................................................................................................ 3 Introduction............................................................................................ 3 Part 1................................................................................................. 3 Diesel aerosol composition and structure................................................

With one ∆m of the appropriate order of magnitude to solve the atmospheric neutrino problem, we study the resulting three-generation vacuumoscillation fit to the solar neutrino flux. An explanation of the atmospheric neutrino composition in terms of pure νμ → ντ oscillations is easily compatible with the well-known two-flavour oscillation solution for solar neutrinos. The allowed parameter regi...

The distribution of CO in Gliese 229B’s atmosphere reveals how disequilibrium processes establish the atmospheric composition. The CO abundance derived from its spectral signature exceeds the equilibrium value by several orders of magnitude. Our investigation of the source for CO considers disequilibrium mechanisms common to planetary atmospheres and concludes that the CO abundance is sensitive...

The concept whereby heat is recovered from a geothermal reservoir by replacing the native aqueous phase with essentially pure high-pressure carbon dioxide as the working fluid is referred to as an Enhanced Geothermal System with CO2 (EGSCO2). The concept has yet to be tested in the field, and the chemical consequences, both within the reservoir itself, and at its periphery, are not fully unders...

CO oxidation on Pd(100), -(111), -(110), and Pt(110) single crystals was studied at steady-state conditions at low (e2 × 10-3 Torr) and high (2-88 Torr) pressures at various reactant compositions. At low pressures the reaction fell into two regimes, one with a CO-dominant surface where the CO2 formation rate is low, and a second with an O-dominant surface where the reaction rate is high. Within...

A kinetic chemistry tagging technique and its application to modelling the stable isotopic composition of atmospheric trace gases S. Gromov, P. Jöckel, R. Sander, and C. A. M. Brenninkmeijer Atmospheric Chemistry Department, Max Planck Institute for Chemistry, P.O. Box 3060, 55020 Mainz, Germany now at: Deutsches Zentrum für Luft-und Raumfahrt (DLR), Institut für Physik der Atmosphäre, Oberpfaf...

The challenge for instrument manufacturers is to continuously improve and evolve their instrumentation to keep pace with scientific research. One field where this is evident is atmospheric aerosol research. The variety in aerosol size, shape, chemical composition, and their ability to change properties under varying atmospheric conditions creates many challenges in quantifying their impact on t...

Aerosols are among the most important of atmospheric pollutants observed like the microscopic particulate matter in the lower parts of the troposphere. The main purpose of this study is introducing a new method based on satellite images processing results and nonlinear analysis (fractal based) to investigate the origin and dynamical mechanism of aerosols distribution in North Africa and the Mid...

High-resolution geochemical analyses of organic-rich shale and carbonate through the 2500 million-year-old Mount McRae Shale in the Hamersley Basin of northwestern Australia record changes in both the oxidation state of the surface ocean and the atmospheric composition. The Mount McRae record of sulfur isotopes captures the widespread and possibly permanent activation of the oxidative sulfur cy...

[1] One-dimensional and two-dimensional models are used to investigate the isotopic composition of atmospheric N2O. The sources of N2O in the atmosphere are based on recent laboratory measurements of the N2O quantum yield in the mixture of O3/O2/N2 (Estupiñán et al., 2002). Two recently proposed pathways (Estupiñán et al., 2002; Prasad, 2005) are evaluated in the model. We find that the new atm...