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Article: Rising surface ozone due to anthropogenic activities and its impact on COVID-19 related deaths in Delhi, India.

Chauhan, Akshansha / Gupta, Sharad Kumar / Liou, Yuei-An

2023 Volume 9, Issue 4, Page(s) e14975

Abstract: The rapidity and global spread of the COVID-19 pandemic have left several vital questions in the research community requiring coordinated investigation and unique perspectives to explore the relationship between the spread of disease and air quality. ... ...

Abstract	The rapidity and global spread of the COVID-19 pandemic have left several vital questions in the research community requiring coordinated investigation and unique perspectives to explore the relationship between the spread of disease and air quality. Previous studies have focused mainly on the relation of particulate matter concentration with COVID-19-related mortalities. In contrast, surficial ozone has not been given much attention as surface ozone is a primary air pollutant and directly impacts the respiratory system of humans. Hence, we analyzed the relationship between surface ozone pollution and COVID-19-related mortalities. In this study, we have analyzed the variability of various atmospheric pollutants (particulate matter (PM
Language	English
Publishing date	2023-03-29
Publishing country	England
Document type	Journal Article
ZDB-ID	2835763-2
ISSN	2405-8440
ISSN	2405-8440
DOI	10.1016/j.heliyon.2023.e14975
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Correction to: Dynamics of land, ocean, and atmospheric parameters associated with Tauktae cyclone.

Kumar, Rajesh / Pippal, Prity Singh / Chauhan, Akshansha / Singh, Ramesh P / Kumar, Ramesh / Singh, Atar / Singh, Jagvir

Environmental science and pollution research international

2024 Volume 31, Issue 10, Page(s) 16106

Language	English
Publishing date	2024-01-17
Publishing country	Germany
Document type	Published Erratum
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-024-32016-7
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Article ; Online: Rising surface ozone due to anthropogenic activities and its impact on COVID-19 related deaths in Delhi, India

Akshansha Chauhan / Sharad Kumar Gupta / Yuei-An Liou

Heliyon, Vol 9, Iss 4, Pp e14975- (2023)

2023

Abstract	The rapidity and global spread of the COVID-19 pandemic have left several vital questions in the research community requiring coordinated investigation and unique perspectives to explore the relationship between the spread of disease and air quality. Previous studies have focused mainly on the relation of particulate matter concentration with COVID-19-related mortalities. In contrast, surficial ozone has not been given much attention as surface ozone is a primary air pollutant and directly impacts the respiratory system of humans. Hence, we analyzed the relationship between surface ozone pollution and COVID-19-related mortalities. In this study, we have analyzed the variability of various atmospheric pollutants (particulate matter (PM2.5 and PM10), Nitrogen dioxide (NO2), Carbon monoxide (CO), and Ozone) in the National Capital Region (NCR) of India during 2020–2021 using station data and investigated the relationship of the air-quality parameters with the COVID-19 related deaths. In northern parts of India, the concentration of particulate matter (PM2.5 and PM10), Nitrogen dioxide (NO2), Carbon monoxide (CO), and Ozone remain high during the pre- and post-monsoon seasons due to dust loading and crop residue burning (after winter wheat in April & summer rice in November). The westerly wind brings the polluted airmass from western and northwestern parts to Delhi and National Capital Region during April–June and October–November, and meteorological conditions help raise the concentration of these pollutants. Due to long solar hours and high CO concentrations, the ozone concentration is higher from April to June and September. While comparing major air quality parameters with COVID-19-related deaths, we found a good relationship between surface ozone and COVID-19 mortality in Delhi. We also observed a time lag relationship between ozone concentration and mortality in Delhi, so the exposure to Ozone in a large population of Delhi may have augmented the rise of COVID-19-related deaths. The analysis suggested that ...
Keywords	COVID-19 mortality ; Ozone ; Air quality ; Dust loading ; Crop reside burning ; Science (General) ; Q1-390 ; Social sciences (General) ; H1-99
Subject code	333
Language	English
Publishing date	2023-04-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Influence of major typhoons on ocean, atmosphere and air quality of Northwest Pacific during August 2020

Chauhan, Akshansha / Liou, Yuei-An

Atmospheric environment. 2022 Feb. 15, v. 271

2022

Abstract: Tropical storms (TSs)/Typhoons (TYs) in the Northwest Pacific (NWP) region are one of the most devastating natural hazards, which cause large-scale impacts on human life and infrastructure. In August 2020, a total of 9 tropical storms were identified by ... ...

