Identifying Micro-Level Pollution Hotspots Using Sentinel-5P for the Spatial Analysis of Air Quality Degradation in the National Capital Region, India

Sustainability, Journal Year: 2025, Volume and Issue: 17(5), P. 2241 - 2241

Published: March 4, 2025

Rapid urbanization and industrialization have significantly impacted the air quality in India’s National Capital Region (NCR), posing severe environmental public health challenges. This study aims to identify micro-level pollution hotspots assess degradation NCR. integrates Sentinel-5P satellite data with ground station measurements. Geographic Information System (GIS) techniques regression analysis are employed refine validate satellite-derived across Analysis reveals variable levels NCR, significant concentrations of nitrogen dioxide (NO2) East North-East, carbon monoxide (CO) Central region. Aerosol Index identifies North-East as critical due industrial activities construction dust. Particulate matter often exceed national standards during colder months, particulate (PM2.5) (PM10) reaching up 300 µg/m3 350 µg/m3, respectively. Ground-based confirmed high ozone (O3) North-West, 0.125 ppm, emphasizing impact vehicular emissions. The integration imagery provided a comprehensive view spatial distribution pollutants, highlighting areas for targeted interventions. findings underscore need sustainable urban planning stricter emission controls mitigate Enhanced monitoring control strategies essential address identified hotspots, particularly East, regions.

Language: Английский

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Temporal Dynamics and Long-Term Trends in Aerosol Optical Properties over Two Sites of Indo Gangetic Plains (IGP): Insights from AERONET Observations

Atmosphere, Journal Year: 2025, Volume and Issue: 16(3), P. 321 - 321

Published: March 11, 2025

This study presents the longest time series of aerosol optical properties and Precipitable Water Vapor (PW) from two AERONET sites in Indo-Gangetic Plains (IGP). Analyzing 22 years data (2001–2022) Kanpur 16 (2007–2023) Gandhi College, focuses on Aerosol Optical Depth (AOD), Ångström Exponent (α), Single Scattering Albedo (SSA), (PW). Significant variability is observed across monthly, seasonal, annual scales. The highest mean AOD500 values, coupled with higher α440–870 during post-monsoon winter, indicate dominance fine-mode aerosols. A decrease SSA wavelength these seasons further highlights absorbing nature aerosols, driven by fossil fuels biomass burning. In contrast, summer pre-monsoon have relatively lower AOD500, lowest α440–870, increased wavelength, suggesting coarse-mode scattering dust PW exhibits a seasonal cycle, reaching its peak monsoon due to moisture transport Arabian Sea Bay Bengal, then decreasing as drier conditions prevail. Long-term trends reveal increasing concentrations, rising 18% at 29% faster loading latter. Sub-period analysis indicates slowdown increase 2012–2023 Kanpur, indicating potential stabilization post-industrialization, while College’s more pronounced underscores growing impact fine aerosols rural IGP areas. shows sustained increase, though slower rate recent years, dominant College has transitioned moderate increases declines longer wavelengths, enhanced At decline reduces atmospheric moisture, limiting wet scavenging likely contributing rise especially seasons. Our findings highlight evolving sources IGP, stabilizing areas like seeing continued pollution.

Language: Английский

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Air pollution mitigation and suspended particulate matter retention potential of selected plant species across seasonal variation in the urban area

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: 31(32), P. 45035 - 45054

Published: July 3, 2024

Language: Английский

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Changes in Near-Surface and Columnar Aerosol Loading Over a Rural Site During COVID-19 Pandemic

Published: Jan. 1, 2025

Language: Английский

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Three-year black carbon aerosol synthesis over a pristine location surrounded by hillocks in Haryana state, India

Heliyon, Journal Year: 2024, Volume and Issue: 10(3), P. e25128 - e25128

Published: Jan. 26, 2024

The three-year Black Carbon (BC) aerosol measurements made during 2020, 2021, and 2022 over a rural location, namely, Panchgaon, surrounded by Aravali hillocks (elevation of about 400–600 m) have been analyzed with an aim to determine their optical radiative characteristics, seasonal long-term variations in mass concentration. affinity between these parameters associated pollutants planetary boundary layer height (PBLH), affected the orography, delineate role concentration changes time investigated. coincident OPAC (Optical Properties Aerosols Clouds) Model-derived depth (AOD), single scattering albedo (SSA) compared observed BC concentration, also synchronous satellite measurements. year-to-year variability analysis data reveals that rate increase is high. was low due reasons explained. It implies at study site depends on source strength modulated valley-driven meteorology. Added, percentage departures show positive values (higher concentration) morning evening hours, which could be more anthropogenic activities while it shows negative afternoon hours lower heights. force exerted radiation aerosols bottom atmosphere (BOA), (ATM) are almost equal magnitude negative, top-of-the-atmosphere (TOA) smaller positive, indicating region cools BOA warms ATM TOA, indirectly dominant long-range transport phenomenon higher levels as surface level.

Language: Английский

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Variability in air quality, ozone formation potential by VOCs, and associated air pollution attributable health risks for Delhi's inhabitants

Environmental Science Atmospheres, Journal Year: 2024, Volume and Issue: 4(8), P. 897 - 910

Published: Jan. 1, 2024

The present long-term study has been conducted with dual objectives: firstly, to monitor the spatio-temporal variation of ambient air quality parameters and secondly, evaluate impact pollutants on Delhi population.

Language: Английский

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Assessment of metals and metalloids agglutinated to airborne suspended particulate matter in selected plant species during the pre-and post-monsoon in the urban area

Environmental Pollution, Journal Year: 2024, Volume and Issue: 356, P. 124300 - 124300

Published: June 5, 2024

Language: Английский

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