نتایج جستجو برای: atmospheric boundary-layer

تعداد نتایج: 489371  

Journal: :Wind Engineers, JAWE 2006

Journal: :فیزیک زمین و فضا 0
فرهنگ احمدی گیوی سمانه ثابت قدم عباسعلی علی اکبری بیدختی

mixed layer is a part of the atmospheric boundary layer in which pollutants are uniformly distributed. it is sensitive to the earth’s surface, controls the flow of heat and momentum between the surface and the free atmosphere, thus playing a key role in atmospheric circulation. most of atmospheric pollution models require the height of the mixed layer as an input to determine the depth of atmos...

Journal: :Reviews of Geophysics 2011

2011
A. Petrosyan B. Galperin S. E. Larsen S. R. Lewis A. Määttänen P. L. Read N. Renno L. P. H. T. Rogberg H. Savijärvi T. Siili A. Spiga A. Toigo L. Vázquez

[1] The planetary boundary layer (PBL) represents the part of the atmosphere that is strongly influenced by the presence of the underlying surface and mediates the key interactions between the atmosphere and the surface. On Mars, this represents the lowest 10 km of the atmosphere during the daytime. This portion of the atmosphere is extremely important, both scientifically and operationally, be...

2015
T. Luo R. Yuan Zhien Wang Z. Wang

Atmospheric boundary layer (ABL) processes are important in climate, weather and air quality. A better understanding of the structure and the behavior of the ABL is required for understanding and modeling of the chemistry and dynamics of the atmosphere on all scales. Based on the systematic variations of the ABL structures over different surfaces, different lidar-based methods were developed an...

2012
R. H. H. Janssen J. L. Jimenez D. K. Farmer

We study the combined effects of land surface conditions, atmospheric boundary layer dynamics and chemistry on the diurnal evolution of biogenic secondary organic aerosol in the atmospheric boundary layer, using a model that contains the essentials of all these components. First, we evaluate the model for a case study in Hyytiälä, Finland, and find that it is able to satisfactorily reproduce th...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه مواد و انرژی - پژوهشکده سرامیک 1392

thermal barrier coatings (tbcs) are used to provide thermal insulation to the hot section components of gas turbines in order to enhance the operating temperature and turbine efficiency. hot corrosion and thermal shocks are the main destructive factors in tbcs which comes as a result of oxygen and molten salt diffusion into the coating. in this thesis atmospheric plasma spraying was used to dep...

2011
Evgeni Fedorovich E. Fedorovich

This book has been awaited in the atmospheric boundary-layer research community for a long time. JohnWyngaard, the author of the book, is by all counts an outstanding figure in the area of atmospheric turbulence studies. His contributions to the field are both numerous and exceptional. As a person, John comprises all the principal qualities of an outstanding scientist and academic: curiosity, w...

2007
HARM JONKER DAVID PINO HARRY M. TEN BRINK NADINE CHAUMERLIAC IAN FALOONA

WHAT: Junior and senior researchers identified, discussed, and studied outstanding issues related to atmospheric boundary layer processes closely linked to atmospheric chemistry WHEN: 20–24 November 2006 WHERE: Castelldefels, Spain he importance of atmospheric boundary layer (ABL) dynamics and physics in controlling key aspects of atmospheric chemistry is becoming increasingly recognized. Proce...

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