Co-variance nexus between COVID-19 mortality, humidity, and air quality index in Wuhan, China: New insights from partial and multiple wavelet coherence

Liang

J Environ Health Sci Engineer

et al. 2020

Background COVID-19 is a global pandemic. The purpose of this study is to explore correlations between the novel coronavirus (COVID-19) and meteorological indicators from cities across China. Methods We collected daily data of the cumulative number of infected, recovered and death cases, and the meteorological indicators including average temperature, wind speed, relative humidity, precipitation and air quality index (AQI) from 12 cities in China during the period of Jan 23 to Feb 22, 2020. Correlation tests were chosen for data analysis. Results The average temperature and AQI showed significant association with the mortality rate of COVID-19. The mortality rate was not correlated with wind speed, relative humidity or precipitation. Meanwhile, higher average temperatures and more precipitation were beneficial for the recovery rate of COVID-19, but the recovery rate was not correlated with wind speed, relative humidity or AQI. Conclusions Our study provides a new basis for correlations between COVID-19, meteorological indicators and air quality index, which can help authorities to combat COVID-19.

Section: Introductionmentioning

confidence: 99%

Correlations between Meteorological Indicators, Air Quality and the COVID-19 Pandemic in 12 Cities across China

Liang

J Environ Health Sci Engineer

et al. 2020

“…The tourism sector will be badly damaged, and if COVID-19 does not finish by the end of this summer, Turkey will lose the place of 50 million visitors and $34.5 billion income (Institute TTS 2020a ). The only positive impact of COVID-19 is the improved air environment, as suggested by recent research (Gautam 2020 ; Shahzad et al 2020 ; Fareed et al 2020 ). In this regard, Gautam ( 2020 ) denoted that due to COVID-19, global air pollution is significantly reduced and the natural environment gains additional benefits.…”

Section: Literature Reviewmentioning

confidence: 80%

Impact of novel coronavirus (COVID-19) on daily routines and air environment: evidence from Turkey

Ali

Yılmaz

Fareed

et al. 2020

Air Qual Atmos Health

Self Cite

Turkish people are facing several problems because of the novel coronavirus (COVID-19), as the pandemic has brought about drastic changes to their daily routines. This study mainly investigates the impact of this pandemic on the daily routines of Turkish. It also unveils how COVID-19 affects the air environment. The adopted methods for data collection are based on open-ended questions and Facebook interviews as per recommended by QSR-International (2012). The sample of this study comprises of Turkish students as well as professional workers. The findings of the research show that there are eighteen different results of COVID-19 that have been identified according to the Turkish people’s daily routines. Results reveal that increasing unemployment, decrease in air contamination, high stress and depression, a slowdown in the economic growth, and the tourism industry are profoundly affected due to the COVID-19 in Turkey. Furthermore, on the one hand, the consequences of the pandemic are segregated into social problems and psychological issues in daily routines. On the other hand, they have shown a positive impact on the air environment. This study concludes that, amid the COVID-19 pandemic, the lives of the people in Turkey are subject to deterioration, while the air environment of Turkey is gradually improving. Electronic supplementary material The online version of this article (10.1007/s11869-020-00943-2) contains supplementary material, which is available to authorized users.

“…The role of climate variables on the daily new cases of COVID-19 related deaths was explored in the origin city of the pandemic i.e. Wuhan and found a significant correlation between AQI, humidity, and mortality (Fareed et al, 2020). Similarly, Zhang et al (2020) threw light on the total effect of ambient temperature and air quality on COVID-19 transmission in China and indicated that rising temperature restricted deterioration of air quality which in turn reduced disease transmission.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Air Quality, Atmospheric Variables and Spread of COVID-19 in Delhi (India): An Analysis

Dutta

Jinsart

2021

Aerosol Air Qual. Res.

Based on a time series analysis of the criteria pollutants, meteorological parameters, and COVID-19 positive cases, this paper explores the impact of epidemic prevention and control actions on air quality for five different periods of COVID-19 outbreak in Delhi, India. The study found that under the epidemic control measure during 11 May-19 June 2020, the average concentrations of atmospheric air pollutants PM2.5, PM10, NO2, and CO were reduced to 42.15 µg m-3 , 128.68 µg m-3 , 27.31 ppb, and 0.83 ppm respectively, and were 73.85%, 46.48%, 63.43%, and 50.18% lower than the pre-COVID-19 level of January 2020, respectively. The steep fall of PM2.5, NO2, and CO was due to a drastic reduction in vehicular emission, but PM10 did not fall below the National Ambient Air Quality Standard. Between January 2020 to 11 May-19 June 2020 period, the pollutants O3 and SO2 increased significantly by 217.33% and 57.58 % respectively. The rise of SO2 in Delhi was due to long-distance transfer, power plant emissions, and biomass burning. The sharp increase of O3 happened due to accumulation in the atmosphere. During the peak COVID-19 phase (9 April-10 May 2020) Delhi had unprecedented improved AQI classes of II and III only. However, the pivotal pollutants in terms of their cumulative contribution to the AQI classes were PM10 and O3. Low RH and low-temperature situations exhibited positive correlations with the new COVID-19 infection cases in Delhi. Comparatively lower NO2 level in the air demonstrated a significant negative correlation with new COVID-19 cases while average SO2 concentration in the air, when increased to 24.05 ppb, showed a negative correlation with new COVID-19 cases in Delhi. This study indicated a possibility of O3 exhibiting a positive correlation with new COVID-19 cases under the condition of comparatively low temperature and low humidity.