Surface sensitive studies on the heterogeneous photochemistry of multicomponent aerosols relevant to atmospheric environments

与大气环境相关的多组分气溶胶异质光化学的表面敏感研究

• 批准号: 327088-2011
• 负责人: AlAbadleh, HindA
• 金额: $ 2.55万
• 依托单位: Wilfrid Laurier University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=481577
• 关键词: Surface; sensitive; studies; heterogeneous; photochemistry

The lower atmosphere, or troposphere, comprises a large concentration of minute airborne particles known as aerosols. Atmospheric aerosols are emitted from natural sources (e.g. dust, sea salt), and from human activities (e.g. soot). They have complex chemical composition and they impact the global climate by influencing the amount of sunlight reaching the Earth's surface. Computer simulations of the climate give us the capability of quantifying the magnitude of aerosols' contribution to climate change. Yet aerosols' representation in these simulations is still inadequate, mainly because aerosols are complicated in nature and their reactivity and properties change with time. Thus, it is imperative to address scientific questions related to the chemistry of aerosols through experimental studies.

低层大气，或对流层，包括大量的微小空气悬浮颗粒，称为气溶胶。大气气溶胶由自然源（如灰尘、海盐）和人类活动（如煤烟）排放。 它们具有复杂的化学成分，通过影响到达地球表面的阳光量来影响全球气候。 气候的计算机模拟使我们有能力量化气溶胶对气候变化的影响程度。然而，气溶胶在这些模拟中的代表性仍然是不够的，主要是因为气溶胶的性质是复杂的，它们的反应性和性质随时间变化。 因此，必须通过实验研究解决与气溶胶化学有关的科学问题。