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27 Results Found

  • Article
  • Open Access
6 Citations
4,844 Views
17 Pages

Performance Evaluation of LIDAR and SODAR Wind Profilers on the Brazilian Equatorial Margin

  • Audalio R. Torres Junior,
  • Natália P. Saraiva,
  • Arcilan T. Assireu,
  • Francisco L. A. Neto,
  • Felipe M. Pimenta,
  • Ramon M. de Freitas,
  • Osvaldo R. Saavedra,
  • Clóvis B. M. Oliveira,
  • Denivaldo C. P. Lopes and
  • Denisson Q. Oliveira
  • + 2 authors

7 November 2022

This article seeks to compare the performance of a LIDAR Windcube V2, manufactured by Leosphere, with that of a SODAR MFAS, manufactured by Scintec, in evaluating wind speed at different altitudes. The data from these two sensors were collected at th...

(This article belongs to the Section Sustainable Engineering and Science)
  • Article
  • Open Access
12 Citations
5,118 Views
16 Pages

Sodar Observation of the ABL Structure and Waves over the Black Sea Offshore Site

  • Vasily Lyulyukin,
  • Margarita Kallistratova,
  • Daria Zaitseva,
  • Dmitry Kuznetsov,
  • Arseniy Artamonov,
  • Irina Repina,
  • Igor Petenko,
  • Rostislav Kouznetsov and
  • Artem Pashkin

14 December 2019

Sodar investigations of the breeze circulation and vertical structure of the atmospheric boundary layer (ABL) were carried out in the coastal zone of the Black Sea for ten days in June 2015. The measurements were preformed at a stationary oceanograph...

(This article belongs to the Special Issue Vertical Structure of the Atmospheric Boundary Layer in Coastal Zone)
  • Article
  • Open Access
9 Citations
5,830 Views
15 Pages

Investigation of the Mixing Height in the Planetary Boundary Layer by Using Sodar and Microwave Radiometer Data

  • Sergey Odintsov,
  • Eugene Miller,
  • Andrey Kamardin,
  • Irina Nevzorova,
  • Arkady Troitsky and
  • Mathias Schröder

The height of the mixing layer is a significant parameter for describing the dynamics of the planetary boundary layer (PBL), especially for air quality control and for the parametrizations in numerical modeling. The problem is that the heights of the...

  • Article
  • Open Access
10 Citations
3,239 Views
19 Pages

7 April 2021

In 2014/2015 a one-year field campaign at the Tiksi observatory in the Laptev Sea area was carried out using Sound Detection and Ranging/Radio Acoustic Sounding System (SODAR/RASS) measurements to investigate the atmospheric boundary layer (ABL) with...

(This article belongs to the Section Atmospheric Remote Sensing)
  • Article
  • Open Access
8 Citations
3,419 Views
24 Pages

12 June 2022

Measurements of the atmospheric boundary layer (ABL) structure were performed for three years (October 2017–August 2020) at the Russian observatory “Ice Base Cape Baranova” (79.280° N, 101.620° E) using SODAR (Sound Detectio...

(This article belongs to the Topic The Arctic Atmosphere: Climate and Weather)
  • Article
  • Open Access
6 Citations
4,276 Views
25 Pages

Doppler Sodar Measured Winds and Sea Breeze Intrusions over Gadanki (13.5° N, 79.2° E), India

  • Potula Sree Brahmanandam,
  • G. Uma,
  • K. Tarakeswara Rao,
  • S. Sreedevi,
  • N. S. M. P. Latha Devi,
  • Yen-Hsyang Chu,
  • Jayshree Das,
  • K. Mahesh Babu,
  • A. Narendra Babu and
  • K. Srinivas
  • + 2 authors

9 August 2023

Doppler sodar measurements were made at the tropical Indian station, i.e., Gadanki (13.5° N, 79. 2° E). According to wind climatologies, the wind pattern changes from month to month. In July and August, the predominant wind direction during t...

