International environmental policy processes that dispossessed developing societies of public land resources: A case study of Nepal DOI Creative Commons
Bhubaneswor Dhakal, Kedar Adhikari,

Narendra Chand

et al.

GeoJournal, Journal Year: 2023, Volume and Issue: 88(6), P. 5677 - 5719

Published: Oct. 4, 2023

Abstract Public lands including forests and community pastures are still crucial means of local livelihood, social security, environmental conservation in many developing countries Nepal. However, these resources increasingly managed primarily to offset greenhouse gas emissions developed countries. The new management has exacerbated problems: livelihood constriction, crises, human casualties (deaths serious injuries), biodiversity degradation, water scarcity cryosphere retreating. Drawing data from multiple sources, this study attempted explain the international political objectives processes that dispossessed societies public land for benefit It shows representatives were proactively strategically involved agenda formation, solutions negotiations, decision-making while policies, succeeded structure policies managing best their own provided funds experts, as strategic tools, through aid agencies implement interest institutionally weak In Nepal, influenced thinking decisions government other stakeholders a series measures. They propagandized false worked with coalition powerful agencies, offered free technical support, changed national manage achieving missions. Active involvement policy implementation also helped monitor hurdles apply tactics resolve them. Lucrative flash incentives motivate get support communities, stakeholders, politicians policies. Psychosocial pressures applied persuade communities leaders getting cooperation making practicing legal institutions (government authority rules or orders, user group rules, forest plans) bind control protection. obliged contribute labor cash developing, modifying, protecting forests. These two levels interventions led further development reinforcing institutions, resource conditions, social-ecological systems secured benefits deprived power control, produce access backyard years. This showed have respectively served institutional weapons vehicles materially colonize weaker countries, without using physical coercion deplyment military forces.

Language: Английский

The impact of atmospheric ultrafine particulate matter on IgE-mediated type 1 hypersensitivity reaction DOI

Jeong Won Park,

Minseong Kang,

Gyuri Kim

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 484, P. 136705 - 136705

Published: Nov. 29, 2024

Language: Английский

Citations

1
On the correlation between hygroscopic properties and chemical composition of cloud condensation nuclei obtained from the chemical aging of soot particles with O3 and SO2 DOI
Junteng Wu, Alessandro Faccinetto,

Sébastien Batut

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 906, P. 167745 - 167745

Published: Oct. 11, 2023

Language: Английский

Citations

2
Investigation of Black Carbon Wet Deposition to the United States from National Atmospheric Deposition Network Samples DOI Creative Commons
Piyaporn Sricharoenvech, Ross Edwards,

Müge Yaşar

et al.

Aerosol and Air Quality Research, Journal Year: 2023, Volume and Issue: 24(5), P. 230089 - 230089

Published: Nov. 22, 2023

Black carbon (BC) aerosols from burning biomass, fossil fuels, and waste are transported over large distances in the Earth's atmosphere, absorbing sunlight, altering climate, impacting air quality. These relatively short-lived troposphere returned to surface by wet dry deposition processes. Although is considered primary mechanism for removing BC published data exceptionally scarce. In this study, we investigated feasibility of determining on a national/international scale using samples US National Atmospheric Deposition Program (NADP). The study concentrations precipitation single-particle laser-induced incandescence (SP2). An intra-instrumental comparison with Thermal Optical Analysis (TOA). From October 26th December 1st, 2020, analyzed 478 NADP 209 locations, including sites United States, Canada territories, Puerto Rico, Virgin Islands. Wet varied less than 0.3 µg L-1 38.7 median 3.50 L-1. Associated fluxes ranged near zero 9.1 g ha-1 wk-1, 0.87 wk-1. analysis spatial variability indicated pattern higher through central States consistent transport biomass during sampling period.

Language: Английский

Citations

2
Characterizing Winter-Time Brown Carbon: Insights into Chemical and Light-Absorption Properties in Residential and Traffic Environments DOI
Luis Barreira, Minna Aurela, Sanna Saarikoski

et al.

Published: Jan. 1, 2024

Brown carbon (BrC) is an organic aerosol (OA) component that possesses light-absorbing properties in the UV-vis spectrum, impacting climate change. However, current understanding of repercussions stemming from BrC emissions remains insufficient due to a lack comprehensive knowledge regarding its chemical makeup, light-absorption, and role atmospheric aging shaping properties. This study investigates PM1 (particulate matter < 1 µm) during winter Helsinki, Finland, street canyon residential area with wood combustion. The aim was ascertain sources, composition, contribution UV-Vis light absorption. utilized seven-wavelength aethalometer (AE33) measure black (BC) absorptions, soot particle mass spectrometer (SP-AMS) determine OA composition. An source apportionment using positive matrix factorization followed by multiple regression analysis between each factor absorption were performed coefficients (MACBrC) contributions distinct sources across 370-660 nm wavelengths. relative BC up 20.4±9.4% 18.9±8.6% traffic site, higher observed at lower Residential showed sporadic peaks, while but consistent. MACBrC for biomass burning still significant long-range transported (LRT) traffic-related aerosols. Hydrocarbon-like exhibited 470 than 370 both sites. Combined particulate concentrations, LRT particles contributed most composition revealed stronger correlations SP-AMS-measured ions, especially areas polycyclic aromatic hydrocarbons, oxidized aromatics, nitrogen-containing aromatics. emphasizes importance anthropogenic

Language: Английский

Citations

0
Technical note: High-resolution analyses of concentrations and sizes of black carbon particles deposited on northwest Greenland over the past 350 years – Part 1. Continuous flow analysis of the SIGMA-D ice core using a Wide-Range Single-Particle Soot Photometer and a high-efficiency nebulizer DOI Creative Commons
Kumiko Goto‐Azuma, Rémi Dallmayr,

Yoshimi Ogawa‐Tsukagawa

et al.

