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Vulnerability and Burden of All-Cause Mortality Associated with Particulate Air Pollution during COVID-19 Pandemic: A Nationwide Observed Study in Italy
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| BACKGROUND: Limited evidence is available on the health effects of particulate matter (PM including PM2.5 with an aerodynamic diameter ≤ 2.5 µm; PM10, ≤ 10 µm; PM2.5-10, 2.5-10 µm) during the pandemic of COVID-19 in Italy. The aims of the study were to examine the associations between all-cause mortality an... |
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Spatiotemporal Variation of Air Quality (PM and NO2) in Southern Paris during COVID-19 Lockdown Periods
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| In urban areas, road transportation is the main source of pollutants, and weather impacts spatiotemporal variation of air quality. In this paper, we demonstrate the spatiotemporal variabilities of particulate matter (PM10 and PM2.5) and NO2 in the south of Paris, with an emphasis on the comparison of air pollutant leve... |
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The Impact of COVID-19 related Measures on the Solar Resource in Areas with High Levels of Air Pollution
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| Abstract: Restrictions enacted to reduce the spreading of COVID-19 have resulted in notably clearer skies around the world. In this study, we confirm that reduced levels of air pollution correlate with unusually high levels of clear sky insolation in Delhi, India. Restrictions here were announced on March 19th, with th... |
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Exploring the spatial heterogeneity and temporal homogeneity of ambient PM(10) in nine core cities of China
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| We focus on the causes of fluctuations in wintertime PM(10) in nine regional core cities of China using two machine learning models, Random Forest (RF) and Recurrent Neural Network (RNN). RF and RNN both show high performance in predicting hourly PM(10) using only gaseous air pollutants (SO(2), NO(2) and CO) as inputs,... |
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Response of major air pollutants to COVID-19 lockdowns in China
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| Abstract COVID-19 suddenly struck Wuhan at the end of 2019 and soon spread to the whole country and the rest of world in 2020. To mitigate the pandemic, China authority has taken unprecedentedly strict measures across the country. That provides a precious window to study how the air quality response to quick decline of... |
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Correlation between climate indicators and COVID-19 pandemic in New York, USA
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| Abstract This study analyzed the association between COVID-19 and climate indicators in New York City, USA. We used secondary published data from New York city health services and National weather service, USA. The climate indicators included in the study are average temperature, minimum temperature, maximum temperatur... |
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Air pollution episodes during the COVID-19 outbreak in the Beijing–Tianjin–Hebei region of China: An insight into the transport pathways and source distribution
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| ABSTRACT Although anthropogenic emissions decreased, polluted days still occurred in the Beijing–Tianjin–Hebei (BTH) region during the initial outbreak of the coronavirus disease (COVID-19) Analysis of the characteristics and source distribution of large-scale air pollution episodes during the COVID-19 outbreak (from 2... |
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Examining the associations between perceived built environment and active travel, before and after the COVID-19 outbreak in Shiraz city, Iran
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| This study aims to evaluate the effects of the COVID-19 pandemic and policies to control the outbreak such as quarantine, jobs closures, and traffic restrictions on active travel of Central Businesses District (CBD) residents in comparison with the non-CBD residents of Shiraz, Iran;and examine the relationship between ... |
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Beyond virology: environmental constraints of the first wave of COVID-19 cases in Italy
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| Global warming and air pollution affect the transmission pathway and the survival of viruses, altering the human immune system as well. The first wave of the COVID-19 pandemic dramatically highlights the key roles of climate and air chemistry in viral epidemics. The elongated form of the Italian peninsula and the two m... |
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Relationship Between COVID-19-Infected Number and PM(2.5) Level in Ambient Air of Bangkok, Thailand
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| Several empirical studies of reductions in air pollutants as social distancing and working from home (WFH) policies have sparked recommendations that the COVID-19 pandemic might have been responsible for better air quality particularly in urban area. These findings offer a compelling provocation for the scientific comm... |
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Unsupervised and Supervised Learning based Classification Models for Air Pollution Data
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| As far as, air quality index (AQI) is concerned, the long duration lockdown that was applied in India in year 2020 due to Covid-19 pandemic was very fruitful. The reason being, due to complete ban on the movement of people and automobiles, the air became so pure and clean, and AQI value went much down. The secondary ai... |
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Indirect implications of COVID-19 towards sustainable environment: An investigation in Indian context