Abstract	Tropical storms (TSs)/Typhoons (TYs) in the Northwest Pacific (NWP) region are one of the most devastating natural hazards, which cause large-scale impacts on human life and infrastructure. In August 2020, a total of 9 tropical storms were identified by International Best Track Archive for Climate Stewardship (IBTrACS) in the NWP region. These TSs/TYs made their landfall over the coastal parts of China, North Korea, and South Korea, while none of them made their landfall over Taiwan. These conditions were unique in recent years and induced drought conditions in Taiwan during 2020. We have carried out a three-dimensional analysis of oceanic, atmospheric, and meteorological parameters for the evaluation of changes associated with typhoons during August 2020. The model, satellite, and ground observations data have been used for the assessment of the impact of these TS/TYs on the ocean, atmosphere, and air quality. The rise in ocean temperature (1 °C–2 °C) was observed even at the depth of 100 m. Strong upwelling of the ocean water in the NWP originated a change in the mixed layer depth and also has affected the salinity in South China, East China, and the Philippines Sea. The strong convective forces during the storm conditions produced a prominent rise in CO and Ozone concentration. These typhoons also affected the air quality of Taiwan during August 2020. The transboundary air pollutants triggered the enhancement in particulate matter (PM₁.₀ and PM₂.₅) and surface ozone over Taiwan, which resulted in major health hazards to a large population.
Keywords	Philippines ; air ; air quality ; climate ; drought ; environment ; infrastructure ; models ; ozone ; particulates ; salinity ; satellites ; seawater ; water temperature ; China ; North Korea ; South Korea ; Taiwan
Language	English
Dates of publication	2022-0215
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	216368-8
ISSN	0004-6981 ; 1352-2310
ISSN	0004-6981 ; 1352-2310
DOI	10.1016/j.atmosenv.2021.118923
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Rising surface ozone due to anthropogenic activities and its impact on COVID-19 related deaths in Delhi, India

Chauhan, Akshansha / Gupta, Sharad Kumar / Liou, Yuei-An

Heliyon. 20232023 Apr. 29, Mar. 29, v. 9, no. 4 p.e14975-

2023

Abstract	The rapidity and global spread of the COVID-19 pandemic have left several vital questions in the research community requiring coordinated investigation and unique perspectives to explore the relationship between the spread of disease and air quality. Previous studies have focused mainly on the relation of particulate matter concentration with COVID-19-related mortalities. In contrast, surficial ozone has not been given much attention as surface ozone is a primary air pollutant and directly impacts the respiratory system of humans. Hence, we analyzed the relationship between surface ozone pollution and COVID-19-related mortalities. In this study, we have analyzed the variability of various atmospheric pollutants (particulate matter (PM₂.₅ and PM₁₀), Nitrogen dioxide (NO₂), Carbon monoxide (CO), and Ozone) in the National Capital Region (NCR) of India during 2020-2021 using station data and investigated the relationship of the air-quality parameters with the COVID-19 related deaths. In northern parts of India, the concentration of particulate matter (PM₂.₅ and PM₁₀), Nitrogen dioxide (NO₂), Carbon monoxide (CO), and Ozone remain high during the pre- and post-monsoon seasons due to dust loading and crop residue burning (after winter wheat in April & summer rice in November). The westerly wind brings the polluted airmass from western and northwestern parts to Delhi and National Capital Region during April-June and October-November, and meteorological conditions help raise the concentration of these pollutants. Due to long solar hours and high CO concentrations, the ozone concentration is higher from April to June and September. While comparing major air quality parameters with COVID-19-related deaths, we found a good relationship between surface ozone and COVID-19 mortality in Delhi. We also observed a time lag relationship between ozone concentration and mortality in Delhi, so the exposure to Ozone in a large population of Delhi may have augmented the rise of COVID-19-related deaths. The analysis suggested that ozone has a significant relationship with COVID-19 related mortality in Delhi in comparison to other parameters.
Keywords	COVID-19 infection ; air pollutants ; air quality ; carbon monoxide ; crop residues ; disease transmission ; mortality ; nitrogen dioxide ; ozone ; particulates ; pollution ; respiratory system ; rice ; summer ; wind direction ; winter wheat ; India ; COVID-19 mortality ; Dust loading ; Crop reside burning
Language	English
Dates of publication	2023-0329
Publishing place	Elsevier Ltd
Document type	Article ; Online
Note	Use and reproduction
ZDB-ID	2835763-2
ISSN	2405-8440
ISSN	2405-8440
DOI	10.1016/j.heliyon.2023.e14975
Database	NAL-Catalogue (AGRICOLA)