  • Article
  • Open Access
12 Citations
4,961 Views
35 Pages

Turbulence, Low-Level Jets, and Waves in the Tyrrhenian Coastal Zone as Shown by Sodar

  • Igor Petenko,
  • Giampietro Casasanta,
  • Simone Bucci,
  • Margarita Kallistratova,
  • Roberto Sozzi and
  • Stefania Argentini

27 December 2019

The characteristics of the vertical and temporal structure of the coastal atmospheric boundary layer are variable for different sites and are often not well known. Continuous monitoring of the atmospheric boundary layer was carried out close to the T...

(This article belongs to the Special Issue Vertical Structure of the Atmospheric Boundary Layer in Coastal Zone)
  • Article
  • Open Access
113 Citations
26,484 Views
31 Pages

25 August 2011

Detailed knowledge of the wind resource is necessary in the developmental and operational stages of a wind farm site. As wind turbines continue to grow in size, masts for mounting cup anemometers—the accepted standard for resource assessment—have nec...

  • Article
  • Open Access
14 Citations
3,796 Views
22 Pages

EOSOLAR Project: Assessment of Wind Resources of a Coastal Equatorial Region of Brazil—Overview and Preliminary Results

  • Arcilan T. Assireu,
  • Felipe M. Pimenta,
  • Ramon M. de Freitas,
  • Osvaldo R. Saavedra,
  • Francisco L. A. Neto,
  • Audálio R. Torres Júnior,
  • Clóvis B. M. Oliveira,
  • Denivaldo C. P. Lopes,
  • Shigeaki L. de Lima and
  • Denisson Q. Oliveira
  • + 3 authors

23 March 2022

The EOSOLAR project was designed to investigate the structure of the atmospheric boundary layer in an equatorial coastal zone, where the discontinuity of surface conditions induces non-stationarity gradients of wind speeds and the development of inte...

(This article belongs to the Section A3: Wind, Wave and Tidal Energy)
  • Article
  • Open Access
17 Citations
4,604 Views
13 Pages

14 November 2019

The structural characteristic of the refractive index of optical waves was calculated from experimental data on the microstructure of the temperature turbulence in the atmospheric boundary layer. The experimental data were obtained with an acoustic m...

(This article belongs to the Special Issue Atmospheric Turbulence Measurements and Calibration)
  • Article
  • Open Access
3 Citations
3,383 Views
16 Pages

31 August 2021

More than seven years of remote sensing data with high spatial and temporal resolution were investigated in this study. The 20-min moving averaged wind profiles form the acoustic sounding with Scintec MFAS sodar were derived every 10 min. The profile...

(This article belongs to the Section Meteorology)
  • Article
  • Open Access
3 Citations
1,857 Views
15 Pages

Low-level jets (LLJs) are important features in the Arctic atmospheric boundary layer (ABL). In the present paper, a LLJ event during winter 2014/15 is investigated, which was observed at the Tiksi observatory (71.586° N, 128.918° E, 7 m asl)...

  • Article
  • Open Access
3 Citations
3,339 Views
17 Pages

Observations of the Boundary Layer in the Cape Grim Coastal Region: Interaction with Wind and the Influences of Continental Sources

  • Zhenyi Chen,
  • Robyn Schofield,
  • Melita Keywood,
  • Sam Cleland,
  • Alastair G. Williams,
  • Stephen Wilson,
  • Alan Griffiths and
  • Yan Xiang

12 January 2023

A comparative study and evaluation of boundary layer height (BLH) estimation was conducted during an experimental campaign conducted at the Cape Grim Air Pollution station, Australia, from 1 June to 13 July 2019. The temporal and spatial distribution...

(This article belongs to the Section Atmospheric Remote Sensing)
  • Article
  • Open Access
59 Citations
7,465 Views
29 Pages

Wind Profiling in the Lower Atmosphere from Wind-Induced Perturbations to Multirotor UAS

  • Javier González-Rocha,
  • Stephan F. J. De Wekker,
  • Shane D. Ross and
  • Craig A. Woolsey

29 February 2020

We present a model-based approach to estimate the vertical profile of horizontal wind velocity components using motion perturbations of a multirotor unmanned aircraft system (UAS) in both hovering and steady ascending flight. The state estimation fra...

