Planetary Boundary Layer
Evidence of tropospheric layering: interleaved stratospheric and planetary boundary layer intrusions
... extracted from the maritime planetary boundary layer by warm conveyor belts associ- ated with two extratropical lows and have residence times of about 2 and 5.75 days, respectively. The event took ...
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On the role of the planetary boundary layer depth in the climate system
... The planetary boundary layer (PBL) is a part of the Earth’s atmosphere where turbulent fluxes dominate vertical mixing and constitute an important part of the energy ...
7
Development of efficient GPU parallelization of WRF Yonsei University planetary boundary layer scheme
... (YSU) planetary boundary layer (PBL) scheme, which is one of the physical models in ...well-mixed boundary layer and the more sta- ble layer above, and thus provides an ...
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TURBULENT EDDY DIFFUSIVITIES FOR A PLANETARY BOUNDARY LAYER GENERATED BY THERMAL AND MECHANICAL EFFECTS
... ABSTRACT. To estimate the superficial concentration of contaminants an eulerian model of dispersion was used, where the main scheme is the diffusion-advection equation that employs turbulent eddy diffusivity. The aim of ...
10
Aerosol lidar observations and model calculations of the planetary boundary layer evolution over Greece, during the March 2006 total solar eclipse
... the planetary boundary layer (PBL) is the at- mospheric range closer to the earth’s surface, where mass, energy and momentum transport towards other parts of the atmosphere take place via a ...
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Lidar measurement of planetary boundary layer height and comparison with microwave profiling radiometer observation
... of the backscatter signal can minimize this problem but inevitably degrades the signal of interest. Steyn et al. (1999) presented an approach that fit an idealized profile to the observed one, another one widely used is ...
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Lidar measurement of planetary boundary layer height and comparison with microwave profiling radiometer observation
... The BLH over the city of Lanzhou and its suburb rural area Yuzhong has been obtained using a modified wavelet tech- nology and lidar data. The results reveal the effectiveness of this method for Yuzhong. But our study ...
8
Vertical profiling of aerosol hygroscopic properties in the planetary boundary layer during the PEGASOS campaigns
... The aerosol sampled in the Netherlands did not show any altitude dependent char- acteristics because only the fully mixed layer or the entrainment zone between mixed and the residual layer were probed. The ...
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Using the WRF Model to Refine NCEP CFSv2 Reanalysis Atmospheric Profile: A Southern Brazil Test Case
... ABSTRACT. The vertical distribution of atmospheric parameters is pivotal to understand atmospheric dynamic processes. This study analyzes the use of the Weather Research and Forecasting (WRF) model to generate ...
27
Boundary layer structure and decoupling from synoptic scale flow during NAMBLEX
... and planetary boundary layer structure observed dur- ing the NAMBLEX field campaign to aid interpretation of the chemical and aerosol ...internal boundary layer was decoupled from the ...
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Latitude-time variations of atmospheric column-average dry air mole fractions of CO<sub>2</sub>, CH<sub>4</sub> and N<sub>2</sub>O
... at continental sites, which are attributed to model transport errors within the planetary boundary layer or in the stratosphere or model errors in the seasonal amplitude of surface fluxe[r] ...
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Improving subtropical boundary layer cloudiness in the 2011 NCEP GFS
... and planetary boundary layer parameterisations to make them more con- sistent with current knowledge of these processes and to re- duce the low cloud ...of boundary layer ...reduce ...
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Feasible domain of Walker's unsteady wall-layer model for the velocity profile in turbulent flows
... Hatziavramidis and Hanratty (1979) discuss the numerical solution of the unsteady Navier-Stokes equations in the viscous wall region with simplications resulting from the "slender body" assumption. Their model ...
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Unsteady Similarity Solution of Free convective boundary layer flow over porous plate with variable properties considering viscous dissipation and Slip Effect
... The equations (8) and (9) constitute a non-linear coupled boundary value problem prescribed at two boundaries, the analytical solution of which is not feasible. Therefore, these equations have been solved ...
6
Surface heterogeneity impacts on boundary layer dynamics via energy balance partitioning
... Abstract. The role of land-atmosphere interactions under heterogeneous surface conditions is investigated in order to identify mechanisms responsible for altering surface heat and moisture fluxes. Twelve coupled land ...
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Description and implementation of a MiXed Layer model (MXL, v1.0) for the dynamics of the atmospheric boundary layer in the Modular Earth Submodel System (MESSy)
... For the lower boundary conditions, there are two possi- bilities. On one hand, MXL/MESSy offers the possibility to use interactive emission (via the ONEMIS (Kerkweg et al., 2006b) and MEGAN (Guenther et al., 2006) ...
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Halogens and their role in polar boundary-layer ozone depletion
... acronyms in the table: Arctic Gas and Aerosol Sampling Program (AGASP), Polar Sunrise Ex- periment (PSE), Tropospheric Ozone Production during the Spring Equinox (TOPSE), NItrogen Cycle and Effects on the oxidation of ...
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Forced convective heat transfer in boundary layer flow of Sisko fluid over a nonlinear stretching sheet.
... The major focus of this article is to analyze the forced convective heat transfer in a steady boundary layer flow of Sisko fluid over a nonlinear stretching sheet. Two cases are studied, namely (i) the ...
12
High time resolution boundary layer description using combined remote sensing instruments
... The combination of weather radar, radiometer, wind pro- filer, GPS sensors allowed us to follow 2 important mecha- nisms: latent heat exchange and thermal mixing. However, care has to be taken when interpreting ...
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