搜索结果: 1-15 共查到“理学 tracer”相关记录91条 . 查询时间(0.137 秒)
Passive tracer in a slowly decorrelating random flow with a large mean
Passive tracer slowly decorrelating random flow large mean
2015/7/14
We consider the movement of a particle advected by a random flow of the form v + δF(x), with v ∈ Rd a constant drift, F(x) – the fluctuation – given by a zero mean, stationary random field and δ 1 s...
On asymptotics of a tracer advected in a locally self-similar,correlated flow
On asymptotics tracer advected locally self-similar correlated flow
2015/7/14
In this paper we consider the motion of a tracer in a flow that is locally self-similar and whose correlations decay at infinity but at the rate that does not guarantee that the flow does not have ”me...
Comparison of the ensemble Kalman filter and 4D-Var assimilation methods using a stratospheric tracer transport model
the ensemble Kalman filter 4D-Var assimilation methods stratospheric tracer transport model
2014/12/19
An ensemble Kalman filter (EnKF) assimilation method is applied to the tracer transport using the same stratospheric transport model as in the four-dimensional variational (4D-Var) assimilation system...
Global mass fixer algorithms for conservative tracer transport in the ECMWF model
Global mass fi xer algorithms conservative tracer transport
2014/12/18
Various mass fixer algorithms (MFAs) have been
implemented in the Integrated Forecasting System (IFS) of
the European Centre for Medium-Range Weather Forecasts
(ECMWF) to ensure mass conserva...
Downscale cascades in tracer transport test cases: an intercomparison of the dynamical cores in the Community Atmosphere Model CAM5
tracer transport test cases the dynamical cores Community Atmosphere Model CAM5
2014/12/10
The accurate modeling of cascades to unresolved scales is an important part of the tracer transport component of dynamical cores of weather and climate models. This paper aims to investigate the abili...
Mass-conserving tracer transport modelling on a reduced latitude-longitude grid with NIES-TM
Mass-conserving tracer transport modelling a reduced latitude-longitude grid NIES-TM
2014/12/9
The need to perform long-term simulations with reasonable accuracy has led to the development of mass-conservative and efficient numerical methods for solving the transport equation in forward and inv...
Are similar worms different? A comparative tracer study on bioturbation in the three sibling species Marenzelleria arctia, M. viridis, and M. neglecta from the Baltic Sea
worms different bioturbation
2014/4/2
The invasive spionid polychaetes of the genus Marenzelleria spp., consisting of the three sibling species M.
neglecta, M. viridis, and M. arctia, has been found in the Baltic Sea since the 1980s. Bec...
First Passage Times for a Tracer Particle in Single File Diffusion and Fractional Brownian Motion
First Passage Times Tracer Particle Single File Diffusion Fractional Brownian Motion Biological Physics
2012/5/29
We investigate the full functional form of the first passage time density (FPTD) of a tracer particle in a single-file diffusion (SFD) system whose population is: (i) homogeneous, i.e., all particles ...
Octanol-water partition coefficients (Kow) vs. pH for fluorescent dye tracers (fluorescein, eosin Y), and implications for hydrologic tracer tests
fluorescein eosin Y tracer octanol-water retardation
2017/4/11
Values of the octanol-water partition coefficient (Kow) have been measured vs. pH for two fluorescent dyes (fluorescein,
eosin Y) commonly used in hydrologic tracer tests. Values for both fluorescent...
The spectral slope coefficient of chromophoric dissolved organic matter (S275–295) as a tracer of terrigenous dissolved organic carbon in river-influenced ocean margins
The spectral slope coefficient chromophoric dissolved organic matter S275–295 tracer of terrigenous dissolved organic carbon river-influenced ocean margins
2014/4/4
The present study demonstrates that the spectral slope coefficient of chromophoric dissolved organic matter (CDOM) between 275 nm and 295 nm (S275–295) can be used as a tracer of the percent terrigeno...
The spectral slope coefficient of chromophoric dissolved organic matter (S275–295)asa tracer of terrigenous dissolved organic carbon in river-influenced ocean margins
spectral slope coefficient chromophoric dissolved organic matter terrigenous dissolved organic carbon river-influenced ocean margins
2014/4/3
The present study demonstrates that the spectral slope coefficient of chromophoric dissolved organic matter(CDOM) between 275 nm and 295 nm (S275–295) can be used as a tracer of the percent terrigenou...
Scaling laws of passive tracer dispersion in the turbulent surface layer
Scaling laws passive tracer dispersion the turbulent surface layer
2011/8/18
Abstract: Experimental results for passive tracer dispersion in the turbulent surface layer under stable conditions are presented. In this case, the dispersion of tracer particles is determined by the...
Tracer concentration profiles measured in central London as part of the REPARTEE campaign
Tracer concentration central London the REPARTEE campaign
2011/1/19
There have been relatively few tracer experiments carried out that have looked at vertical plume spread in urban areas. In this paper we present results from two tracer (cyclic perfluorocarbon) experi...
Modeling CO Emission: I. CO as a Column Density Tracer and the X-Factor in Molecular Clouds
Modeling CO Emission X-Factor Molecular Clouds
2010/11/12
Theoretical and observational investigations have indicated that the abundance of car-bon monoxide (CO) is very sensitive to intrinsic properties of the gaseous medium,
such as density, metallicity, ...
Transport timescales and tracer properties in the extratropical UTLS
Transport timescales tracer properties the extratropical UTLS
2010/9/1
A comprehensive evaluation of seasonal backward trajectories initialized in the northern hemisphere lowermost stratosphere (LMS) has been performed to investigate the factors that determine the tempor...