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| Efficacious transmittal of COVID-19 has compelled numerous countries worldwide to embrace temporary yet dramatic measures such as locking down entire cities, restricting all forms of transportation, imposing lockdowns, maintaining social distancing etc. These actions have considerably enhanced the quality of ambient ai... |
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Inferring the main drivers of SARS-CoV-2 global transmissibility by feature selection methods
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| Identifying the main environmental drivers of SARS-CoV-2 transmissibility in the population is crucial for understanding current and potential future outbursts of COVID-19 and other infectious diseases. To address this problem, we concentrate on the basic reproduction number $R_0$, which is not sensitive to testing cov... |
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Compromising situation of India’s bio-medical waste incineration units during pandemic outbreak of COVID-19: Associated environmental-health impacts and mitigation measures()
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| COVID-19 induced pandemic situations have put the bio-medical waste (BMW) management system, of the world, to test. Sudden influx, of COVID-infected patients, in health-care facilities, has increased the generation of yellow category BMW (Y-BMW) and put substantial burden on the BMW-incineration units of India. This st... |
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The Role of Meteorological Variables and Aerosols in the Transmission of COVID‐19 During Harmattan Season
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| The role of atmospheric parameters and aerosols in the transmission of COVID‐19 within tropical Africa, especially during the harmattan season, has been under‐investigated in published papers. The harmattan season within the West African region is associated with significant dust incursion from the Bodele depression an... |
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COVID-19 Prevention and Air Pollution in the Absence of a Lockdown
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| Recent studies demonstrate that air quality improved during the coronavirus pandemic due to the imposition of social lockdowns. We investigate the impact of COVID-19 on air pollution in the two largest cities in Taiwan, which were not subject to economic or mobility restrictions. Using a generalized difference-in-diffe... |
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Modeling the relationship between carbon emissions and environmental sustainability during COVID-19: a new evidence from asymmetric ARDL cointegration approach
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| The study aims to examine the CO2 emissions by considering the implication of COVID-19 under strict lockdown in India. The nonlinear (asymmetric) relationship is investigated between CO2 emission and COVID-19 with its specific determinants. The positive and negative asymmetries of COVID-19 determinants are also capture... |
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Health Benefits of Sustained Air Quality Improvements in New York City: A Simulation Based on Air Pollution Levels During the COVID-19 Shutdown
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| New York City (NYC) experienced a sharp decline in air pollution during the COVID-19 shutdown period (March 15, 2020 to May 15, 2020) — albeit at high social and economic costs. It provided a unique opportunity to simulate a scenario in which the city-wide air quality improvement during the shutdown was sustained over ... |
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Characteristics of carbonaceous aerosols in ambient PM2.5 during the COVID-19 period in Nanjing
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| In order to explore the variations of carbon components[including organic carbon (OC) and element carbon (EC)] in PM2.5 at the urban area of Nanjing during the breakout of COVID-19 period, PM2.5, OC and EC mass concentrations were measured by online monitoring from January to February 2020. Compared to the concentratio... |
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Understanding ozone pollution in the Yangtze River Delta of eastern China from the perspective of diurnal cycles
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| Abstract Ozone (O3) pollution has aroused increasing attention in China in past years, especially in the Yangtze River Delta (YRD), eastern China. Ozone and its precursors generally feature different diurnal patterns, which is closely related to atmospheric physical and chemical processes. This work aims to shed more l... |
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Global Daily CO$_2$ emissions for the year 2020
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| The diurnal cycle CO$_2$ emissions from fossil fuel combustion and cement production reflect seasonality, weather conditions, working days, and more recently the impact of the COVID-19 pandemic. Here, for the first time we provide a daily CO$_2$ emission dataset for the whole year of 2020 calculated from inventory and ... |
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Significance between Air pollutants, Meteorological Factors and COVID-19 Infections: Probable Evidences in India
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| SARS-CoV-2 (Coronavirus) disease represents the causative agent with a potentially fatal risk which is having great global human health concern. Earlier studies suggested that air pollutants and meteorological factors were considered as the risk factors for acute respiratory infection, which carries harmful pathogens a... |
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Characterization of PM2.5 sources in a Belgrade suburban area: a multi-scale receptor-oriented approach.
