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Radiocarbon analysis in an Alpine ice core: record of anthropogenic and biogenic contributions to carbonaceous aerosols in the past（1650–1940）
Radiocarbon analysis Alpine ice core anthropogenic and biogenic contributions carbonaceous aerosols
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2009/1/21
Long-term concentration records of carbonaceous particles (CP) are of increasing interest in climate research due to their not yet completely understood effects on climate. Nevertheless, only poor dat...
Tecnical Note: Analysis of non-regulated vehicular emissions by extractive FTIR spectrometry: tests on a hybrid car in Mexico City
non-regulated vehicular emissions extractive FTIR spectrometry hybrid car Mexico City
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2009/1/20
A methodology to acquire valuable information on the chemical composition and evolution of vehicular emissions is presented. The analysis of the gases is performed by passing a constant flow of a sam...
Changes in background aerosol composition in Finland during polluted and clean periods studied by TEM/EDX individual particle analysis
background aerosol composition Finland polluted and clean periods TEM/EDX individual particle
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2009/1/16
Aerosol samples were collected at a rural background site in southern Finland in May 2004 during pollution episode (PM1~16 µg m−3, backward air mass trajectories from south-east), intermed...
Aerosol composition and source apportionment in the Mexico City Metropolitan Area with PIXE/PESA/STIM and multivariate analysis
source apportionment Mexico City Metropolitan Area PIXE/PESA/STIM multivariate analysis
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2009/1/15
Aerosols play an important role in the atmosphere but are poorly characterized, particularly in urban areas like the Mexico City Metropolitan Area (MCMA). The chemical composition of urban particles m...
Separation of emitted and photochemical formaldehyde in Mexico City using a statistical analysis and a new pair of gas-phase tracers
emitted and photochemical formaldehyde Mexico City gas-phase tracers
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2009/1/15
Photochemical pollution control strategies require an understanding of photochemical oxidation precursors, making it important to distinguish between primary and secondary sources of HCHO. Estimates f...
Analysis of the frequency-dependent response to wave forcing in the extratropics
frequency-dependent wave forcing extratropics
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2009/1/15
A quasigeostrophic model for the frequency-dependent response of the zonal-mean flow to planetary-wave forcing at Northern Hemisphere (NH) midlatitudes is applied to 4-D-Var ECMWF analysis data for s...
A scaling analysis of ozone photochemistry
scaling analysis ozone photochemistry
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2009/1/15
A scaling analysis has been used to capture the integrated behaviour of several photochemical mechanisms for a wide range of precursor concentrations and a variety of environmental conditions. The Buc...
Refining temperature measures in thermal/optical carbon analysis
Refining temperature measures thermal/optical carbon analysis
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2009/1/14
Thermal/optical methods have been widely used for quantifying total carbon (TC), organic carbon (OC), and elemental carbon (EC) in ambient and source particulate samples. Thermally defined carbon frac...
Uncertainty analysis for estimates of the first indirect aerosol effect
Uncertainty analysis first indirect aerosol effect
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2009/1/14
The IPCC has stressed the importance of producing unbiased estimates of the uncertainty in indirect aerosol forcing, in order to give policy makers as well as research managers an understanding of the...
Stratosphere-troposphere exchange in a summertime extratropical low: analysis
Stratosphere-troposphere exchange summertime extratropical low
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2009/1/9
Ozone and carbon monoxide measurements sampled during two commercial flights in airstreams of a summertime midlatitude cyclone are analysed with a Lagrangian-based study (backward trajectories and a R...
Interactive chemistry in the Laboratoire de Météorologie Dynamique general circulation model: model description and impact analysis of biogenic hydrocarbons on tropospheric chemistry
Interactive chemistry Laboratoire de Météorologie Dynamique general circulation model biogenic hydrocarbons tropospheric chemistry
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2009/1/9
We present a description and evaluation of LMDz-INCA, a global three-dimensional chemistry-climate model, pertaining to its recently developed NMHC version. In this substantially extended version of t...
Sensitivity analysis by the adjoint chemistry transport model DRAIS for an episode in the Berlin Ozone（BERLIOZ）experiment
adjoint chemistry transport model DRAIS BERLIOZ
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2009/1/9
The Berlin Ozone Experiment (BERLIOZ) was carried out in summer 1998. One of its purposes was the evaluation of Chemistry Transport Models (CTM). CTM KAMM/DRAIS was one of the models considered. The d...
Single particle analysis of ice crystal residuals observed in orographic wave clouds over Scandinavia during INTACC experiment
Single particle analysis of ice crystal orographic wave clouds Scandinavia INTACC experiment
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2009/1/8
Individual ice crystal residual particles collected over Scandinavia during the INTACC (INTeraction of Aerosol and Cold Clouds) experiment in October 1999 were analyzed by Scanning Electron Microscopy...
Analysis and quantification of the diversities of aerosol life cycles within AeroCom
diversities of aerosol life cycles AeroCom
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2009/1/8
Simulation results of global aerosol models have been assembled in the framework of the AeroCom intercomparison exercise. In this paper, we analyze the life cycles of dust, sea salt, sulfate, black ca...
Modelling study of the impact of deep convection on the utls air composition - Part I: Analysis of ozone precursors
deep convection utls air composition ozone precursors
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2009/1/7
The present paper (part I) is devoted to the analysis of the ozone precursors (CO, NOx and non-methane volatile organic compounds) and HOx in the UTLS. The simulation results show that the distributio...