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M. DOURADO,A. PEREIRA DE OLIVERA
An one-dimensional atmospheric second order closure model, coupled to an oceanic mixed layer model, is used to investigate the short term variation of the atmospheric and oceanic boundary layers in the coastal upwelling area of Cabo Frio, Brazil (23º ...
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Xia Sun, Heather A. Holmes, Olabosipo O. Osibanjo, Yun Sun and Cesunica E. Ivey
The partitioning of available energy into surface sensible and latent heat fluxes impacts the accuracy of simulated near surface temperature and humidity in numerical weather prediction models. This case study evaluates the performance of the Weather Res...
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Guoqiang Li, Qing Wang, Qijun Zhao, Guoqing Zhao, Fei Feng and Linxin Wu
The environment for the shipboard landing and takeoff of helicopters is extremely complex and significantly affects their safe flight. To address the intricate characteristics of the flow field during these operations, a simulation method suitable for ro...
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Lars Witte, Gabriele Arnold, Jan Bertram, Matthias Grott, Caroline Krämer, Andreas Lorek and Torben Wippermann
The Mars Exploration Program Analysis Group has identified measurements of the state and the variability of the Martian atmosphere as high priority investigations for the upcoming years. Balloon-borne instruments could bridge the gap in both temporal and...
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Bin Sun, Lei Cheng, Chong-Yang Du, Jing-Ke Zhang, Yong-Quan He and Guang-Ming Cao
The atmospheric corrosion behavior of a hot-rolled strip with four types (I?IV) of oxide scale was investigated using the accelerated wet?dry cycle corrosion test. Corrosion resistance and porosity of oxide scale were studied by potentiometric polarizati...
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RK Kamble
Pág. 302 - 310
Mixing height observations were recorded in Nagothane village of Raigad district of Western India by using minisonde technique in winter season (December 2003-February 2004) at an interval of 3 hours so as to have a clear idea of diurnal variation of mix...
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Victor A. Kulikov, Svetlana L. Lachinova, Mikhail A. Vorontsov and Venkata S. Rao Gudimetla
A concept of atmospheric turbulence characterization using laser light backscattered off a moving unresolved target or a moving target with a glint is considered and analyzed through wave-optics numerical simulations. The technique is based on analysis o...
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Sambhawika Srivastava,Manish Kumar,Ram S. Singh,Birendra N. Rai,Rajesh K. Mall,Tirthankar Banerjee
Pág. 95 - 113
The first ever long-term measurement of black carbon (BC) aerosols over an urban location at the central Indo-Gangetic Plain (IGP) is presented. Both short- and long-term variations in BC during the period 2009-2013 are discussed with specific emphasis o...
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Manuela Lehner and Mathias W. Rotach
Coupling of the earth’s surface with the atmosphere is achieved through an exchange of momentum, energy, and mass in the atmospheric boundary layer. In mountainous terrain, this exchange results from a combination of multiple transport processes, w...
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Stephan T. Kral, Joachim Reuder, Timo Vihma, Irene Suomi, Ewan O?Connor, Rostislav Kouznetsov, Burkhard Wrenger, Alexander Rautenberg, Gabin Urbancic, Marius O. Jonassen, Line Båserud, Björn Maronga, Stephanie Mayer, Torge Lorenz, Albert A. M. Holtslag, Gert-Jan Steeneveld, Andrew Seidl, Martin Müller, Christian Lindenberg, Carsten Langohr, Hendrik Voss, Jens Bange, Marie Hundhausen, Philipp Hilsheimer and Markus Schygulla
The aim of the research project “Innovative Strategies for Observations in the Arctic Atmospheric Boundary Layer (ISOBAR)” is to substantially increase the understanding of the stable atmospheric boundary layer (SBL) through a combination of ...
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Zixuan Yang, Antoni Calderer, Sida He, Fotis Sotiropoulos, James D. Doyle, David D. Flagg, Jamie MacMahan, Qing Wang, Brian K. Haus, Hans C. Graber and Lian Shen
We have performed large-eddy simulations (LES) to study the effect of complex land topography on the atmospheric boundary layer (ABL) in coastal areas. The areas under investigation are located at three beaches in Monterey Bay, CA, USA. The sharp-interfa...
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Yassin Mbululo, Jun Qin, Jun Hong and Zhengxuan Yuan
In this study, we investigated six air pollutants from 21 monitoring stations scattered throughout Wuhan city by analyzing meteorological variables in the atmospheric boundary layer (ABL) and air mass backward trajectories from HYSPLIT during the polluti...
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Konrad Bärfuss, Falk Pätzold, Barbara Altstädter, Endres Kathe, Stefan Nowak, Lutz Bretschneider, Ulf Bestmann and Astrid Lampert
The unmanned research aircraft ALADINA (Application of Light-weight Aircraft for Detecting in situ Aerosols) has been established as an important tool for boundary layer research. For simplified integration of additional sensor payload, a flexible and re...
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Stefano Serafin, Bianca Adler, Joan Cuxart, Stephan F. J. De Wekker, Alexander Gohm, Branko Grisogono, Norbert Kalthoff, Daniel J. Kirshbaum, Mathias W. Rotach, Jürg Schmidli, Ivana Stiperski, ?eljko Vecenaj and Dino Zardi
The exchange of heat, momentum, and mass in the atmosphere over mountainous terrain is controlled by synoptic-scale dynamics, thermally driven mesoscale circulations, and turbulence. This article reviews the key challenges relevant to the understanding o...
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Brandon M. Witte, Robert F. Singler and Sean C. C. Bailey
This paper describes the components and usage of an unmanned aerial vehicle developed for measuring turbulence in the atmospheric boundary layer. A method of computing the time-dependent wind speed from a moving velocity sensor data is provided. The phys...
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Benjamin L. Hemingway, Amy E. Frazier, Brian R. Elbing and Jamey D. Jacob
The lowest portion of the Earth?s atmosphere, known as the atmospheric boundary layer (ABL), plays an important role in the formation of weather events. Simple meteorological measurements collected from within the ABL, such as temperature, pressure, humi...
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Behnam Moghadassian, Aaron Rosenberg and Anupam Sharma
The objective of this paper is to numerically investigate the effects of the atmospheric boundary layer on the aerodynamic performance and loads of a novel dual-rotor wind turbine (DRWT). Large eddy simulations are carried out with the turbines operating...
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John Z. G. Ma
We study the atmospheric structure in response to the propagation of gravity waves under nonisothermal (nonzero vertical temperature gradient), wind-shear (nonzero vertical zonal/meridional wind speed gradients), and dissipative (nonzero molecular viscos...
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Ali M. AbdelSalam, Ramalingam Velraj
Simulations of wind turbine wakes are presented in this paper using the three-dimensional Reynolds-Averaged Navier-Stokes (RANS) equations employing the k-e turbulence model appropriately modified for the atmospheric flows. The actuator disk approach is ...
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Mahdi Abkar and Fernando Porté-Agel
Large-eddy simulation is used to study the influence of free-atmosphere stratification on the structure of atmospheric boundary-layer flow inside and above very large wind farms, as well as the power extracted by the wind turbines. In the simulations, tu...
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