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| Designated as the most harmful for health, PM2.5 aerosol fraction was a subject of our study. It was collected for all four seasons during 2014/15 in the suburban area of Belgrade (Serbia) and analysed for Al, Si, P, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Br, As, Ba and Pb elements and for NH4+, NO3- and SO42- io... |
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Influence of NOX, Cl, and Br on the upper core of the ozone valley over the Tibetan Plateau during summer: Simulations with a box model
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| The ozone valley (OV) in the upper troposphere-lower stratosphere (UTLS) over the Tibetan Plateau (TP) has been identified since the 1990s during boreal summer. Recent studies have shown that another upper core of the OV appeared in the middle and upper stratosphere (10-2â¯hPa); however, the formation mechanism of the... |
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Air and water health: industrial footprints of COVID-19 imposed lockdown
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| Overall lockdown limitations toward the start of the year 2020 are credited to the annihilation and fatalities worldwide because of COVID-19. Most of the nations revealed rapid growth of COVID-19 cases and subsequently declared lockdown in several stages. Because of these lockdowns, industries had to stop producing goo... |
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Effect of COVID-19 lockdown on the water quality index of River Gomti, India, with potential hazard of faecal-oral transmission
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| The COVID-19 lockdown has been reported as a “ventilator” for the reinstatement of natural resources across the globe. Hence, the present study attempts to evaluate the impact of COVID-19 lockdown on the water quality of River Gomti across its stretch of ~960 km through the assessment of ‘Water Quality Index’ (WQI). Th... |
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Trajectory Simulation and Prediction of COVID-19 via Compound Natural Factor (CNF) Model in EDBF Algorithm
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| Abstract Natural and non-natural factors have combined effects on the trajectory of COVID-19 pandemic, but it is difficult to make them separate To address this problem, a two-stepped methodology is proposed First, a compound natural factor (CNF) model is developed via assigning weight to each of seven investigated nat... |
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Pollution, economic growth, and COVID-19 deaths in India: a machine learning evidence
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| This study uses two different approaches to explore the relationship between pollution emissions, economic growth, and COVID-19 deaths in India. Using a time series approach and annual data for the years from 1980 to 2018, stationarity and Toda-Yamamoto causality tests were performed. The results highlight unidirection... |
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Lockdowns and reduction of economic activities during the COVID-19 pandemic improved air quality in Alexandria, Egypt
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| Parallel reductions in atmospheric aerosols (particulate matter (PM)) and nitrogen dioxide (NO2) accompanied the drastic measures that were adopted to limit the spread of COVID-19. The results of this preliminary study conducted in northern Egypt revealed that ambient PM10, PM2.5, and NO2 levels decreased by 22.8%, 29.... |
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Air Pollution Increases the Incidence of Upper Respiratory Tract Symptoms among Polish Children
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| A substantial proportion of airway disease’s global burden is attributable to exposure to air pollution. This study aimed to investigate the association between air pollution, assessed as concentrations of particulate matter PM2.5 and PM10 on the upper respiratory tract symptoms (URTS) in children. A nation-wide, quest... |
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Reduction of Atmospheric Effects in Satellite Images During the COVID-19 Induced Lockdown
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| The quality of satellite images is affected due to the scattering and absorption of sunlight by atmospheric molecules and aerosols. Aerosols are small particles suspended in the atmosphere which affects the air quality. The concentration and characteristics of the atmospheric aerosols can vary from place to place. Aero... |
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Effect of coronavirus lockdowns on the ambient seismic noise levels in Gujarat, northwest India
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| The Covid-19 pandemic created havoc and forced lockdowns in almost all the countries worldwide, to inhibit social spreading. In India as well, as a precautionary measure, complete and partial lockdowns were announced in phases during March 25 to May 31, 2020. The restricted human activities led to a drastic reduction i... |
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Variation in Concentration and Sources of Black Carbon in a Megacity of China During the COVID‐19 Pandemic
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| Black carbon (BC) not only warms the atmosphere but also affects human health. The nationwide lockdown due to the Coronavirus Disease 2019 (COVID‐19) pandemic led to a major reduction in human activity during the past 30 years. Here, the concentration of BC in the urban, urban‐industry, suburb, and rural areas of a meg... |
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The impacts of COVID-19 lockdown on PM(10) and SO(2) concentrations and association with human mobility across Turkey
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| The SARS-CoV-2 virus pandemic (COVID-19) has caused 2.25 million deaths worldwide by February 3, 2021 (JHU, 2021) and still causing severe health and economic disruptions with increasing rates. This study investigates the impact of lockdown measures on ambient air pollution and its association with human mobility in 81... |
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Non-stop industries were the main source of air pollution during the 2020 coronavirus lockdown in the North China Plain
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| Despite large decreases of emissions of air pollution during the coronavirus disease 2019 (COVID-19) lockdown in 2020, an unexpected regional severe haze has still occurred over the North China Plain. To clarify the origin of this pollution, we studied air concentrations of fine particulate matter (PM(2.5)), NO(2), O(3... |
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Is epithelial barrier hypothesis the key to understanding the higher incidence and excess mortality during COVID-19 pandemic? The case of Northern Italy
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| The high incidence and increased mortality of COVID-19 make Italy among the most impacted countries by SARS-CoV-2 outbreak. In the beginning of the pandemic, Northern regions accounted for 40% of cases and 45% of deaths from COVID-19 in Italy. Several factors have been suggested to explain the higher incidence and exce... |
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Emission reduction of black carbon and polycyclic aromatic hydrocarbons during COVID-19 pandemic lockdown
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| The global pandemic COVID-19 necessitated various responses throughout the world, including social distancing, use of mask, and complete lockdown. While these measures helped prevent the community spread of the virus, the resulting environmental benefits of lockdown remained mostly unnoticed. While many studies documen... |
