A coupled atmospheric chemistry and climate system model was developed using the modal aerosol version of the National Center for Atmospheric Research Community Atmosphere Model (modal-CAM; v3.6.33) and the Max Planck Institute for Chemistry’s Module Efficiently Calculating the Chemistry of the Atmosphere (MECCA; v2.5) to provide enhanced resolution of multiphase processes, particularly those i...

Measurements of atmospheric composition have been made over a remote rainforest landscape. A box model has previously been demonstrated to model the observed daytime chemistry well. However the box model is unable to explain the nocturnal measurements of relatively high [NO] and [O3], but relatively low observed [NO2]. It is shown that a onedimensional (1-D) column model with simple O3-NOx chem...

Model perception and understanding the spatial structure of organic molecules has been a source of difficulty for many chemistry students. To alleviate these problems we have introduced an innovative teaching/learning approach that employs a combination of virtual and physical models in an organic high school chemistry curriculum. We studied the effect of this approach on enhancing meaningful l...

The role and importance of nanoparticles for interstellar chemistry and beyond is explored within the framework of The Heterogeneous dust Evolution Model for Interstellar Solids (THEMIS), focusing on their active surface chemistry, the effects of nitrogen doping and the natural selection of interesting nanoparticle sub-structures. Nanoparticle-driven chemistry, and in particular the role of int...

Observationally derived transport diagnostics for the lowermost stratosphere and their application to the GMI chemistry and transport model S. E. Strahan, B. N. Duncan, and P. Hoor Goddard Earth Science and Technology Center, University of Maryland, Baltimore County, Baltimore, MD 21250, USA Max Planck Institute for Chemistry, Air Chemistry, Mainz, Germany Received: 8 January 2007 – Accepted: 2...

Cloud system resolving model study of the roles of deep convection for photo-chemistry in the TOGA COARE/CEPEX region M. Salzmann, M. G. Lawrence, V. T. J. Phillips, and L. J. Donner Max-Planck-Institute for Chemistry, Department of Atmospheric Chemistry, P.O. Box 3060, 55020 Mainz, Germany Department of Meteorology, University of Hawaii at Manoa, 2525 Correa Road, Honolulu, HI 96822, USA Geoph...

Three dimensional model calculations with the NASA/GSFC chemistry and transport model have been designed to consider the impact of heterogeneous processes occurring on polar stratospheric louds (PSC's) in the Arctic vortex on the HC1 distribution. By examining the HC1 concentration for a calculation with PSC's relative to a calculation with gas phase chemistry only, we infer the impact of polar...

to investigate the electromagnetic interaction of molecules inside the nanotubes, first, the structure of nanotubes b16n16 was optimized with hybrid density functional theory (b3lyp) using the epr-ii basis set, then cu, cu+, cu++ were located in nanotube and we studied the total energy, band gap energy, electrical potential, changes of band gap energy in terms of total energy and dipole moment ...