Changes in Global Atmospheric Chemical Reaction System and Global Environment. Ozone Hole.

Ozone, Climate, and Global Atmospheric Change

Global atmospheric changes.

Increasing concentrations of CO2 and other greenhouse gases in the atmosphere can be directly related to global warming. In terms of human health, because a major cause of increasing atmospheric concentrations of CO2 is the increased combustion of fossil fuels, global warming also may result in increases in air pollutants, acid deposition, and exposure to ultraviolet (UV) radiation. To understa...

Chemical solvers in global atmospheric models

Implementation and evaluation of an array of chemical solvers in a global chemical transport model P. Eller, K. Singh, A. Sandu, K. Bowman, D. K. Henze, and M. Lee Department of Computer Science, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA NASA Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109, USA Earth Institute, Columbia University, 2880 B...

Global atmospheric methane: budget, changes and dangers.

A factor of 2.5 increase in the global abundance of atmospheric methane (CH(4)) since 1750 contributes 0.5 Wm(-2) to total direct radiative forcing by long-lived greenhouse gases (2.77 Wm(-2) in 2009), while its role in atmospheric chemistry adds another approximately 0.2 Wm(-2) of indirect forcing. Since CH(4) has a relatively short lifetime and it is very close to a steady state, reductions i...

Global monitoring of atmospheric ozone and solar UV radiation

The global monitoring network of ground-based ozone measurements consists mainly of Dobson and Brewer spectrophotometers. These instruments provide total ozone column amounts derived from measurements of direct solar UV radiation. Analysis of total ozone measurements from the global monitoring network shows a nearly linear downward trend from 1980 to mid 1990s. Data after mid 1990s indicate tha...