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A vision on air pollution in cities and the human effect
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| The human effect on air quality in cities and the evolution of air pollution is obvious, due to economic activity, vehicle traffic, etc The situation created indirectly by COVID-19, has caused many countries to impose during certain periods restriction of movement and stoppage of economic activities, which has allowed ... |
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AIR quality and COVID-19 adverse outcomes: Divergent views and experimental findings
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| BACKGROUND: The questioned link between air pollution and coronavirus disease 2019 (COVID-19) spreading or related mortality represents a hot topic that has immediately been regarded in the light of divergent views. A first “school of thought” advocates that what matters are only standard epidemiological variables (i.e... |
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Comprehensive insights into O3 changes during the COVID-19 from O3 formation regime and atmospheric oxidation capacity
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| Abstract Economic activities and the associated emissions have significantly declined during the 2019 novel coronavirus (COVID-19) pandemic, which has created a natural experiment to assess the impact of the emitted precursor control policy on ozone (O3) pollution In this study, we utilized comprehensive satellite, gro... |
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Imprints of COVID‐19 Lockdown on GNSS Observations: An Initial Demonstration Using GNSS Interferometric Reflectometry
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| The ongoing coronavirus disease 2019 (COVID‐19) pandemic has imposed tight mobility restrictions in urban areas, causing substantial reduction in roadway traffic. Many public parking lots are nearly vacant as people across the world have gone on lockdown since mid‐March. This environmental change may have impacts on Gl... |
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Linking Outdoor Air Temperature and SARS-CoV-2 Transmission in the US Using a Two Parameter Transmission Model
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| Outdoor temperature lower than 50F and greater than 70F is shown to nearly double the transmission efficiency of the SARS-CoV-2 virus. Outdoor temperature is an important factor behind the current surge in US Covid-19 cases. Correlation of northern state infection data and outdoor temperatures is used to identify the c... |
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A breath of deadly air
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| Air pollution kills many more people every year than COVID-19 has in its first year but is receiving less attention. India is facing a pollution crisis from multiple sources, while European cities have mainly their motor vehicles to blame. Mounting evidence suggests that particle pollution may harm every organ of the b... |
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Effects of Working from Home on Greenhouse Gas Emissions and the Associated Energy Costs in Six Australian Cities
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| Working from home (WFH) has been imposed due to the COVID-19 pandemic. The adoption of WFH impacts energy use in the residential, commercial, and transportation sectors. Consequently, this affects the greenhouse gas emission (GHGE) and the associated energy costs to workers and employers. This study estimates the effec... |
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Enhanced photochemical formation of secondary organic aerosols during the COVID-19 lockdown in Northern China
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| To eliminate the spread of a novel coronavirus breaking out in the end of 2019 (COVID-19), the Chinese government has implemented a nationwide lockdown policy after the Chinese lunar New Year of 2020, resulting in a sharp reduction in air pollutant emissions. To investigate the impact of the lockdown on aerosol chemist... |
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Health Impact Assessment of the 2020 Washington State Wildfire Smoke Episode: Excess Health Burden Attributable to Increased PM(2.5) Exposures and Potential Exposure Reductions
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| Major wildfires starting in the summer of 2020 along the west coast of the United States made PM(2.5) concentrations in this region rank among the highest in the world. Washington was impacted both by active wildfires in the state and aged wood smoke transported from fires in Oregon and California. This study aims to e... |
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Determining the environmental and atmospheric effects of coronavirus disease 2019 (COVID-19) quarantining by studying the total aerosol optical depth (AOD), black carbon, organic matter, and sulfate in Blida City of Algeria
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| BACKGROUND: To study, estimate and discuss the variations of the aerosol optical depth (AOD), black carbon, sulfate and organic matter, in the atmosphere in Blida City of Algeria, which was greatly affected by COVID-19 pandemic. METHODS: We analyzed the effects of changes in the total AOD, black carbon, sulfate, and or... |
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Estimating the Inadvertent Decrement in Mortality due to Reduction in Ambient Fine Particulate Concentrations During COVID-19 Lockdown in India
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| The adverse health effects of long and short-term exposure to ambient air pollutants are well established in the epidemiological literature. Amongst all pollutants, fine particulate matter (PM(2.5)), poses a significant mortality risk because of its toxicity and extensive human exposure. During COVID-19 lockdowns, nume... |
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Occurrence and risk assessment of pharmaceuticals and personal care products (PPCPs) against COVID-19 in lakes and WWTP-river-estuary system in Wuhan, China
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| The consumption of pharmaceuticals and personal care products (PPCPs) for controlling and preventing the COVID-19 would have sharply increased during the pandemic. To evaluate their post-pandemic environmental impacts, five categories of drugs were detected in lakes and WWTP-river-estuary system near hospitals of Jinyi... |
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Investigating of climate factors associated with the number of COVID-19 incidences in Saudi Arabia
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| This study investigates the possible association between the climate variables of daily average temperature (°C), relative humidity (%), wind speed (mph), air pressure (mmHg), and the number of COVID-19 incidents in five main cities in Saudi Arabia. Furthermore, other non-climate factors that might influence the number... |
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COVID-19 pandemic: Impacts on the air quality during the partial lockdown in São Paulo state, Brazil
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| In early March 2020, the World Health Organization declared the COVID-19 as a pandemic, and in late March 2020 partial lockdown was ordered by the São Paulo state government. The aim of this study was to assess impacts on air quality in São Paulo - Brazil, during the partial lockdown implemented to provide social dista... |
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Descriptive characterization of sound levels in an environmental justice city before and during a global pandemic.
