Introduction Conclusions References Tables Figures

Bromine may act as a catalyst for recombination of ozone and could be more efficient than either nitric oxide or chlorine. The lower atmosphere contains small concentrations of gaseous bromine produced in part by marine activity, in part by volatilization of particulate material released during the combustion of leaded gasoline, with an additional contribution due to the use of methyl bromide a...

A model describing chemical reactions in the stratosphere ([1]) is studied with MCMC methods. The model is a large ODE system consisting of 33 components, roughly 150 reactions and 150 reaction rate parameters. Thus, it is a good case study for adaptive MCMC methods designed for high-dimensional problems. In this case, the Delayed Rejection Adaptive Metropolis (DRAM, [2]) is succesfully applied...

Recent field observations have shown that the atmospheric plumes of quiescently degassing volcanoes are chemically very active, pointing to the role of chemical cycles involving halogen species and heterogeneous reactions on aerosol particles that have previously been unexplored for this type of volcanic plumes. Key features of these measurements can be reproduced by numerical models such as th...

Venus’ atmosphere has a rich chemistry involving interactions among sulfur, chlorine, nitrogen, hydrogen, and oxygen radicals. The chemical regimes in the atmosphere range from ion-neutral reactions in the ionosphere to photochemistry in the middle atmosphere to thermal equilibrium chemistry and surface-atmosphere reactions in the lower atmosphere. This variety makes Venus an important planet t...

Technical Note: Review of methods for linear least-squares fitting of data and application to atmospheric chemistry problems C. A. Cantrell National Center for Atmospheric Research, Atmospheric Chemistry Division, 1850 Table Mesa Drive, Boulder, CO 80305, USA Received: 13 February 2008 – Accepted: 21 February 2008 – Published: 1 April 2008 Correspondence to: C. A. Cantrell ([email protected]) P...

General comments This paper deals with the validation of a new atmospheric chemistry satellite mission (ACE) for an important atmospheric species (N2O). This theme is of high significance for the atmospheric chemistry and physics science community and fits well into the ACP journal scope. The adopted validation concepts are of excellent scientific quality, and the study is based upon a full var...

Cooperative Institute for Research in the Environmental Sciences (CIRES), University of Colorado at Boulder, Boulder, CO Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, CO National Center for Atmospheric Research – Atmospheric Chemistry Division, Boulder, CO Meteo France / CNRM-GREI, Toulouse, France Atmospheric Sciences Research Center, University at Alban...

Constraining tropospheric mixing timescales using airborne observations and numerical models P. Good, C. Giannakopoulos, F. M. O’Connor, S. R. Arnold, M. de Reus, and H. Schlager National Observatory of Athens, Greece Centre for Atmospheric Science, Cambridge, UK School of the Environment, University of Leeds, UK Max-Planck-Institute for Chemistry, Atmospheric Chemistry Department, Mainz, Germa...

[1] In order to validate the reported precision of space‐based atmospheric composition measurements, validation studies often focus on measurements in the tropical stratosphere, where natural variability is weak. The scatter in tropical measurements can then be used as an upper limit on single‐profile measurement precision. Here we introduce a method of quantifying the scatter of tropical measu...