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Middle atmosphere water vapour and dynamical features in aircraft measurements and ECMWF analyses
Middle atmosphere water vapour dynamical features aircraft measurement ECMWF
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2008/12/23
The European Centre for Medium-Range Weather Forecasts (ECMWF) provides global analyses of atmospheric humidity from the ground to the lower mesosphere. Unlike in the troposphere, in the stratosphere ...
A study of the effect of overshooting deep convection on the water content of the TTL and lower stratosphere from Cloud Resolving Model simulations
overshooting deep convection TTL lower stratosphere Cloud Resolving Model
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2008/12/19
Simulations of overshooting, tropical deep convection using a Cloud Resolving Model with bulk microphysics are presented in order to examine the effect on the water content of the TTL (Tropical Tropop...
Technical Note: Improved total atmospheric water vapour amount determination from near-infrared filter measurements with sun photometers
atmospheric water vapour near-infrared filter measurements sun photometer
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2008/12/18
In this work we explore the effect of the contribution of the solar spectrum to the recorded signal in wavelengths outside the typical 940-nm filter's bandwidth. We employ gaussian-shaped filters as w...
Cloud condensation nucleus (CCN) behavior of organic aerosol particles generated by atomization of water and methanol solutions
Cloud condensation nucleus organic aerosol particles atomization methanol
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2008/12/11
Cloud condensation nucleus (CCN) experiments were carried out for malonic acid, succinic acid, oxalacetic acid, DL-malic acid, glutaric acid, DL-glutamic acid monohydrate, and adipic acid, using both ...
Statistical analysis of water vapour and ozone in the UT/LS observed during SPURT and MOZAIC
water vapour ozone UT/LS SPURT MOZAIC
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2008/11/26
A statistical analysis for the comparability of water (H2O) and ozone (O3) data sets sampled during the SPURT aircraft campaigns and the MOZAIC passenger aircraft flights is presented. The Kolmogorof...
The effect of temperature and water on secondary organic aerosol formation from ozonolysis of limonene, Δ3-carene and α-pinene
secondary organic aerosol ozonolysis limonene Δ3-carene α-pinene
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2008/11/25
The effect of reaction temperature and how water vapour influences the formation of secondary organic aerosol (SOA) in ozonolysis of limonene, Δ3-carene and α-pinene, both regarding number and mass of...
Size distributions, sources and source areas of water-soluble organic carbon in urban background air
water-soluble organic carbon urban background air
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2008/11/20
This paper represents the results of one year long measurement period of the size distributions of water-soluble organic carbon (WSOC), inorganic ions and gravimetric mass of particulate matter. Measu...
Ternary solution of sodium chloride, succinic acid and water; surface tension and its influence on cloud droplet activation
sodium chloride succinic acid cloud droplet activation
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2008/11/14
Surface tension of ternary solution of sodium chloride, succinic acid and water was measured as a function of both composition and temperature by using the capillary rise technique. Both sodium chlori...
On the volatility and production mechanisms of newly formed nitrate and water soluble organic aerosol in Mexico City
nitrate water soluble organic aerosol Mexico City
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2008/11/13
Measurements of atmospheric gases and fine particle chemistry were made in the Mexico City Metropolitan Area (MCMA) at a site ~30 km down wind of the city center. Ammonium nitrate (NH4NO3) dominated t...
Validation of stratospheric water vapour measurements from the airborne microwave radiometer AMSOS
stratospheric water vapour airborne microwave radiometer AMS
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2008/11/11
We present the validation of a water vapour dataset obtained by the Airborne Microwave Stratospheric Observing System AMSOS, a passive microwave radiometer operating at 183 GHz. Vertical profiles are ...
Preliminary results of GOME-2 water vapour retrievals and first applications in polar regions
GOME-2 water vapour polar regions
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2008/11/3
Global total water vapour columns have been derived from measurements of the Global Ozone Monitoring Experiment 2 (GOME-2) on MetOp. For this purpose, the Air Mass Corrected Differential Optical Absor...
Trends and variability of midlatitude stratospheric water vapour deduced from the re-evaluated Boulder balloon series and HALOE
midlatitude stratospheric water vapour re-evaluated Boulder balloon series HALOE
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2008/10/31
This paper presents an updated trend analysis of water vapour in the lower midlatitude stratosphere from the Boulder balloon-borne NOAA frostpoint hygrometer measurements and from the Halogen Occulati...
Investigation of molar volume and surfactant characteristics of water-soluble organic compounds in biomass burning aerosol
molar volume surfactant characteristics water-soluble organic compound biomass burning aerosol
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2008/10/30
In this study, we characterize the CCN activity of the water-soluble organics in biomass burning aerosol. The aerosol after collection upon filters is dissolved in water using sonication. Hydrophobic ...
Analysis of global water vapour trends from satellite measurements in the visible spectral range
global water vapour trends satellite measurement visible spectral range
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2008/10/28
Global water vapour total column amounts have been retrieved from spectral data provided by the Global Ozone Monitoring Experiment (GOME) flying on ERS-2, which was launched in April 1995, and the SCa...
The relationship between tropospheric wave forcing and tropical lower stratospheric water vapor
tropospheric wave tropical lower stratospheric water vapor
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2008/10/28
Using water vapor data from HALOE and SAGE II, an anti-correlation between planetary wave driving (here expressed by the mid-latitude eddy heat flux at 50 hPa added from both hemispheres) and tropica...