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| Many environmental justice communities face elevated exposures to multiple stressors, given biases in urban and environmental policy and planning. This paper aims to evaluate sound level exposure in a densely populated environmental justice city in close proximity to major roadways, a nearby airport and high levels of ... |
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The Effect of Jet Fuel Tax Changes on Air Transport, Employment, and the Environment in the US
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| This paper presents an analysis of the effects of jet fuel taxes on air traffic, employment and emissions using a difference-in-difference design These findings are relevant, as US airports identify how to respond to revenue shortfalls and support local employment in the recovery after Covid-19 Jet fuel tax cuts are co... |
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Spatial variation of fine particulate matter levels in Nairobi before and during the COVID-19 curfew: implications for environmental justice
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| The temporary decrease of fine particulate matter (PM2.5) concentrations in many parts of the world due to the COVID-19 lockdown spurred discussions on urban air pollution and health. However there has been little focus on sub-Saharan Africa, as few African cities have air quality monitors and if they do, these data ar... |
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How do pollutants change post-pandemic? Evidence from changes in five key pollutants in nine Chinese cities most affected by the COVID-19
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| Under the COVID-19 global pandemic, China has weakened the large-scale spread of the epidemic through lockdown and other measures. At the same time, with the recovery of social production activities, China has become the only country which achieves positive growth in 2020 in the major economies. It entered the post pan... |
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The Impact of the COVID-19 outbreak on climate change and air quality: Four country case studies
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| Non-technical summary To decrease the negative impacts of the coronavirus outbreak on human health, governments have implemented wide-ranging control measures. Moreover, they were urged to tackle a new challenge in energy policies to supply a new form of demand derived from new lifestyles of citizens and different ener... |
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No COVID-19 climate silver lining in the US power sector
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| Recent studies conclude that the global coronavirus (COVID-19) pandemic decreased power sector CO(2) emissions globally and in the United States. In this paper, we analyze the statistical significance of CO(2) emissions reductions in the U.S. power sector from March through December 2020. We use Gaussian process (GP) r... |
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Dynamics of Amphan Cyclone and associated changes in ocean, land meteorological and atmospheric parameters
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| The low-pressure system developed in the Bay of Bengal and the Andaman Sea during March-October, often forms tropical cyclones, depending upon the intensity widespread destruction occurs in the areas where landfall takes place along the Indian coastal region. On 20 May, 2020, tropical cyclone Amphan hit the Indian coas... |
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Insights for Air Quality Management from Modeling and Record Studies in Cuenca, Ecuador
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| On-road traffic is the primary source of air pollutants in Cuenca (2500 m a s l ), an Andean city in Ecuador Most of the buses in the country run on diesel, emitting high amounts of NOx (NO + NO2) and PM2 5, among other air pollutants Currently, an electric tram system is beginning to operate in this city, accompanied ... |
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City Scale Modeling of Ultrafine Particles in Urban Areas with Special Focus on Passenger Ferryboat Emission Impact
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| Air pollution by aerosol particles is mainly monitored as mass concentrations of particulate matter, such as PM(10) and PM(2.5). However, mass-based measurements are hardly representative for ultrafine particles (UFP), which can only be monitored adequately by particle number (PN) concentrations and are considered part... |
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Fomites and the environment did not have an important role in COVID-19 transmission in a Brazilian mid-sized city
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| It is not clear if COVID-19 can be indirectly transmitted. It is not possible to conclude the role of the environment in transmission of SARS-CoV-2 without studying areas in which people transit in great numbers. In this work we aimed to better understand the role of environment in the spread of COVID-19. We investigat... |
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Source Apportionment of Ambient Black Carbon during the COVID-19 Lockdown
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| Black carbon (BC) particles being emitted from mobile and stationary emission sources as a result of combustion activities have significant impacts on human health and climate change. A lot of social activities have been halted during the COVID-19 lockdowns, which has evidently enhanced the ambient and indoor air quali... |
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COVID-19 incidences and its association with environmental quality: A country-level assessment in India
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| This study explored the association between the five key air pollutants (Nitrogen Dioxide (NO2), Sulphur Dioxide (SO2), Particulate Matter (PM2.5, PM10), and Carbon Monoxide (CO)) and COVID-19 incidences in India. The COVID-19 confirmed cases, air pollution concentration and meteorological variables (temperature, wind ... |
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Ozone profile retrievals from TROPOMI: Implication for the variation of tropospheric ozone during the outbreak of COVID-19 in China
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| During the outbreak of the coronavirus disease 2019 (COVID-19) in China in January and February 2020, production and living activities were drastically reduced to impede the spread of the virus, which also caused a strong reduction of the emission of primary pollutants However, as a major species of secondary air pollu... |
