scispace - formally typeset
Search or ask a question

What is the impact of megacities on the lower atmosphere? 

Best insight from top research papers

Megacities have a significant impact on the lower atmosphere. Urban areas such as Beijing experience frequent new particle formation (NPF) events, which contribute to the aerosol number budget . Urbanization-induced warming, known as the urban heat island effect, leads to increased exposure to extreme warming for megacity residents . Megacity emissions, particularly reactive nitrogen compounds, have a disproportionate effect on global atmospheric chemistry, with increased abundance of PAN and changes in ozone levels . Emissions from European megacities contribute to the concentration of major PM2.5 components, such as black carbon, both within the cities and in the surrounding regions . Overall, the impact of megacities on the lower atmosphere includes changes in particle formation, temperature, atmospheric chemistry, and air quality.

Answers from top 4 papers

More filters
Papers (4)Insight
The impact of megacities on the lower atmosphere is relatively small compared to the proportion of anthropogenic emissions from megacities. However, the effects on reactive nitrogen compounds can be disproportionately large.
Open accessJournal ArticleDOI
01 Apr 2023-Heliyon
1 Citations
The provided paper does not directly address the impact of megacities on the lower atmosphere. It focuses on the impact of urbanization on exposure to extreme warming in megacities.
The impact of megacities on the lower atmosphere includes increased surface ozone levels and changes in local chemical environments.
The provided paper is about the formation and growth of sub-3 nm particles in megacities, specifically in urban Beijing. It does not directly discuss the overall impact of megacities on the lower atmosphere.

Related Questions

How does tourism impact urbanization?4 answersTourism has a significant impact on urbanization. It promotes urban-rural integration, narrowing the gap between urban and rural areas. Tourism development also contributes to the growth and expansion of cities and towns, transforming rural and peripheral landscapes into urban areas. Additionally, tourism can increase urban housing prices, particularly through domestic tourism, and this effect varies across different city sizes, locations, and tourist status. Furthermore, the eco-efficiency of tourism destinations is influenced by urbanization, with improvements in urbanization promoting economic and environmentally sustainable development. The environmental changes caused by green urbanization positively impact tourists' attachment to destinations, highlighting the importance of tourists' experience of urban change for destination marketing. Overall, tourism plays a crucial role in shaping urbanization processes, contributing to urban-rural integration, economic development, and environmental sustainability.
Is there any impacts on housing prices and sales about the low emission?5 answersThere are mixed impacts on housing prices and sales due to low emissions. In some cases, housing prices rise as pollution levels decrease, as predicted by hedonic theory. However, the release of emission information, such as through the European Pollutant Release and Transfer Register (E-PRTR), does not have a significant effect on housing prices. On the other hand, haze has a negative impact on both selling and rental prices of houses, with residents willing to pay a premium for better air quality. The announcement of the VW diesel emissions scandal also had a negative impact on house prices in the vicinity of the VW plant, with the effect being larger for locations closer to the plant. Finally, energy efficiency ratings mandated by the European Union have a positive impact on house prices, particularly for apartments in the top energy-efficiency categories.
How to achieve low carbon city?4 answersTo achieve a low-carbon city, several key strategies can be implemented. Firstly, it is important to focus on industrial structure adjustment, technological innovation, and the promotion of clean energy. Additionally, the concept of a low-carbon city emphasizes resource savings, low waste emissions, high operating efficiency, and sustainable urban activities. Implementing a polycentric network structure with high urban density and activity intensity can effectively support low-carbon strategies. Furthermore, digital technologies can play a crucial role in enhancing efficiency and reducing carbon footprints in cities. Lastly, traffic signal control using deep reinforcement learning techniques can contribute to low-carbon and environmentally friendly cities. By combining these strategies, cities can work towards achieving a low-carbon future.
How does the geography of a city affect the respiratory health of its residents?5 answersThe geography of a city can have a significant impact on the respiratory health of its residents. Studies have shown that urban heat island (UHI) effects, such as rising summer temperatures, can increase the risk of respiratory diseases. Additionally, the association between asthma emergency visits (AEV) and ambient air pollutants, such as NO2 and PM10, has been observed in cities. Poor air quality, influenced by weather conditions, topography, and geography, can lead to respiratory illnesses like Chronic Obstructive Pulmonary Disease (COPD) and asthma. Socioeconomic factors also play a role, as socioeconomic characteristics have been identified as major discriminators for respiratory health inequalities among urban areas. Understanding the relationships between geography, air pollution, and socioeconomic factors is crucial for designing effective urban policies to improve respiratory health outcomes.
How does urbanization impact urban heat island?4 answersUrbanization has a significant impact on the urban heat island (UHI) phenomenon. As cities expand and urban areas increase, there is a decrease in green spaces and an increase in built-up areas, resulting in higher temperatures in urban centers compared to surrounding rural areas. The transformation of natural landscapes into impervious surfaces such as concrete and asphalt leads to low albedo, high impermeability, and thermal properties that favor energy storage and heat release, contributing to the UHI effect. Studies have shown that urban areas experience elevated surface and air temperatures compared to their rural surroundings, leading to the warming of urban areas, known as the heat island effect. The expansion of urban areas and dense settlements further exacerbates the UHI effect, causing an increase in average temperatures in cities. The impacts of UHI can be felt more deeply in cities with growing populations and inadequate urban planning policies.
What cities are affected by global warming?8 answers

