward by approximately 2° in latitude and accompanied radiation and heat flux also retreated toward the polar region. The connections among snow anomalies, EU pattern and surface O3 became insignificant and thus influenced the stability of the predictability.

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“…Focus will be put on the characteristics of wind speed intensities and temporal variations in different largescale circulation types in the two distinct periods, while the possible reasons are beyond the scope of this study. Besides, there are many recent studies on the relationship between the meteorological parameter of wind and the concentration of air pollutants over Beijing and its surroundings (Chen et al, 2009;Zhang et al, 2012;Miao et al, 2017;Yin et al, 2019Yin et al, , 2020. It is found that meteorological paramters are influenced by weather systems of large and small scales (Aneja et al, 2000;Cao and Yin, 2020).…”

Section: Introductionmentioning

confidence: 99%

Characteristics of large-scale atmospheric circulation patterns conducive to severe spring and winter wind events over beijing in china based on a machine learning categorizing method

et al. 2022

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Severe wind events which occur in the metropolis of Beijing in China bring major catastrophes. Characteristics of severe winter and spring wind events over Beijing during the past 40 years have been analyzed. An artificial intelligence-based method is adopted to categorize the favorable large-scale circulation patterns and dominant weather systems. Four categories are concluded and compared to each other in terms of distributions of geopotential height at 500 hPa, temperature at 500 hPa, sea level pressure and their corresponding anomalies in 1979–2019. It is found that the first category (T1) which is dominated by strong cold trough at upper levels with strong cold-core high locating at surface is the most conducive circulation pattern, while the fourth category (T4) which is controlled by weak trough and strong ridge with strong low cyclone at surface is the least one. The second and third categories, represented by T2 and T3, are under the control of strong cold trough and warm ridge at upper levels with weak high at surface, and of weak trough and strong ridge with strong low cyclone at surface, respectively. Characteristics and differences under different backgrounds of global temperatures are analyzed by separating the past 40years into two distinct periods. The decreasing trends of intensities of the trough and ridge, the temperature at 500hPa, together with the surface systems, are found to be responsible for the decrease in severe wind events in T1, T2 and T3 in the last 20 years, while T4 is distinct to the other three categories with little change in its circulation pattern, and thus continues contributing to the severe wind events over Beijing. The results found in this study with the usage of an AI-based algorithm will benefit for the operational forecasting for extreme wind events over Beijing.

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Seasonal prediction of surface O3-related meteorological conditions in summer in North China

Cited by 15 publications

References 28 publications

Air pollution and its associated health risks before and after COVID-19 in Shaanxi Province, China

Air pollution and its associated health risks before and after COVID-19 in Shaanxi Province, China

Decadal Changes of Connections among Snow cover in West Siberia, Eurasia Teleconnection and O<sub>3</sub>-related meteorology in North China

Characteristics of large-scale atmospheric circulation patterns conducive to severe spring and winter wind events over beijing in china based on a machine learning categorizing method

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Seasonal prediction of surface O3-related meteorological conditions in summer in North China

Cited by 15 publications

References 28 publications

Air pollution and its associated health risks before and after COVID-19 in Shaanxi Province, China

Air pollution and its associated health risks before and after COVID-19 in Shaanxi Province, China

Decadal Changes of Connections among Snow cover in West Siberia, Eurasia Teleconnection and O&lt;sub&gt;3&lt;/sub&gt;-related meteorology in North China

Characteristics of large-scale atmospheric circulation patterns conducive to severe spring and winter wind events over beijing in china based on a machine learning categorizing method

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Decadal Changes of Connections among Snow cover in West Siberia, Eurasia Teleconnection and O<sub>3</sub>-related meteorology in North China