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Isolating the impact of COVID-19 lockdown measures on urban air quality in Canada
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| We have investigated the impact of reduced emissions due to COVID-19 lockdown measures in spring 2020 on air quality in Canada's four largest cities: Toronto, Montreal, Vancouver, and Calgary. Observed daily concentrations of NO2, PM2.5, and O3 during a "pre-lockdown" period (15 February-14 March 2020) and a "lockdown"... |
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Comprehensive Study on Impact Assessment of Lockdown on Overall Ambient Air Quality amid COVID-19 in Delhi and its NCR, India
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| Indian government announced the complete lockdown from 25 March, 2020 for all outdoor activities across the country due to containment of COVID-19 This study is an attempt to assess the impacts of lockdown on ambient air quality in five cities of Indian National Capital Region including Delhi, Gurugram, Noida, Ghaziaba... |
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A Comparative Study to assess the Air quality of Ludhiana, India amid COVID-19
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| Air quality Index (AQI) is a tool which is implemented to assess the qualitative and quantitative status of air pollutants. Four distinctive pollutants;PM10, PM2.5, SO2 and NO2 were used to compare the prevailing ambient air quality in the study region-Ludhiana, the industrial city in the north Indian state of Punjab. ... |
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Impact of COVID-19 on PM(2.5) Pollution in Fastest-Growing Megacity Dhaka, Bangladesh
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| OBJECTIVE: The purpose of the research was to investigate and identify the impact of COVID-19 lockdown on fine particulate matter (PM(2.5)) pollution in Dhaka, Bangladesh by using ground-based observation data. METHODS: The research assessed air quality during the COVID-19 pandemic for PM(2.5) from January 1, 2017 to A... |
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Substantial nitrogen oxides emission reduction from China due to COVID-19 and its impact on surface ozone and particle pollution
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| A top-down approach was employed to estimate the influence of lockdown measures implemented during the COVID-19 pandemic on NOx emissions and subsequent influence on surface PM2 5 and ozone air quality in China The nation-wide NOx emission reduction of 53 4% due to the lockdown in 2020 quarter one in China may represen... |
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Characteristics of equivalent black carbon aerosols over Doon Valley in NW Indian Himalaya during COVID-19 lockdown 2020
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| Recently, black carbon (BC) has been identified as a potential transmitter for COVID-19 besides being responsible for climate change and serious health hazards. To mitigate the dreaded consequences of COVID-19 pandemic, the Government of India declared a nationwide lockdown on March 24, 2020. Accordingly, observations ... |
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Returning long-range PM(2.5) transport into the leeward of East Asia in 2021 after Chinese economic recovery from the COVID-19 pandemic
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| Changes in the aerosol composition of sulfate (SO(4)(2−)) and nitrate (NO(3)(−)) from 2012 to 2019 have been captured as a paradigm shift in the region downwind of China. Specifically, SO(4)(2−) dramatically decreased and NO(3)(−) dramatically increased over downwind locations such as western Japan due to the faster re... |
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Air pollution aggravating COVID-19 lethality? Exploration in Asian cities using statistical models
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| The present work estimates the increased risk of coronavirus disease (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 by establishing the linkage between the mortality rate in the infected cases and the air pollution, specifically Particulate Matters (PM) with aerodynamic diameters ≤ 10 µm and ≤ 2.5... |
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Watch out for trends: did ozone increased or decreased during the COVID-19 pandemic?
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| Restriction measures against COVID-19 caused the environmental panorama of cities to change, especially in relation to air pollution. This scenario of severe reduction in the emission of air pollutants led to a flurry of studies about their behavior during the pandemic. The vast majority of studies pointed to a decreas... |
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Unveiling the causes of reduction in troposphere NO 2in two cities of Morocco during COVID-19 lockdown
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| The paper presents a discussion on the identification of the source of troposphere NO 2concentration in two cities of Morocco, Casablanca and Rabat. The levels of NO 2during 2015–19 have been used as a baseline to analyse the change in the NO 2level during the COVID-19 induced lockdown in the cities of Morocco. The ana... |
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A Correlation among the COVID-19 Spread, Particulate Matters, and Angiotensin-Converting Enzyme 2: A Review
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| Air pollution (AP) is one of the leading causes of health risks because it causes widespread morbidity and mortality every year. Its impact on the environment includes acid rain and decreased visibility, but more importantly, it also has an impact on human health. The rise of COVID-19 demonstrates the cost of failing t... |
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Spatial and Temporal Distributions and Sources of Anthropogenic NMVOCs in the Atmosphere of China: A Review
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| As the key precursors of O(3), anthropogenic non-methane volatile organic compounds (NMVOCs) have been studied intensively. This paper performed a meta-analysis on the spatial and temporal variations of NMVOCs, their roles in photochemical reactions, and their sources in China, based on published research. The results ... |
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What is the relationship between the coronavirus crisis and air pollution in Tunisia?