See what other people are reading

What is metabarcoding used for?
5 answers
Metabarcoding is used for simultaneously surveying hundreds to thousands of species from a single sample, underpinning microbiome and environmental DNA (eDNA) methods. It is a powerful molecular tool that provides important information for ecology, conservation, management, and health. Metabarcoding can be used to study the feeding habits and diet of endangered fish species, such as Totoaba macdonaldi. It can also be used to survey plant biodiversity in freshwater systems, including macrophytes and terrestrial plants. Additionally, metabarcoding can be used to identify taxonomic diversity in bird nests, including arthropod remains, nest dust, and feathers. Overall, metabarcoding is a versatile tool that allows for the detection and identification of various species in different ecosystems, providing valuable insights for research and conservation efforts.
How do chemistry laboratory classes conduct distance learning?
5 answers
Chemistry laboratory classes conduct distance learning by utilizing various strategies and tools. These include the use of online class applications such as WhatsApp Group, Google Classroom, and Zoom for communication and interaction among students and teachers. Students also utilize printed textbooks, e-books, and student worksheets as learning materials. Laboratory practice is conducted at home using easily accessible tools and materials, with some students using materials purchased from a chemical store and virtual laboratories. Students report their practice results through laboratory practice reports, video activities, and Microsoft PowerPoint presentations. To enhance the learning experience, audio-visual learning media, computer/android-based games, and virtual lab applications are provided. Additionally, teachers offer opportunities for students to ask questions and seek clarification on chemistry topics they do not understand. The implementation of virtual learning techniques, such as prerecorded videos, live-stream video conferencing, and digital lab environments, also contributes to effective chemistry laboratory education.
How volunteering affects community?
5 answers
Volunteering has a positive impact on individuals and communities. It can lead to personal transformation, changes in attitude, improved personal well-being, and the development of new relationships. Volunteering also enhances social resources such as community belonging, community commitment, knowledge of local services, social competence, and community leadership. School community service has a short-term positive effect on attitudes towards volunteering, particularly in terms of altruistic attitudes and the perceived importance of helping others. For South Asian individuals, volunteering is tied to religious and cultural motivations, and it can cultivate individual well-being and a sense of meaning and purpose. However, South Asians who volunteer may also face social injustice and marginalization, which can serve as a motivation for volunteering for their community. To promote volunteering for ethnic minorities, it is important to adopt cultural and religious sensitivity and remove barriers to access and support for volunteering.
How can Cannabis indica be synthesized?
5 answers
Cannabis indica can be synthesized through various methods. One method involves the synthesis of Cannabis indica fiber-reinforced composites using Urea-Resorcinol-Formaldehyde (URF) as a matrix through compression molding technique. Another method involves the production of synthetic seeds using encapsulation of nodal segments derived from in vitro or in vivo sources. These synthetic seeds are produced in a sodium alginate and calcium chloride medium and stored under specific environmental conditions. Additionally, the synthesis of deuterium-substituted cannabinoids and analogues has been studied, providing insights into the relationship between structure and mass-spectral fragmentation. Furthermore, O-Methylcannabispirenone, a compound derived from Cannabis indica, has been synthesized through a multi-step process involving various chemical reactions. These methods offer different approaches to synthesizing Cannabis indica and provide opportunities for further research and development in the field.
What insights into flavor come from FUTs?
5 answers
Insights into flavor come from FUTs. Fungicides such as boscalid and difenoconazole have been found to decrease the contents of soluble sugar and nutrients but increase acids in mature fruits, change the levels of volatiles, and cause oxidative damage, ultimately reducing the flavor quality of strawberries. Additionally, the study of plant-derived flavor compounds at the molecular level can provide insight into the unique chemistry that plants use to generate intricate, flavor-active metabolites. Furthermore, an integrated analysis of genomic, transcriptomic, and metabolomic data has shown that "alpha-linolenic acid metabolism," "metabolic pathways," and "secondary metabolic pathways" are the main pathways involved in the synthesis of important volatile organic compounds (VOCs) in passion fruit. These findings contribute to a better understanding of the physiological-biochemical and molecular mechanisms underlying flavor and provide a foundation for improving flavor quality in various fruits.
How philosophy is important to human person?
