搜索结果: 1-11 共查到“大气科学 diffusion”相关记录11条 . 查询时间(0.16 秒)
A diffusion-induced transition in the phase separation of binary fluid mixtures subjected to a temperature ramp
diffusion-induced transition binary fluid mixtures temperature ramp
2011/8/16
Abstract: Demixing of binary fluids subjected to slow temperature ramps shows repeated waves of nucleation which arise as a consequence of the competition between generation of supersaturation by the ...
Results from the University of Toronto continuous flow diffusion chamber at ICIS 2007: instrument intercomparison and ice onsets for different aerosol types
the University of Toronto flow diffusion chamber ICIS 2007 ice onsets different aerosol types
2011/1/18
The University of Toronto continuous flow diffusion chamber (UT-CFDC) was used to study heterogeneous ice nucleation at the International Workshop on Comparing Ice Nucleation Measuring Systems (ICIS 2...
Kinetic multi-layer model of aerosol surface and bulk chemistry (KM-SUB): the influence of interfacial transport and bulk diffusion on the oxidation of oleic acid by ozone
Kinetic multi-layer model aerosol surface bulk chemistry interfacial transport and bulk diffusion oleic acid ozone
2010/8/12
In this study we explore and exemplify the effects of bulk diffusion on the rate of reactive gas uptake for a simple reference system, the ozonolysis of oleic acid particles, in comparison to experime...
A new modeling tool for the diffusion of gases in ice or amorphous binary mixture in the polar stratosphere and the upper troposphere
the diffusion of gases ice or amorphous binary mixture the polar stratosphere the upper troposphere
2010/8/12
To elaborate stratospheric ozone depletion processes, measurements of diffusion coefficients of selected gas phase molecules (i.e. HCl, CH3OH, HCOOH and CH3COOH; Katsambas et al., 1997; Kondratyev and...
Effects of resolution on the relative importance of numerical and physical horizontal diffusion in atmospheric composition modelling
numerical and physical horizontal diffusion atmospheric composition modelling
2010/8/12
Numerical diffusion induced by advection has a large influence on concentration of substances in atmospheric composition models. At coarse resolution numerical effects dominate, whereas at increasing ...
Parameterization of vertical diffusion and the atmospheric boundary layer height determination in the EMEP model
vertical diffusion atmospheric boundary layer height determination EMEP model
2010/2/1
This paper introduces two changes of the turbulence parameterization for the EMEP (European Monitoring and Evaluation Programme) Eulerian air pollution model: the replacement of the Blackadar in stabl...
Internal mixing of the organic aerosol by gas phase diffusion of semivolatile organic compounds
organic aerosol gas phase diffusion semivolatile organic compounds
2009/3/10
This paper shows that most of the so far identified constituents of the tropospheric organic particulate matter belong to a semivolatile fraction for which gas phase diffusion in the lower troposphere...
Evaluation of archived and off-line diagnosed vertical diffusion coefficients from ERA-40 with 222Rn simulations
diffusion coefficients ERA-40 222Rn
2009/3/10
Boundary layer turbulence has a profound influence on the distribution of tracers with sources or sinks at the surface. The 40-year ERA-40 meteorological data set of the European Centre for Medium-ran...
Variability of the Lagrangian turbulent diffusion in the lower stratosphere
Lagrangian turbulent diffusion lower stratosphere nitrous oxide
2009/2/11
Ozone and nitrous oxide are measured at high spatial and temporal resolution by instruments flying on the ER-2 NASA research aircraft. Comparing the airborne transects to reconstructions by ensemble o...
Behaviour of tracer diffusion in simple atmospheric boundary layer models
tracer diffusion atmospheric boundary layer models
2008/12/22
1-D profiles and time series from an idealised atmospheric boundary layer model are presented, which show agreement with boundary layer measurements of polar NOx. Diffusion models are increasingly bei...
Analytical Investigation in Brownian Diffusion of Airborne Particles with Slip/No-slip Interfaces
Diffusion Particle interactions, Concentration gradient Polydispersed aerosol
2016/3/30
The Brownian motion for an aerosol dispersion stating that suspending particles are rigid and
the surrounding fluid may slip and/or not slip at the solid-fluid interface was investigated
analyticall...