Analysis of the Optical Characteristic of Littoral Aerosol Influenced by Typhoon

Qiang, 赵强 Zhao; Shizhi, 杨世植 Yang; Yanli, 乔延利 Qiao; Guangyu, 袁广宇 Yuan

doi:10.3788/aos20082811.2046

Cited by 3 publications

(1 citation statement)

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“…CT4 and CT6 easily form typhoons or tropical cyclones. The strong winds and heavy PRE brought by typhoons or tropical cyclones enable near-surface pollutants to be well dispersed and removed, but also bring particles with a larger diameter from the ocean, and pollutants that diffuse to the upper atmosphere also cause high AOD [37]. In addition, the northern winds caused by typhoons or tropical cyclones in the process of moving northward into the East China Sea may also transport pollutants from the north to the PRD, causing a high AOD [38].…”

Section: Typementioning

confidence: 99%

Influence of Atmospheric Circulation on Aerosol and its Optical Characteristics in the Pearl River Delta Region

Liu

Lai

et al. 2020

Atmosphere

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At present, few studies have focused on the impact of circulation patterns on aerosol pollution in the Pearl River delta region (PRD) region based on the objective circulation classification method. Based on PM2.5 observation data, meteorological observation data, Aerosol Robotic Network (AERONET) aerosol observation data and European Center for Medium-Range Weather Forecasting (ECMWF) ERA (European Reanalysis)-Interim data in the PRD during 2013 to 2017, the air pollution level, meteorological conditions, and aerosol optical and radiation characteristics in different circulation patterns are studied in this paper. Using ECMWF ERA-Interim sea level pressure, nine circulation patterns were determined based on the T-mode principal component analysis (PCA) combined with the k-means clustering method. There were significant differences in PM2.5 values under different circulation patterns, indicating that the change of atmospheric circulation is an important factor driving the change of air quality. The prevailing wind in winter (northerly wind) facilitates the transport of pollutants from the north of the PRD and forms severe air pollution, while the prevailing wind in summer (southerly wind) brings clean air from the South China Sea; additionally, a high frequency of precipitation benefits the wet scavenging of pollutants, resulting in improved air quality in the PRD region. The impact of circulation patterns on the AOD (aerosol optical depth) is basically similar to that of the PM2.5 concentration. The study also found that the annual average total radiation was negatively correlated with the annual average PM2.5 concentration. In future, we plan to identify which methods and data are suitable for circulation classification in the PRD region.

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Section: Typementioning

confidence: 99%

Influence of Atmospheric Circulation on Aerosol and its Optical Characteristics in the Pearl River Delta Region

Liu

Lai

et al. 2020

Atmosphere

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Analyses of aerosol properties in Hefei based on polarization measurements of a sun photometer

Wang

Yang

Zhao

et al. 2011

International Journal of Remote Sensing

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Impacts of Climate Change on Human Health and Adaptation Strategies in South China

Du¹,

Wang²,

Yang³

et al. 2013

Advances in Climate Change Research

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This study reviews the impacts of climate change on human health and presents corresponding adaptation strategies in South China. The daily mean surface air temperatures above or below 26.4 • C increase the death risk for the people in Guangzhou, especially the elderly are vulnerable to variations in temperature. Heat waves can cause insomnia, fatigue, clinical exacerbation, or death from heatstroke etc., while cold spells show increases in patients with fractures. During a cold spell period, the rates of both on-site emergency rescues and non-implementable rescues increase, and the risk of non-accidental deaths and respiratory disease deaths significantly rise as well. Both time series of hazy days and ozone concentrations have significant positive correlations with the number of patients with cardiovascular diseases. Both malaria and dengue fever reach higher altitudes and mountainous areas due to climate warming. Climate change is likely to bring stronger heat waves in the future, thereby increasing heat wave-related illnesses and deaths, particularly in the metropolitan areas of the Pearl River Delta. The projected increase of continuous cold days in Guangdong province and parts of northern Guangxi province will affect residents' health in the future. The rising temperature exaggerates ozone pollution, but it is not clear whether climate change is aggravating or mitigating haze pollution. The transmission potential of malaria in South China will increase by 39%-140% and the transmission season will extend by 1-2 months with an air temperature increase of 1-2 • C. By 2050, most areas in Hainan province are projected to convert from non-endemic dengue into endemic dengue areas. The aging population will cause more vulnerable people. To mitigate the adverse impacts of climate change on human health, sound and scientific adaptation strategies must be adopted in advance, such as strengthening the surveillance of epidemic diseases in potential transmission areas, conducting timely weather forecasting for human health, evaluating health vulnerability to climate change, improving environmental and health education, and strengthening hazard management and the cooperation between meteorological and health departments.

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Analysis of the Optical Characteristic of Littoral Aerosol Influenced by Typhoon

Cited by 3 publications

References 0 publications

Influence of Atmospheric Circulation on Aerosol and its Optical Characteristics in the Pearl River Delta Region

Influence of Atmospheric Circulation on Aerosol and its Optical Characteristics in the Pearl River Delta Region

Analyses of aerosol properties in Hefei based on polarization measurements of a sun photometer

Impacts of Climate Change on Human Health and Adaptation Strategies in South China

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