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First retrieval of global water vapour column amounts from SCIAMACHY measurements
retrieval water vapour SCIAMACHY measurements
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2009/2/20
Global water vapour column amounts have been derived for the first time from measurements of the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) on the European envir...
Real-time measurements of ammonia, acidic trace gases and water-soluble inorganic aerosol species at a rural site in the Amazon Basin
ammonia acidic trace gases water-soluble inorganic aerosol species Amazon Basin
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2009/2/19
A detailed description of the WAD/SJAC and the analytical
procedures is given elsewhere (Slanina et al., 2001; Wyers
et al., 1993). A simplified sketch of the sampling system
is shown in Fig. 2. Th...
A comprehensive evaluation of water uptake on atmospherically relevant mineral surfaces: DRIFT spectroscopy, thermogravimetric analysis and aerosol growth measurements
water uptake DRIFT spectroscopy thermogravimetric analysis aerosol growth measurements
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2009/2/19
The hygroscopicity of mineral aerosol samples has been examined by three independent methods: diffuse reflectance infrared Fourier transform spectroscopy, thermogravimetric analysis and differential m...
Seasonal variations of the water soluble organic carbon mass fraction of aerosol in two valleys of the French Alps
water soluble organic carbon mass fraction aerosol valleys of the French Alp
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2009/2/18
Concentrations of Water Soluble Organic Carbon (WSOC) and WSOC fraction to Organic Carbon (OC) were measured at two urban sites in valleys of the French Alps during a period of two and a half years. C...
Application of several activity coefficient models to water-organic-electrolyte aerosols of atmospheric interest
several activity coefficient models water-organic-electrolyte aerosols atmospheric interest
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2009/2/17
In this work, existing and modified activity coefficient models are examined in order to assess their capabilities to describe the properties of aqueous solution droplets relevant in the atmosphere. F...
Impact of palmitic acid coating on the water uptake and loss of ammonium sulfate particles
palmitic acid ammonium sulfate particles
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2009/2/12
While water insoluble organics are prevalent in the atmosphere, it is not clear how the presence of such species alters the chemical and physical properties of atmospheric aerosols. Here we use a com...
Combustion characteristics of water-insoluble elemental and organic carbon in size selected ambient aerosol particles
Combustion characteristics carbon ambient aerosol particles
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2009/2/12
Combustion of elemental carbon (EC) and organic carbon (OC) contained in ambient aerosol matter was explored using scanning electron microscopy (SEM) in combination with energy dispersive X-ray analys...
Validation of SCIAMACHY AMC-DOAS water vapour columns
SCIAMACHY AMC-DOAS water vapour columns ECMWF
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2009/2/12
A first validation of water vapour total column amounts derived from measurements of the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) in the visible spectral regio...
Water activity in polyol/water systems: new UNIFAC parameterization
Water activity polyol/water systems UNIFAC parameterization
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2009/2/11
Water activities of a series of polyol/water systems were measured with an AquaLab dew point water activity meter at 298K. The investigated polyols with carbon numbers from n=2-7 are all in liquid sta...
Simulation of stratospheric water vapor trends: impact on stratospheric ozone chemistry
stratospheric water vapor trends stratospheric ozone chemistry
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2009/2/9
A transient model simulation of the 40-year time period 1960 to 1999 with the coupled climate-chemistry model (CCM) ECHAM4.L39(DLR)/CHEM shows a stratospheric water vapor increase over the last two d...
Water vapour and ozone profiles in the midlatitude upper troposphere
Water vapour ozone profiles midlatitude upper troposphere
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2009/2/8
We present an investigation of upper tropospheric humidity profiles measured with a standard radiosonde, the Vaisala RS80-A, and a commercial frost-point hygrometer, the Snow White. Modifications to t...
Effects of SO2 oxidation on ambient aerosol growth in water and ethanol vapours
SO2 oxidation ambient aerosol growth water ethanol vapours
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2009/2/7
Hygroscopicity (i.e. water vapour affinity) of atmospheric aerosol particles is one of the key factors in defining their impacts on climate. Condensation of sulphuric acid onto less hygroscopic partic...
To what extent can aerosol water explain the discrepancy between model calculated and gravimetric PM10 and PM2.5?
extent can aerosol water PM10 PM2.5
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2009/2/6
Inter-comparisons of European air quality models show that regional transport models, including the EMEP (Co-operative Programme for monitoring and evaluation of the long-range transmission of air pol...
Seasonal and diurnal characteristics of water soluble inorganic compounds in the gas and aerosol phase in the Zurich area
water soluble inorganic compounds gas and aerosol phase Zurich area
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2009/1/8
Gas and aerosol samples were taken using a wet effluent diffusion denuder/aerosol collector (WEDD/AC) coupled to ion chromatography (IC) in the city of Zurich, Switzerland from August to September 200...
Water vapour profiles by ground-based FTIR spectroscopy: study for an optimised retrieval and its validation
Water vapour profiles ground-based FTIR spectroscopy optimised retrieval
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2009/1/4
The sensitivity of ground-based instruments measuring in the infrared with respect to tropospheric water vapour content is generally limited to the lower and middle troposphere. The large vertical gra...