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61,005 resultsShowing papers similar to Snowballing Impact of Spontaneously Degrading Microplastics on Atmospheric Ice Nucleation
ClearSnowballing Impactof Spontaneously Degrading Microplasticson Atmospheric Ice Nucleation
Researchers demonstrated that as microplastics degrade in the environment they become smaller and more porous, dramatically enhancing their ice-nucleating activity. Global airborne microplastic data integrated with climate modelling suggested that this progressive degradation could alter precipitation patterns and atmospheric chemistry at a meaningful scale.
Weathering influences the ice nucleation activity of microplastics
Researchers discovered that microplastics can influence ice formation in the atmosphere, a process important for cloud behavior and weather patterns. They found that polyethylene microplastics could trigger ice crystal formation at temperatures relevant to mixed-phase clouds, and that environmental weathering altered this capability. The study reveals a previously unknown way that atmospheric microplastic pollution could potentially influence weather and climate processes.
Microplastic Particles Contain Ice Nucleation Sites That Can Be Inhibited by Atmospheric Aging
Scientists discovered that some microplastic particles can trigger ice crystal formation in clouds, a process that influences weather patterns and rainfall. However, when the plastics were exposed to UV light and ozone (simulating atmospheric aging), their ice-forming ability decreased, suggesting that weathered microplastics in the atmosphere may behave differently from fresh particles.
Microplastic particles contain ice nucleation sites that can be deactivated by atmospheric aging
Researchers found that microplastics can act as ice nucleation sites that trigger cloud glaciation, but that atmospheric aging processes such as UV exposure and chemical weathering can deactivate these ice nucleation properties, with implications for cloud formation and climate.
Potential Influence of Microplastics on Cloud Formation through Heterogeneous Ice Nucleation
Researchers tested whether microplastic particles can act as ice-nucleating agents and influence cloud ice formation through heterogeneous ice nucleation in laboratory experiments. Multiple polymer types triggered ice nucleation at temperatures relevant to cloud formation, suggesting that airborne microplastics could influence precipitation processes and atmospheric chemistry.
Investigating the ice nucleation activity of microplastics colonized with microorganisms
Researchers investigated whether microplastics colonized by microorganisms show increased ice nucleation activity compared to uncolonized particles. The study found that weathering and microbial colonization can alter microplastic surface properties in ways relevant to atmospheric processes.
Potential impacts of atmospheric microplastics and nanoplastics on cloud formation processes
Researchers investigated how atmospheric microplastics and nanoplastics could act as cloud condensation nuclei or ice nucleating particles, potentially affecting cloud formation, precipitation patterns, and Earth's radiation balance at sufficient concentrations.
Microplastic particles contain ice nucleation sites that can be inhibited by atmospheric aging
Researchers found that microplastic particles contain ice nucleation sites that promote atmospheric ice formation and that atmospheric organic molecules can inhibit this nucleation activity, with implications for cloud formation and climate effects.
Heterogeneous Ice Nucleation of Microplastics before and after Oxidation
Researchers investigated heterogeneous ice nucleation induced by seven morphologies of polypropylene, polyethylene, and polyethylene terephthalate microplastics in immersion freezing mode, and examined how atmospheric oxidation affects their ice-nucleating efficiency and potential influence on cloud formation.
Adsorption-Driven Cloud Droplet Activation of Fresh and Aged Polypropylene Particles
Scientists found that tiny plastic particles in the air can help form clouds and potentially affect weather patterns. When these plastic particles get weathered by sunlight and air pollution, they become much better at attracting water droplets to form clouds compared to fresh plastic particles. This matters because microplastics are now everywhere in our atmosphere, and understanding how they change weather and climate could help us better predict environmental changes that affect human health and agriculture.
Investigating the ice nucleation activity of microplastics colonized with microorganisms
This study investigated whether microplastics colonized by microorganisms can act as ice nucleation particles, a process relevant to cloud formation and atmospheric processes. Microbial colonization altered the surface properties of microplastics and enhanced their ice nucleation activity, suggesting a potential but underexplored role of plastic pollution in atmospheric chemistry.
Pristine and Aged Microplastics Can Nucleate Ice Through Immersion Freezing
Laboratory experiments showed that microplastics made from four common plastics — polyethylene, polypropylene, PVC, and PET — can act as ice nuclei in the atmosphere, and that environmental aging (UV exposure, ozone, acid) changes their ice-nucleating ability. As microplastics are found throughout the atmosphere and even in clouds, this finding suggests they could potentially influence precipitation and cloud formation, with implications for regional weather and climate.
Do Microplastics Contribute to the Total Number Concentration of Ice Nucleating Particles?
