Multi-platform observations and constraints reveal overlooked urban sources of black carbon in Xuzhou and Dhaka

Communications Earth & Environment, Journal Year: 2025, Volume and Issue: 6(1)

Published: Jan. 20, 2025

Language: Английский

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Optical and physical characteristics of aerosols over Asia: AERONET, MERRA-2 and CAMS

Atmospheric Environment, Journal Year: 2024, Volume and Issue: 326, P. 120470 - 120470

Published: March 18, 2024

Language: Английский

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Unveiling global land fine- and coarse-mode aerosol dynamics from 2005 to 2020 using enhanced satellite-based monthly inversion data

Environmental Pollution, Journal Year: 2024, Volume and Issue: 348, P. 123838 - 123838

Published: March 21, 2024

Language: Английский

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Radiative forcing bias calculation based on COSMO (Core-Shell Mie model Optimization) and AERONET data

npj Climate and Atmospheric Science, Journal Year: 2023, Volume and Issue: 6(1)

Published: Nov. 18, 2023

Abstract Direct radiative forcing (DRF) of aerosols is driven by aerosol concentration, size, and mixing state, solar radiation. This work introduces Core-Shell Mie model optimization (COSMO) to compute top the atmosphere (TOA) based on inversely constrained black carbon (BC) size state from AERONET, over two rapidly developing areas: Lumbini Taihu. COSMO has both, a less negative TOA than AERONET wider range variability, with mean standard deviation difference between being 13 ± 8.1 W m − 2 at 16 12 −2 These differences are particle aging size-resolved BC emissions, up 17.9% cases warmer maximum TOA, 1.9% total possible show net-warming (TOA > 0). A linearized correction deduced which can be immediately implemented climate models, suggested ranges observations made for future campaigns. Given that bias uncertainty larger locally emitted GHGs, active consideration necessary reduce in areas.

Language: Английский

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Aerosol Optical Properties and its radiative effects over two topographically different locations of the Indian Himalayan Region

Journal of Atmospheric and Solar-Terrestrial Physics, Journal Year: 2025, Volume and Issue: 269, P. 106487 - 106487

Published: March 1, 2025

Language: Английский

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The Himalayas in the Anthropocene

Published: Jan. 1, 2024

This chapter provides an overview of the Himalayas in Anthropocene era, which is characterized by significant human impacts on environment. The Himalayas, one world's most ecologically sensitive and biodiverse regions, are facing various environmental challenges, including climate change, deforestation, land-use change. reviews scientific literature effects activities Himalayan region, ecosystems, water resources, biodiversity. also discusses importance as a global hotspot for biodiversity conservation challenges protecting this unique fragile ecosystem face growing demands. identifies five key themes that characterize Himalayas: (1) (2) change forest degradation, (3) resources hydrology, (4) conservation, (5) wellbeing. These reflect interconnected complex nature Himalayas' need integrated holistic approaches to address them. emphasizes interdisciplinary research collaboration among scientists, policymakers, local communities develop effective strategies mitigating region. In conclusion, era highlights these challenges. critical region wellbeing, it essential balance needs with sustainability. underscores addressing region's

Language: Английский

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Seasonal variation of particle number concentration in a busy urban street with exposure assessment and deposition in human respiratory tract

Chemosphere, Journal Year: 2024, Volume and Issue: unknown, P. 143470 - 143470

Published: Oct. 1, 2024

Language: Английский

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Variability of nocturnal aerosol optical properties in China and correlations with meteorological variables during 2003–2022

Atmospheric Environment, Journal Year: 2024, Volume and Issue: 325, P. 120457 - 120457

Published: March 11, 2024

Language: Английский

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Insights into the morphology, composition, and sources of atmospheric particulate matter on Mount Qomolangma (Everest)

Journal of Environmental Sciences, Journal Year: 2024, Volume and Issue: 155, P. 889 - 900

Published: June 13, 2024

Language: Английский

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Changing optical properties of black carbon and brown carbon aerosols during long-range transport from the Indo-Gangetic Plain to the equatorial Indian Ocean

Atmospheric chemistry and physics, Journal Year: 2024, Volume and Issue: 24(20), P. 11911 - 11925

Published: Oct. 24, 2024

Abstract. Atmospheric aerosols strongly influence the global climate through their light absorption properties (e.g., black carbon (BC) and brown (BrC)) scattering sulfate). This study presents simultaneous measurements of ambient-aerosol chemical composition obtained at three large-footprint southern Asian receptor sites during South Pollution Experiment (SAPOEX) from December 2017 to March 2018. The BC mass cross section (BC-MAC678) values increased 3.5 ± 1.3 Bangladesh Climate Observatory Bhola (BCOB), located exit outflow Indo-Gangetic Plain, 6.4 two regional observatories, Maldives Hanimaadhoo (MCOH) Gan (MCOG), representing an increase 80 %. likely reflects a scavenging fractionation, resulting in population finer with higher MAC678 that has greater longevity. At same time, BrC-MAC365 decreased by factor 3 Plain (IGP) equatorial Indian Ocean, due photochemical bleaching organic chromophores. high chlorine-to-sodium ratio BCOB, near source region, suggests significant contribution chorine anthropogenic activities. Particulate Cl− potential be converted into Cl radicals, which can affect oxidation capacity polluted air. Moreover, is shown nearly fully consumed long-range transport. results this synoptic study, conducted on large scale, provide rare observational constraints optical ambient (and BrC) over scales, away emission sources. They also contribute significantly understanding aging effect as pollution disperses tropical ocean.

Language: Английский

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