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| ABSTRACT: Since the beginning of 2020, the COVID-19 pandemic has generated horror and panic around the world. Nevertheless, this terrible crisis is having a positive side effect: it is lowering pollution levels. The outbreak of the coronavirus has caused many governments to impose measures to slow the spread of the vir... |
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Nitrogen oxides (NO and NO(2)) pollution in the Accra metropolis: Spatiotemporal patterns and the role of meteorology
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| Economic and urban development in sub-Saharan Africa (SSA) may be shifting the dominant air pollution sources in cities from biomass to road traffic. Considered as a marker for traffic-related air pollution in cities, we conducted a city-wide measurement of NO(x) levels in the Accra Metropolis and examined their spatio... |
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Lessons learned and questions raised during and post-COVID-19 anthropopause period in relation to the environment and climate
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| In the first part, this work reports that during the global “anthropopause” period, that was imposed in March and April 2020 for limiting the spread of COVID-19, the concentrations of basic air pollutants over Europe were reduced by up to 70%. During May and June, the gradual lift of the stringent measures resulted in ... |
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The impact of COVID-19 pandemic on nitrogen dioxide levels in Nigeria
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| The Coronavirus disease (COVID-19) has been transmitted worldwide over a very short time after it originated in China in December 2019. In an attempt to control its spread and reduce its health impacts, several countries including those in the African continent imposed restrictive measures that was termed “lockdown”. T... |
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Monitoring IoT-based PM2.5 and CO2 Concentrations under a Policy of "Working from Home" in Telkom University, Bandung
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| The pandemic of Covid-19 detected for the first time in early March in Indonesia has been making people stay at home. It affects almost every sector, including higher education. Lecturer, staff, and students have been pushed to work and study from home. There are many approaches from the government, and the ultimate me... |
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Unexpected Impact of COVID-19 Lockdown on the Air Quality in the Metro Atlanta, USA Using Ground-based and Satellite Observations
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| We studied the impact of COVID-19 (coronavirus disease 2019) lockdown on the air quality over the Atlanta area using satellite and ground-based observations, meteorological reanalysis data and traffic information. Unlike other cities, we found the air quality has improved slightly over the Atlanta area during the 2020 ... |
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Enhanced secondary pollution offset reduction of primary emissions during COVID-19 lockdown in China
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| To control the spread of the 2019 novel coronavirus (COVID-19), China imposed nationwide restrictions on the movement of its population (lockdown) after the Chinese New Year of 2020, leading to large reductions in economic activities and associated emissions Despite such large decreases in primary pollution, there were... |
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Air quality improvement during triple-lockdown in the coastal city of Kannur, Kerala to combat Covid-19 transmission
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| The novel SARS-CoV-2 coronavirus that emerged in the city of Wuhan, China, last year has since become the COVID-19 pandemic across all continents. To restrict the spread of the virus pandemic, the Government of India imposed a lockdown from 25 March 2020. In India, Kannur district was identified as the first “hotspot” ... |
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Coronavirus pandemic reduced China’s CO(2) emissions in short-term, while stimulus packages may lead to emissions growth in medium- and long-term
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| Coronavirus has confined human activities, which caused significant reductions in coal, oil, and natural gas consumptions in China since January of 2020. We compile industrial, transport, and construction data to estimate the reductions in energy-related CO(2) emissions during the first quarter of 2020 in China. Our re... |
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Ozone pollution in the North China Plain spreading into the late-winter haze season
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| Surface ozone is a severe air pollution problem in the North China Plain, which is home to 300 million people. Ozone concentrations are highest in summer, driven by fast photochemical production of hydrogen oxide radicals (HOx) that can overcome the radical titration caused by high emissions of nitrogen oxides (NOx) fr... |
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Unfolding Water Quality Status During COVID-19 Lockdown for The Highly Polluted Santiago River in Jalisco, Mexico
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| Santiago River is one of the most contaminated waterways in Mexico and its surface water quality evaluation during COVID-19 outbreak is critical to assess the changes and improvements, if any, from the nationwide lockdown (April-May 2020). Hence, the data for 12 water quality parameters from 13 sampling stations during... |
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AiR: An Augmented Reality Application for Visualizing Air Pollution
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| In order to effectively combat Air Pollution, it is necessary for the government and the community to work together. Easily comprehensible visualizations can play a major role in drawing public attention and spreading awareness about seemingly intangible air pollution. Considering the widespread usage of Android-based ... |
