搜索结果: 46-60 共查到“理学 boundary layer”相关记录192条 . 查询时间(0.156 秒)
Closing the dimethyl sulfide budget in the tropical marine boundary layer during the Pacific Atmospheric Sulfur Experiment
dimethyl sulfide budget tropical marine boundary layer Pacific Atmospheric Sulfur Experiment
2009/11/19
Fourteen research flights were conducted with the National Center for Atmospheric Research (NCAR) C-130 near Christmas Island (2° N, 157° W) during the summer of 2007 as part of the Pacific Atmospheri...
On the properties of turbulent boundary layer over polar cusps
properties of turbulent boundary layer polar cusps
2009/11/12
We study properties of nonlinear magnetic fluctuations in the turbulent boundary layer (TBL) over polar cusps during a typical TBL crossing on 19 June 1998. Interball-1data in the summer TBL are compa...
Numerical wind wave model with a dynamic boundary layer
wind wave model dynamic boundary layer
2009/11/12
A modern version of a numerical wind wave model of the fourth generation is constructed for a case of deep water. The following specific terms of the model source function are used: (a) a new analytic...
Some theoretical models for solitary structures of boundary layer waves
Some theoretical models solitary structures boundary layer waves
2009/11/11
Solitary electrostatic structures have been observed in and around auroral zone field lines at various altitudes ranging from close to the ionosphere, to the magnetopause low-latitude boundary layer (...
Using ground-based solar and lunar infrared spectroscopy to study the diurnal trend of carbon monoxide in the Mexico City boundary layer
ground-based solar lunar infrared spectroscopy diurnal trend carbon monoxide Mexico City boundary layer
2009/11/9
Carbon monoxide (CO) is an important pollutant in urban agglomerations. Quantifying the total burden of this pollutant in a megacity is challenging because not only its surface concentration but also ...
Intensity of convective motions in marine atmospheric boundary layer retrieved from ocean surface radar imagery
Intensity of convective motions marine atmospheric boundary layer ocean surface radar imagery
2009/11/9
The paper focuses on the occurrence and development of coherent structures observed in the atmosphere above ocean under natural conditions. Microwave imaging radars are suggested as data take instrume...
Influence of stability on the flux-profile relationships for wind speed,Φm,and temperature,Φh,for the stable atmospheric boundary layer
Influence of stability flux-profile relationships wind speed Φm Φh atmospheric boundary layer
2009/11/9
Data from SABLES98 experimental campaign have been used in order to study the influence of stability (from weak to strong stratification) on the flux-profile relationships for momentum, Φm, and heat, ...
On the dependence of third- and fourth-order moments on stability in the turbulent boundary layer
third- and fourth-order moments on stability turbulent boundary layer
2009/11/9
Analysis of published data on the third- and fourth-order moments of vertical velocity in the atmospheric boundary layer is performed, and it is shown that turbulence is non-Gaussian even when almost ...
Scaling properties of velocity and temperature spectra above the surface friction layer in a convective atmospheric boundary layer
properties of velocity temperature spectra surface friction layer atmospheric boundary layer
2009/11/3
We report velocity and temperature spectra measured at nine levels from 1.42 meters up to 25.7 m over a smooth playa in Western Utah. Data are from highly convective conditions when the magnitude of t...
Structure function analysis and intermittency in the atmospheric boundary layer
Structure function analysis intermittency atmospheric boundary layer
2009/11/2
Data from the SABLES98 experimental campaign (Cuxart et al., 2000) have been used in order to study the relationship of the probability distribution of velocity increments (PDFs) to the scale and the ...
Channelling of high-latitude boundary-layer flow
Channelling high-latitude boundary-layer flow
2009/10/30
Due to the stability of the boundary-layer stratification, high-latitude winds over complex terrain are strongly affected by blocking and channelling effects. Consequently, at many low-lying communiti...
Application of a GOY model to atmospheric boundary layer data
GOY model atmospheric boundary layer data
2009/10/30
This article analyzes the possibility of applying a GOY theoretical model to atmospheric boundary layer data. Bearing this in mind, relative scaling exponents of velocity structure functions are used ...
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...
Elevated nitrogen-containing particles observed in Asian dust aerosol samples collected at the marine boundary layer of the Bohai Sea and the Yellow Sea
Elevated nitrogen-containing particles Asian dust aerosol samples Bohai Sea Yellow Sea
2009/9/23
Low-Z particle electron probe X-ray microanalysis (low-Z particle EPMA) shows powerful advantages for the characterization of ambient particulate matter in environmental and geological applications. B...
Observations of high rates of NO2-HONO conversion in the nocturnal atmospheric boundary layer in Kathmandu, Nepal
NO2-HONO conversion nocturnal atmospheric boundary layer Kathmandu Nepal
2009/9/11
Nitrous acid (HONO) plays a significant role in the atmosphere, especially in the polluted troposphere. Its photolysis after sunrise is an important source of hydroxyl free radicals (OH). Measurements...