搜索结果: 1-15 共查到“大气物理学 The condensation”相关记录18条 . 查询时间(0.113 秒)
Response of Cloud Condensation Nuclei (> 50 nm) to changes in ion-nucleation
Response Cloud Condensation Nuclei changes ion-nucleation
2012/2/28
In experiments where ultraviolet light produces aerosols from trace amounts of ozone, sulphur dioxide, and water vapour, the number of additional small particles produced by ionization by gamma source...
A secondary organic aerosol formation model considering successive oxidation aging and kinetic condensation of organic compounds: global scale implications
A secondary organic aerosol formation model successive oxidation aging organic compounds global scale
2011/2/25
The widely used two-product secondary organic aerosol (SOA) formation model has been extended in this study to consider the volatility changes of secondary organic gases (SOG) arising from the aging p...
Sub-10 nm particle growth by vapor condensation – effects of vapor molecule size and particle thermal speed
Sub-10 nm particle vapor condensation vapor molecule size particle thermal speed
2010/10/21
The growth of freshly formed nanoparticles has been investigated. A new analytical expression based on a recently developed exact solution for the condensational growth rate has been derived. Based on...
Novel method of generation of Ca(HCO3)2 and CaCO3 aerosols and first determination of hygroscopic and cloud condensation nuclei activation properties
Ca(HCO3)2 and CaCO3 aerosols hygroscopic and cloud condensation nuclei activation properties
2010/9/21
Atmospheric mineral aerosols contain CaCO3 as a reactive component. A novel method to produce CaCO3 aerosol was developed by spraying Ca(HCO3)2 solution, which was generated from a CaCO3 suspension an...
Low sensitivity of cloud condensation nuclei to changes in the sea-air flux of dimethyl-sulphide
Low sensitivity cloud condensation nuclei the sea-air flux of dimethyl-sulphide
2010/8/25
The emission of dimethyl-sulphide (DMS) gas by phytoplankton and the subsequent formation of aerosol has long been suggested as an important climate regulation mechanism. The key aerosol quantity is t...
The impact of the 1783–1784 AD Laki eruption on global aerosol formation processes and cloud condensation nuclei
the 1783–1784 AD Laki eruption global aerosol formation processes cloud condensation nuclei
2010/8/16
The 1783–1784 AD Laki flood lava eruption commenced on 8 June 1783 and released 122 Tg of sulphur dioxide gas over the course of 8 months into the upper troposphere and lower stratosphere above Icelan...
Technical Note: Measuring condensation sink and ion sink of atmospheric aerosols with the electrical low pressure impactor (ELPI)
condensation sink ion sink atmospheric aerosols ELPI
2010/2/21
We investigate the suitability of ELPI for condensation sink and ion sink measurements. The aim is to find the simple calibration factors by which the measured ELPI current can be converted to condens...
Cloud condensation nuclei measurements in the marine boundary layer of the Eastern Mediterranean: CCN closure and droplet growth kinetics
marine boundary layer Eastern Mediterranean CCN closure droplet growth kinetics
2009/9/27
Measurements of cloud condensation nuclei (CCN) concentrations (cm−3) between 0.2 and 1.0% supersaturation, aerosol size distribution and chemical composition were performed at a remote marine s...
Applying the Condensation Particle Counter Battery（CPCB）——to study the water-affinity of freshly-formed 2–9 nm particles in boreal forest
CPCB water-affinity freshly-formed 2–9 nm particles boreal forest
2009/6/2
Measurements on the composition of nanometer-sized atmospheric particles are the key to understand which vapors participate in the secondary aerosol formation processes. Knowledge on these processes i...
Secondary organic aerosol (SOA) is a complex mixture of water and organic molecules. Its composition is determined by the presence of semi-volatile or non-volatile compounds, their saturation vapor pr...
The Cloud Condensation Nuclei（CCN）properties of 2-methyltetrols and C3-C6 polyols from osmolality and surface tension measurements
Cloud Condensation Nuclei CCN 2-methyltetrols C3-C6 polyols osmolality and surface tension measurements
2009/3/13
A significant fraction of the organic material in aerosols is made of highly soluble compounds such as sugars (mono- and polysaccharides) and polyols such as the 2-methyltetrols, methylerythritol and ...
Correlation between cloud condensation nuclei concentration and aerosol optical thickness in remote and polluted regions
cloud condensation nuclei concentration aerosol optical thickness polluted regions
2009/3/12
A large number of published and unpublished measurements of cloud condensation nuclei (CCN) concentrations and aerosol optical thickness (AOT) measurements have been analyzed. AOT measurements were ob...
Contribution of primary carbonaceous aerosol to cloud condensation nuclei: processes and uncertainties evaluated with a global aerosol microphysics model
primary carbonaceous aerosol cloud condensation nuclei global aerosol microphysics model
2008/12/23
This paper explores the impacts of primary carbonaceous aerosol on cloud condensation nuclei (CCN) concentrations in a global climate model with size-resolved aerosol microphysics. Organic matter (OM...
Modelling the cloud condensation nucleus activity of organic acids on the basis of surface tension and osmolality measurements
cloud condensation nucleus organic acids surface tension osmolality measurements
2008/12/18
In this study vapour pressure osmometry was used to determine water activity in the solutions of organic acids. The surface tension of the solutions was also monitored in parallel and then Köhler...
Effects of aerosol organics on cloud condensation nucleus (CCN) concentration and first indirect aerosol effect
aerosol organics CCN aerosol effect
2008/11/25
Aerosol microphysics, chemical composition, and CCN properties were measured on the Department of Energy Gulfstream-1 aircraft during the Marine Stratus/Stratocumulus Experiment (MASE) conducted over ...