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Cumulative effects of particulate matter pollution and meteorological variables on the risk of influenza-like illness in Bialystok, Poland
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| The cold season is usually accompanied by an increased incidence of respiratory infections and increased air pollution from combustion sources. As we are facing the growing numbers of COVID-19 cases caused by the novel SARS-CoV-2 coronavirus, an understanding of the impact of air pollutants and meteorological variables... |
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Sustainable design of courtyard environment: From the perspectives of airborne diseases control and human health
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| Courtyards have functioned as an effective passive architectural design strategy for various climate conditions, especially popular in hot-humid climates. Sustainable and delicate designs are necessary to create safe, healthy and comfortable courtyard environment. Most of the available literature focused on thermal com... |
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Commercial-aircraft-based observations for nwp: Global coverage, data impacts, and covid-19
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| Weather observations from commercial aircraft constitute an essential component of the global observing system and have been shown to be the most valuable observation source for short-range numerical weather prediction (NWP) systems over North America However, the distribution of aircraft observations is highly irregul... |
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Effects of COVID-19 lockdown on global air quality and health
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| The COVID-19 pandemic has put much of the world into lockdown, as one unintended upside to this response, the air quality has been widely reported to have improved worldwide. Existing studies examine the environmental effect of lockdowns at a city- or country-level, few examines it from a global perspective. Using a no... |
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An Italian individual-level data study investigating on the association between air pollution exposure and Covid-19 severity in primary-care setting
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| BACKGROUND: Several studies have been focusing on the potential role of atmospheric pollutants in the diffusion and impact on health of Covid-19. This study's objective was to estimate the association between ≤10 µm diameter particulate matter (PM10) exposure and the likelihood of experiencing pneumonia due to Co... |
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Anomalous Behaviour of Ozone under COVID-19 and Explicit Diagnosis of O3-NOx-VOCs Mechanism
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| Air pollution is linked to higher rates of human mortality especially those infected with COVID 19. Ozone is a harmful pollutant and is responsible for many health issues. However, some reports suggest that ozone is a strong disinfectant, and can kill the viruses. We hereby, report on the vulnerability of ozone due to ... |
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Weather Parameters and COVID-19: A Correlational Analysis
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| OBJECTIVES: To assess the effect of ambient temperature, humidity and wind speed on disease occurrence in Delhi, India. DATA AND METHODS: Data regarding daily corona cases, temperature, humidity, wind speed, doubling time and basic reproduction number (R0) was retrieved from online sources. Pearson's coefficient was us... |
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Global Changes in Secondary Atmospheric Pollutants during the 2020 COVID-19 Pandemic
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| Abstract We use the global Community Earth System Model to investigate the response of secondary pollutants (ozone O3, secondary organic aerosols SOA) in different parts of the world in response to modified emissions of primary pollutants during the COVID-19 pandemic We quantify the respective effects of the reductions... |
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Tropospheric NO(2) and O(3) Response to COVID‐19 Lockdown Restrictions at the National and Urban Scales in Germany
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| This study estimates the influence of anthropogenic emission reductions on nitrogen dioxide ([Formula: see text]) and ozone ([Formula: see text]) concentration changes in Germany during the COVID‐19 pandemic period using in‐situ surface and Sentinel‐5 Precursor TROPOspheric Monitoring Instrument (TROPOMI) satellite col... |
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Environmental implications of reduced electricity consumption in Wuhan during COVID-19 outbreak: A brief study
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| Due to the COVID-19 outbreak, Wuhan was locked down from 23 January 2020 to 8 April 2020, a total of 76 days. It is well known that the electricity consumption is a direct reflection of human activity. During the lockdown of Wuhan, most of human activities were forbidden. The reduction in human activity would inevitabl... |
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School Children Exposure to Low Indoor Air Quality in Classrooms during Covid-19 Pandemic: Results of a Pilot Study
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| BACKGROUND: Indoor air quality (IAQ) in classrooms affects children's health and academic perfor-mance. The aim of this pilot study was to determine IAQ in elementary schools different in their inter-nal and external characteristics, in settings of COVID-19 epidemics. METHODS: IAQ parameters: fine particulate matter (P... |
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Access to clean cooking services in energy and emission scenarios after COVID-19
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| Slow progress in expanding clean cooking access is hindering progress on health, gender, equity, climate and air quality goals globally. Despite a rising population share with clean cooking access, the number of cooking poor remains stagnant. In this study we explored clean cooking access until 2050 under three referen... |
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