Published: May 23, 2024

Abstract. Ice cores can provide long-term records of black carbon (BC), an important aerosol species closely linked to the climate and environment. However, previous studies ice only analysed BC particles with diameter <600–850 nm, which could have led underestimation mass concentrations. Information on size distribution is very limited, there are no Arctic core temporal variation in distribution. In this study, we applied a recently developed improved technique analyse concentration drilled at SIGMA-D site northwest Greenland. The technique, uses modified Single-Particle Soot Photometer high-efficiency nebulizer, widens measurable range particle size. For high-resolution continuous analyses cores, flow analysis (CFA) system (resolution: 10–40 mm). Coupling measurement CFA allows accurate measurements between 70 nm 4 μm, minimal losses. Using reconstructed distributions number concentrations during past 350 years. On basis distributions, assessed measured using conventional method. period 2003–2013, average would been 12 %–17 % for core.

Language: Английский

Citations

0
Comment on egusphere-2024-1496 DOI Creative Commons
Kumiko Goto‐Azuma, Rémi Dallmayr,

Yoshimi Ogawa‐Tsukagawa

et al.

Published: June 4, 2024

Abstract. Ice cores can provide long-term records of black carbon (BC), an important aerosol species closely linked to the climate and environment. However, previous studies ice only analysed BC particles with diameter <600–850 nm, which could have led underestimation mass concentrations. Information on size distribution is very limited, there are no Arctic core temporal variation in distribution. In this study, we applied a recently developed improved technique analyse concentration drilled at SIGMA-D site northwest Greenland. The technique, uses modified Single-Particle Soot Photometer high-efficiency nebulizer, widens measurable range particle size. For high-resolution continuous analyses cores, flow analysis (CFA) system (resolution: 10–40 mm). Coupling measurement CFA allows accurate measurements between 70 nm 4 μm, minimal losses. Using reconstructed distributions number concentrations during past 350 years. On basis distributions, assessed measured using conventional method. period 2003–2013, average would been 12 %–17 % for core.

Language: Английский

Citations

0
Comment on egusphere-2024-1496 DOI Creative Commons
Kumiko Goto‐Azuma, Rémi Dallmayr,

Yoshimi Ogawa‐Tsukagawa

et al.

Published: June 13, 2024

Abstract. Ice cores can provide long-term records of black carbon (BC), an important aerosol species closely linked to the climate and environment. However, previous studies ice only analysed BC particles with diameter <600–850 nm, which could have led underestimation mass concentrations. Information on size distribution is very limited, there are no Arctic core temporal variation in distribution. In this study, we applied a recently developed improved technique analyse concentration drilled at SIGMA-D site northwest Greenland. The technique, uses modified Single-Particle Soot Photometer high-efficiency nebulizer, widens measurable range particle size. For high-resolution continuous analyses cores, flow analysis (CFA) system (resolution: 10–40 mm). Coupling measurement CFA allows accurate measurements between 70 nm 4 μm, minimal losses. Using reconstructed distributions number concentrations during past 350 years. On basis distributions, assessed measured using conventional method. period 2003–2013, average would been 12 %–17 % for core.

Language: Английский

Citations

0
Comment on egusphere-2024-1496 DOI Creative Commons
Kumiko Goto‐Azuma, Rémi Dallmayr,

Yoshimi Ogawa‐Tsukagawa

et al.

Published: June 16, 2024

Abstract. Ice cores can provide long-term records of black carbon (BC), an important aerosol species closely linked to the climate and environment. However, previous studies ice only analysed BC particles with diameter <600–850 nm, which could have led underestimation mass concentrations. Information on size distribution is very limited, there are no Arctic core temporal variation in distribution. In this study, we applied a recently developed improved technique analyse concentration drilled at SIGMA-D site northwest Greenland. The technique, uses modified Single-Particle Soot Photometer high-efficiency nebulizer, widens measurable range particle size. For high-resolution continuous analyses cores, flow analysis (CFA) system (resolution: 10–40 mm). Coupling measurement CFA allows accurate measurements between 70 nm 4 μm, minimal losses. Using reconstructed distributions number concentrations during past 350 years. On basis distributions, assessed measured using conventional method. period 2003–2013, average would been 12 %–17 % for core.

Language: Английский

Citations

0
Characterizing winter-time brown carbon: Insights into chemical and light-absorption properties in residential and traffic environments DOI Creative Commons
Luis Barreira, Minna Aurela,

Sanna Saarikoski

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 955, P. 177089 - 177089

Published: Nov. 1, 2024

Brown carbon (BrC) is an organic aerosol (OA) component that possesses light-absorbing properties in the UV-Vis spectrum, impacting climate. However, current understanding of climate repercussions stemming from BrC emissions remains insufficient due to a lack comprehensive knowledge regarding its chemical makeup, light-absorption, and role atmospheric aging shaping properties. This study investigates PM

Language: Английский

Citations

0
An investigative review of the expanded capabilities of thermal/optical techniques for measuring carbonaceous aerosols and beyond DOI
Yi Shen, Guorui Zhi, Yuzhe Zhang

et al.

Environmental Pollution, Journal Year: 2024, Volume and Issue: unknown, P. 125363 - 125363

Published: Nov. 1, 2024

Language: Английский

Citations

0