Includes bibliographical references and index.
|Statement||edited by Hanwant B. Singh.|
|Contributions||Singh, H. B.|
|LC Classifications||QC861.2 .C66 1995|
|The Physical Object|
|Pagination||xii, 527 p. :|
|Number of Pages||527|
|LC Control Number||94045885|
ISBN: OCLC Number: Description: xii, pages: illustrations ; 24 cm: Contents: History of air pollution / Peter Brimblecombe --Mean properties of the atmosphere / David A. Salstein --The changing composition of the Earth's atmosphere / M.A.K. Khalil and R.A. Rasmussen --Sources of air pollutants / Paulette Middleton --Atmospheric aerosols / Rudolf F. Rapid changes in the composition of the Earth's atmosphere, apparently a result of man's activities, are apparently even having an effect on global climate, and recent assessments of the Intergovernmental Panel on Climate Change are presented in this context. Air transport continues to expand, and the influence of aircraft on atmospheric Cited by: Composition of the atmosphere. Except for water vapor, whose atmospheric abundance varies from practically zero up to 4%, the fractions of the major atmospheric components N 2, O 2, and Ar are remarkably uniform below about greater heights, diffusion becomes the principal transport process, and the lighter gases become relatively more abundant. Oxidizing power of the atmosphere OH concentrations in the past Acetone in the upper troposphere Transport, rainout, and chemistry in the marine upper troposphere Bromine chemistry in the troposphere Nighttime oxidation of NOx Peroxyacetylnitrate (PAN) as a reservoir for NOx
February 2, Atmospheric Chemistry - 9in x 6in b page 1 Chapter1 The Physical and Chemical Properties of the Earth’s Atmosphere Introduction The Earth’s atmosphere behaves as a dynamic ﬂuid which can support a variety of motions on length scales spanning a few metres to the circumference of the entire planet. We use the UKCA (UK Chemistry and Aerosols) model within the ACCESS (Australian Community Climate and Earth System Simulator (ACCESS) framework to include and understand the role of chemical cycles of reactive gases (e.g. ozone and methane), aerosols, and their interactions, that have important (radiative) feedbacks on the current state and the predictions of the future state of the . The most abundant gas in the atmosphere is nitrogen, with oxygen second. Argon, an inert gas, is the third most abundant gas in the atmosphere. Why do I care? The composition of the atmosphere, among other things, determines its ability to transmit sunlight and trap infrared light, leading to potentially long-term changes in climate. Atmospheric chemistry focuses on understanding the factors determining atmospheric composition and its environmental implications for climate, air quality, and biogeochemical cycling.
Modelling Chemistry–Climate Interactions. A range of numerical models is developed to investigate connections between atmospheric chemistry and the climate system. Past changes in atmospheric composition and climate, and projections of the future state of the atmosphere under various scenarios, use such models to understand observations. Atmospheric chemistry has been the focus of much research activity in recent years, and there is now heightened public awareness of the environmental issues in which it plays a part. In a clear, readable style, this important book looks at the insights and interpretations afforded by the research, and places in context the exciting, dramatic, and sometimes disturbing findings. The composition of the atmosphere has changed since the Earth was formed billion years ago. Natural processes and human activity have changed the atmosphere, and continue to change it today. Chemically active climate compounds are either primary compounds like methane (CH 4), removed by oxidation in the atmosphere, or secondary compounds like ozone (O 3), sulfate and organic aerosols, both formed and removed in the -induced climate–chemistry interaction is a two-way process: Emissions of pollutants change the atmospheric composition contributing to climate change.