Researchers modeled road-traffic-related microplastic emissions and estimated their potential contribution to ice-forming particles in clouds. In tropical regions and remote areas like East Antarctica, where other ice-nucleating particles are scarce, microplastics could account for up to 40% of the total ice-nucleating particle concentration. The study suggests that airborne microplastics may be influencing cloud formation and precipitation patterns in ways not previously considered.
Colonization of Microplastics by Different Strains of Pseudomonas Syringae Increases Ice-Nucleation Activity
Scientists found that tiny plastic particles floating in our atmosphere can help form ice crystals in clouds, especially when bacteria grow on their surfaces. When certain bacteria colonize these microplastics, they become much better at creating ice, which could change how clouds form and behave in our atmosphere. This matters because microplastics are everywhere in our environment, and this research shows they might be affecting weather patterns in ways we didn't know about before.
Airborne hydrophilic microplastics in cloud water at high altitudes and their role in cloud formation
Researchers collected cloud water from mountain summits in Japan at altitudes up to 3,776 meters and found microplastics in every sample, including common types like polyethylene and polypropylene. Many of the particles showed signs of degradation and contained water-attracting chemical groups, suggesting they could influence cloud formation by acting as condensation nuclei. The study raises the possibility that airborne microplastics may be affecting weather patterns and climate at a global scale.
Ice Nucleation of Model Nanoplastics and Microplastics: A Novel Synthetic Protocol and the Influence of Particle Capping at Diverse Atmospheric Environments
Researchers developed a novel low-energy synthetic protocol for producing model nano- and microplastic particles and investigated their ice nucleation activity, finding that particle capping significantly influenced ice formation behavior across different simulated atmospheric environments.
Tire-Wear Particles as Potential Ice-Nucleating Agents in the Atmosphere
Tire-wear particles — one of the largest global sources of microplastic pollution — can become airborne and may influence cloud formation by acting as ice-nucleating agents in the atmosphere. This study found that these particles have the potential to affect cloud glaciation, meaning microplastic pollution could have indirect climate effects beyond what occurs on land and in water.
Antagonistic Effects of Atmospheric Oxidative Aging and Salt Coating Sustain the Ice-Nucleating Ability of Nanoplastics
Researchers investigated how atmospheric oxidative aging and salt coating affect the ice-nucleating ability of nanoplastics, finding that these two processes have antagonistic effects that sustain ice-nucleating capacity over time. The results suggest that weathered nanoplastics in the atmosphere can maintain climate-relevant properties, with implications for cloud formation and precipitation processes.
Do Microplastics Contribute to the Total Number Concentration of Ice Nucleating Particles?
This study measured microplastic concentrations in air near roads and estimated whether road traffic-derived microplastics — from tire wear, brake dust, and road markings — contribute meaningfully to the total number of ice-nucleating particles in the atmosphere. The results showed that traffic-related microplastics do add to ice-nucleating particle counts, though their overall contribution relative to other aerosol sources requires further investigation. The findings are relevant because ice-nucleating particles influence cloud formation and precipitation, meaning airborne microplastics could have subtle effects on regional weather patterns.
Pristine and Aged Microplastics Can Nucleate Ice through Immersion Freezing
Researchers tested whether microplastics can act as ice-nucleating particles in the atmosphere and found that all four polymer types studied could trigger ice formation through immersion freezing. Environmental aging processes such as UV exposure and ozone treatment generally decreased ice-nucleating activity for most plastics, though PVC showed increased activity after aging. The findings suggest that airborne microplastics may play a previously unrecognized role in atmospheric ice formation and cloud processes.
Distribution and impacts of microplastic incorporation within sea ice
Researchers experimentally incorporated microplastics into sea ice to investigate their distribution and impact on ice properties, finding that microplastics concentrate within sea ice at levels far exceeding surface seawater and that their presence alters the physical and optical properties of the ice.
Entrainment and Enrichment of Microplastics in Ice Formation Processes: Implications for the Transport of Microplastics in Cold Regions
Researchers investigated how microplastic properties and environmental conditions affect their entrainment and enrichment during ice formation, finding that sea ice selectively concentrates microplastics and can serve as both a temporary sink and a transport medium in cold regions.
Physical processes behind interactions of microplastic particles with natural ice
Researchers investigated the physical processes governing microplastic incorporation into sea ice, finding that particle size, density, and surface properties — combined with ice crystal growth dynamics — determine whether microplastics concentrate in brine channels or become entrapped in the ice matrix.
Tire-wear particles as potential ice nucleating agents in the atmosphere
Researchers systematically investigated the ice-nucleating properties of tire-wear particles -- one of the largest global sources of microplastic pollution at approximately 6 million tons annually -- finding that these airborne particles can act as heterogeneous ice nucleating agents capable of influencing cloud glaciation and atmospheric processes during long-range transport.