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Article: Impact of lockdown on air quality in India during COVID-19 pandemic.

Singh, Ramesh P / Chauhan, Akshansha

Air quality, atmosphere, & health

2020 Volume 13, Issue 8, Page(s) 921–928

Abstract: First time in India, total lockdown was announced on 22 March 2020 to stop the spread of COVID-19 and the lockdown was extended for 21 days on 24 March 2020 in the first phase. During the total lockdown, most of the sources for poor air quality were ... ...

Abstract	First time in India, total lockdown was announced on 22 March 2020 to stop the spread of COVID-19 and the lockdown was extended for 21 days on 24 March 2020 in the first phase. During the total lockdown, most of the sources for poor air quality were stopped in India. In this paper, we present an analysis of air quality (particulate matter-PM
Keywords	covid19
Language	English
Publishing date	2020-07-07
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	2424084-9
ISSN	1873-9326 ; 1873-9318
ISSN (online)	1873-9326
ISSN	1873-9318
DOI	10.1007/s11869-020-00863-1
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Article ; Online: Decline in PM

Chauhan, Akshansha / Singh, Ramesh P

Environmental research

2020 Volume 187, Page(s) 109634

Abstract: The COVID-19 started from Wuhan city in China, slowly spread across the globe after December 2019. Due to movement of people from one city to other cities, one country to other countries, infection spreads and COVID-19 became a pandemic. Efforts were ... ...

Abstract	The COVID-19 started from Wuhan city in China, slowly spread across the globe after December 2019. Due to movement of people from one city to other cities, one country to other countries, infection spreads and COVID-19 became a pandemic. Efforts were made at local, regional and national levels to lockdown the movement of people and to keep infected one in quarantine or isolation to stop the spread of COVID-19. The traffic, market and small industries were closed, as a result pronounced decline in the concentrations of particulate matters (PM) were observed. Normally these sources contribute to the high concentrations of particulate matters (PM
MeSH term(s)	Air Pollutants/analysis ; Air Pollution/analysis ; Beijing ; Betacoronavirus ; COVID-19 ; Cities ; Coronavirus Infections ; Environmental Monitoring ; Humans ; Italy ; Los Angeles ; New York ; Pandemics ; Particulate Matter/analysis ; Pneumonia, Viral ; Rome ; SARS-CoV-2 ; Spain
Chemical Substances	Air Pollutants ; Particulate Matter
Keywords	covid19
Language	English
Publishing date	2020-05-05
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	205699-9
ISSN	1096-0953 ; 0013-9351
ISSN (online)	1096-0953
ISSN	0013-9351
DOI	10.1016/j.envres.2020.109634
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Article ; Online: Dynamics of land, ocean, and atmospheric parameters associated with Tauktae cyclone.

