搜索结果: 1-15 共查到“理学 particle formation”相关记录43条 . 查询时间(0.078 秒)
First long-term study of particle number size distributions and new particle formation events of regional aerosol in the North China Plain
particle number size new particle formation regional aerosol the North China Plain
2011/2/25
Atmospheric particle number size distributions (size range 0.003–10 μm) were measured between March 2008 and August 2009 at Shangdianzi (SDZ), a rural research station in the North China Plain. These ...
On the roles of sulphuric acid and low-volatility organic vapours in the initial steps of atmospheric new particle formation
sulphuric acid low-volatility organic vapours atmospheric particle formation
2010/12/20
Sulphuric acid and organic vapours have been identified as the key components in the ubiquitous secondary new particle formation in the atmosphere. In order to assess their relative contribution and s...
Ultrafine particle formation in the inland sea breeze airflow in Southwest Europe
Ultrafine particle formation the inland sea breeze airflow Southwest Europe
2010/10/21
Studies on ultrafine particles (diameter < 100nm) and air quality have mostly focused on vehicle exhaust emissions and on new particle formation in "clean" ambient air. Here we present a study focused...
New particle formation and ultrafine charged aerosol climatology at a high altitude site in the Alps (Jungfraujoch, 3580 m a.s.l., Switzerland)
New particle formation ultrafine charged aerosol climatology a high altitude site the Alps
2010/10/11
We investigate the formation and growth of charged aerosols clusters at Jungfraujoch, in the Swiss Alps (3580 m a.s.l.), the highest altitude site of the European EUCAARI project intensive campaign. C...
An improved criterion for new particle formation in diverse atmospheric environments
new particle formation diverse atmospheric environments
2010/9/21
A dimensionless theory for new particle formation (NPF) was developed, using an aerosol population balance model incorporating recent developments in nucleation rates and measured particle growth rate...
Particle formation and growth at five rural and urban sites
Particle formation and growth five rural and urban sites
2010/9/1
Ultrafine particle (UFP) number and size distributions were simultaneously measured at five urban and rural sites during the summer of 2007 in Ontario, Canada as part of the Border Air Quality and Met...
EUCAARI ion spectrometer measurements at 12 European sites – analysis of new particle formation events
EUCAARI ion spectrometer measurements 12 European sites new particle formation events
2010/9/1
We present comprehensive results on continuous atmospheric cluster and particle measurements in the size range ~1–42 nm within the European Integrated project on Aerosol Cloud Climate and Air Quality ...
Laboratory study on new particle formation from the reaction OH + SO2: influence of experimental conditions, H2O vapour, NH3 and the amine tert-butylamine on the overall process
Laboratory study new particle formation the reaction OH + SO2 H2O vapour NH3 the amine tert-butylamine the overall process
2010/8/16
Nucleation experiments starting from the reaction of OH radicals with SO2 have been performed in the IfT-LFT flow tube under atmospheric conditions at 293±0.5 K for a relative humidity of 13–61%. The ...
New particle formation events measured on board the ATR-42 aircraft during the EUCAARI campaign
New particle formation events the ATR-42 aircraft the EUCAARI campaign
2010/8/16
Aerosol properties were studied during an intensive airborne measurement campaign that took place at Rotterdam in Netherlands in May 2008 within the framework of the European Aerosol Cloud Climate and...
The roles of sulfuric acid in new particle formation and growth in the mega-city of Beijing
sulfuric acid new particle formation and growth the mega-city of Beijing
2010/8/13
Simultaneous measurements of gaseous sulfuric acid and particle number size distributions were performed to investigate aerosol nucleation and growth during CAREBeijing-2008. The analysis of the measu...
Explaining global surface aerosol number concentrations in terms of primary emissions and particle formation
global surface aerosol number primary emissions particle formation
2010/8/13
We synthesised observations of total particle number (CN) concentration from 36 sites around the world. We found that annual mean CN concentrations are typically 300–2000 cm−3 in the marine boun...
Observations of turbulence-induced new particle formation in the residual layer
turbulence new particle formation the residual layer
2010/8/12
Aerosol particle measurements in the atmospheric boundary layer performed by a helicopter-borne measurement payload and by a lidar system from a case study during the IMPACT field campaign in Cabauw (...
Hygroscopicity and chemical composition of Antarctic sub-micrometre aerosol particles and observations of new particle formation
Hygroscopicity and chemical composition Antarctic sub-micrometre aerosol particles new particle formation
2010/8/12
The Antarctic near-coastal sub-micrometre aerosol particle features in summer were characterised based on measured data on aerosol hygroscopicity, size distributions, volatility and chemical ion and o...
Parametric studies of contrail ice particle formation in jet regime using microphysical parcel modeling
contrail ice particle formation jet regime microphysical parcel modeling
2010/8/12
Condensation trails (contrails) formed from water vapor emissions behind aircraft engines are the most uncertain components of the aviation impacts on climate change. To gain improved knowledge of con...
Iodine-mediated coastal particle formation: an overview of the Reactive Halogens in the Marine Boundary Layer (RHaMBLe) Roscoff coastal study
Iodine-mediated coastal particle formation the Reactive Halogens the Marine Boundary Layer (RHaMBLe) Roscoff coastal study
2010/8/12
This paper presents a summary of the measurements made during the heavily-instrumented Reactive Halogens in the Marine Boundary Layer (RHaMBLe) coastal study in Roscoff on the North West coast of Fran...