5 answers
Philosophy is important to the understanding of the human person because it helps to evaluate and clarify concepts related to human development, values, and ethics. It provides a framework for examining the nature of the human person, their relationship to society, and their role in the world. Philosophy also helps to uncover the true meaning of concepts and ideas, allowing for a deeper understanding of human development and the importance of values. Additionally, philosophy can contribute to the development of curricula, such as the Introduction of Philosophy of the Human Person (IPHP) curriculum, by ensuring the integration of relevant themes, goals, and aims. By studying philosophy, individuals can gain a critical attitude and a clearer perspective on the quality of human development, distinguishing between authentic and inauthentic developments. Overall, philosophy plays a crucial role in enhancing our understanding of the human person and guiding our actions and decisions in a moral and responsible manner.
What are the challenges and opportunities for hydroponics in the Philippines?
5 answers
Hydroponics in the Philippines presents both challenges and opportunities. The challenges include the exhaustion of suitable land for crop production, degradation of the environment, and pressure on agricultural lands due to population growth. However, there are also opportunities for hydroponics in the country. It has the potential to be developed as a means of education and tourism, with benefits such as the use of electronic media and technology, modification of hydroponic installations, and education on hydroponic farming calculations. Additionally, hydroponics can contribute to sustainable crop production under controlled environment agriculture, offering opportunities for nutrient recycling and efficient water use. These opportunities can support the sustainability of hydroponics and contribute to the conservation of water resources. Overall, hydroponics in the Philippines faces challenges related to land availability and environmental degradation, but also offers opportunities for education, tourism, and sustainable crop production.
How did the development of the automobile industry compare to the development of other industries in the United States?
5 answers
The development of the automobile industry in the United States has been influenced by various factors. The Korean automobile industry has invested in the US to ease trade regulations and establish a stable supply chain. In the early US automobile industry, inter-industry local externalities and employee spinouts played important roles in regional industry agglomeration. Companies in the US, Japan, and Europe have been competing to improve engine efficiency and reduce emissions, with each country having its own regulations on emission rates and automobile structure. The automotive industry today is facing challenges such as globalization, digitalization, and increasing competition, requiring companies to find innovative techniques to create value. The development of the automobile industry in the US has been shaped by rapid technological progress and trade barriers, with price frictions and income effects contributing to its diffusion.
How Arabic's unique script and writing systems present specific challenges in assessment?
5 answers
Arabic's unique script and writing systems present specific challenges in assessment. The composition of Arabic symbols is more complex than European languages, and there are specific rules and symbols that are not properly addressed in existing recognition algorithms. The different positions of Arabic letters further complicate handwriting recognition, especially in the context of digital education during a pandemic. Additionally, the variability in handwriting styles and characters among individuals makes it difficult to accurately recognize Arabic script patterns. These challenges have prompted researchers to explore advanced machine learning techniques, such as deep learning and transfer learning, to improve Arabic handwriting recognition. Preprocessing approaches and feature selection have also been investigated to enhance the accuracy of Arabic writing recognition models. Overall, recognizing Arabic writing remains a challenging task that requires further research and development.
Was Fads2 studied in human foreskin fibroblasts?
5 answers
Fads2 was not studied in human foreskin fibroblasts in the abstracts provided.
What are the factors that affect the anemia level in children aged 0-59 months in Nigeria?
5 answers
The factors that affect the anemia level in children aged 0-59 months in Nigeria include age, maternal anemia status, sex, household wealth quintiles, and the use of drugs for intestinal parasites. Children aged 6-12 months have a higher risk of anemia compared to older children. Children with anemic mothers are more likely to have anemia themselves. Male children, underweight children, stunted children, and children with a recent episode of fever are also at increased risk of anemia. On the other hand, children aged 12-59 months have decreased odds of having anemia compared to infants. Children from wealthier households and those who take drugs for intestinal parasites have lower odds of having anemia. These factors highlight the need for public health interventions and policies to address anemia in children in Nigeria.