Kumar, Rajesh / Pippal, Prity Singh / Chauhan, Akshansha / Singh, Ramesh P / Kumar, Ramesh / Singh, Atar / Singh, Jagvir

Environmental science and pollution research international

2024 Volume 31, Issue 8, Page(s) 12561–12576

Abstract: During the pre- and post-monsoon season, the eastern and western coasts are highly vulnerable to cyclones. The tropical cyclone "Tauktae" formed in the Arabian Sea on 14 May 2021 and moved along the west coast of India, and landfall occurred on 17 May ... ...

Abstract	During the pre- and post-monsoon season, the eastern and western coasts are highly vulnerable to cyclones. The tropical cyclone "Tauktae" formed in the Arabian Sea on 14 May 2021 and moved along the west coast of India, and landfall occurred on 17 May 2021. During the cyclone, the maximum wind speed was 220 km/h with a pressure of 935 mb affecting meteorological, atmospheric parameters, and weather conditions of the northern and central parts of India causing devastating damage. Analysis of satellite, Argo, and ground data show pronounced changes in the oceanic, atmospheric, and meteorological parameters associated during the formation and landfall of the cyclone. During cyclone generation (before landfall), the air temperature (AT) was maximum (30.51 °C), and winds (220 km/h) were strong with negative omega values (0.3). The relative humidity (RH) and rainfall (RF) were observed to be higher at the location of the cyclone formation in the ocean and over the landfall location, with an average value of 81.28% and 21.45 mm/day, respectively. The concentration of total column ozone (TCO), CO volume mixing ratio (COVMR), H
MeSH term(s)	Cyclonic Storms ; Oceans and Seas ; Weather ; Air Pollution/analysis ; Wind ; Aerosols/analysis ; Environmental Monitoring/methods
Chemical Substances	Aerosols
Language	English
Publishing date	2024-01-05
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-023-31659-2
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Article ; Online: Quasi-coseismic variations and geosphere coupling associated with the strong 2023 Turkey earthquakes.

Jing, Feng / Zhang, Lu / Singh, Ramesh P / Chauhan, Akshansha / Jiang, Meng

The Science of the total environment

2023 Volume 907, Page(s) 167963

Abstract: On 6 February 2023, two massive shallow earthquakes of Mw 7.8 and Mw 7.5 occurred successively in Turkey. Unlike earlier studies on pre-seismic anomalous signals, here we focus on the co-seismic changes in ocean, land, and atmospheric parameters ... ...

Abstract	On 6 February 2023, two massive shallow earthquakes of Mw 7.8 and Mw 7.5 occurred successively in Turkey. Unlike earlier studies on pre-seismic anomalous signals, here we focus on the co-seismic changes in ocean, land, and atmospheric parameters associated with these two earthquakes. The quasi-coseismic variations have been clearly observed in ocean, atmosphere, and snow parameters from satellite and reanalysis datasets. Our results show a decline in the seawater temperature and salinity, and enhancement in the chlorophyll-a concentration in the eastern Mediterranean Sea associated with the earthquakes. Over the epicentral region, the total ozone column and snowfall have been observed to increase with the occurrence of earthquakes. After a detailed analysis of the hourly parameters (atmospheric pressure, air temperature, relative humidity, and wind speed), we found the atmospheric pressure variation caused by the ground motion of seismic waves is the possible reason for the co-seismic changes. Based on the results discussed in this paper, a model of multi-geosphere co-seismic response associated with the 2023 Turkey events is proposed. Additionally, our results show that the crustal motion in the high mountain region within the earthquake preparation zone could be more sensitive prior to the earthquake due to the enhancement of electric field as suggested by the theory of positive holes.
Language	English
Publishing date	2023-10-20
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2023.167963
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Article ; Online: Decline in PM2.5 concentrations over major cities around the world associated with COVID-19

Chauhan, Akshansha / Singh, Ramesh P.

Environmental Research

2020 Volume 187, Page(s) 109634

Keywords	Biochemistry ; General Environmental Science ; covid19
Language	English
Publisher	Elsevier BV
Publishing country	us
Document type	Article ; Online
ZDB-ID	205699-9
ISSN	1096-0953 ; 0013-9351
ISSN (online)	1096-0953
ISSN	0013-9351
DOI	10.1016/j.envres.2020.109634
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