Air quality in urban areas is a cause of concern because of increased industrial activities that contribute to large quantities of emissions. The study assess levels and variations of carbon monoxide (CO), nitrogen dioxide (NO2) and sulfur dioxide (SO2) in Blantyre, Malawi using a stationary environmental monitoring station (EMS). Results show that CO level (2.47 ± 1.23 mg m -3 ) were below the...

23 Anthropogenic emissions of nitrogen oxides (NOx ≡ NO + NO2) and carbon monoxide (CO) 24 affect particulate matter (PM) air quality on an intercontinental scale by changing background 25 concentrations of oxidants (OH, ozone, H2O2) and thus increasing the oxidation rate of sulfur 26 dioxide (SO2) to sulfate and NOx to nitrate. We conduct sensitivity simulations with the GEOS27 Chem chemical t...

Title of Document: AIR POLLUTANT CONCENTRATIONS AND TRENDS OVER THE EASTERN U.S. AND CHINA: AIRCRAFT MEASUREMENTS AND NUMERICAL SIMULATIONS Hao He, Doctor of Philosophy, 2012 Directed By: Professor Russell R. Dickerson Department of Atmospheric and Oceanic Science In the last several decades, efforts have been made to mitigate air pollution all around the world. With surface observations showin...

It is known that aerosol and precursor gas emissions over East Asia may be underestimated by 50% due to the absence of data on regional rural and township industries. As the most important element of anthropogenic emissions, sulphur dioxide (SO2) can form sulfate aerosols through several chemical processes, thus affecting the regional and global climate. In this study, we use the Community Atmo...

Introduction: Health tourism is an organized travel we make from where we live to another place to keep, regain, and improve physical and mental health. It can be also a national strategy to improve national income and some believe that it can be an integral part of national security. The present study is an attempt to determine the relationship between obser...

I n the late 1980s, there was growing concern in the United States and other countries that acid precipitation—the result of emissions of sulfur dioxide (SO2) and, to a lesser extent, nitrogen oxides (NOx) reacting in the atmosphere to form sulfuric and nitric acids —was damaging forests and aquatic ecosystems, particularly in the US Northeast and southern Canada. In the United States, fl ue ga...