(This article belongs to the Section Remote Sensors)
  • Article
  • Open Access
12 Citations
4,154 Views
42 Pages

Characterization of Wind Resources of the East Coast of Maranhão, Brazil

  • Felipe M. Pimenta,
  • Osvaldo R. Saavedra,
  • Denisson Q. Oliveira,
  • Arcilan T. Assireu,
  • Audálio R. Torres Júnior,
  • Ramon M. de Freitas,
  • Francisco L. Albuquerque Neto,
  • Denivaldo C. P. Lopes,
  • Clóvis B. M. Oliveira and
  • Rafael B. S. Veras
  • + 2 authors

22 July 2023

The objective of this work is to assess the wind resources of the east coast of Maranhão, Brazil. Wind profilers were combined with micrometeorological towers and atmospheric reanalysis to investigate micro- and mesoscale aspects of wind varia...

(This article belongs to the Section A3: Wind, Wave and Tidal Energy)
  • Article
  • Open Access
26 Citations
5,391 Views
15 Pages

6 March 2023

The urban heat island (UHI) intensity in Moscow and the influence of various meteorological parameters are discussed using weather station data. The maximal and average in-space UHI intensities, i.e., a comparison of air temperature T either in the c...

(This article belongs to the Section Meteorology)
  • Article
  • Open Access
47 Citations
8,121 Views
32 Pages

The Multi-Purpose Airborne Sensor Carrier MASC-3 for Wind and Turbulence Measurements in the Atmospheric Boundary Layer

  • Alexander Rautenberg,
  • Martin Schön,
  • Kjell zum Berge,
  • Moritz Mauz,
  • Patrick Manz,
  • Andreas Platis,
  • Bram van Kesteren,
  • Irene Suomi,
  • Stephan T. Kral and
  • Jens Bange

17 May 2019

For atmospheric boundary-layer (ABL) studies, unmanned aircraft systems (UAS) can provide new information in addition to traditional in-situ measurements, or by ground- or satellite-based remote sensing techniques. The ability of fixed-wing UAS to tr...

(This article belongs to the Special Issue Application of Unmanned Aircraft Systems for Atmospheric Science)
  • Article
  • Open Access
3 Citations
2,691 Views
12 Pages

31 July 2019

Statistical analysis of the results of minisodar measurements of vertical profiles of wind velocity components in a 5–200 m layer of the atmosphere shows that this problem belongs to the class of robust nonparametric problems of mathematical st...

(This article belongs to the Special Issue Information Technologies and Electronics)
  • Article
  • Open Access
4 Citations
4,864 Views
20 Pages

28 July 2021

The parametrizations of meteorological variables provided by the Monin–Obukhov similarity theory (MOST) is of major importance for pollutant dispersion assessment. However, the complex flow pattern that characterizes the urban areas limits the applic...

(This article belongs to the Special Issue Integrated Evaluation of Indoor Particulate Matter (VIEPI) Project: Study Design, Results and Open Questions)
  • Article
  • Open Access
9 Citations
5,110 Views
19 Pages

Pannonian Basin Nocturnal Boundary Layer and Fog Formation: Role of Topography

  • Joan Cuxart,
  • Maja Telisman Prtenjak and
  • Blazenka Matjacic

Under high-pressure systems, the nocturnal atmospheric boundary layer in the Pannonian Basin is influenced by gravity flows generated at the mountain ranges and along the valleys, determining the variability of wind and temperature at a local scale a...

(This article belongs to the Special Issue Climate Extremes in the Pannonian Basin: Current Approaches and Challenges)
  • Article
  • Open Access
12 Citations
7,888 Views
13 Pages

Implementation of a Virtual Microphone Array to Obtain High Resolution Acoustic Images

  • Alberto Izquierdo,
  • Juan J. Villacorta,
  • Lara Del Val,
  • Luis Suárez and
  • David Suárez

23 December 2017

Using arrays with digital MEMS (Micro-Electro-Mechanical System) microphones and FPGA-based (Field Programmable Gate Array) acquisition/processing systems allows building systems with hundreds of sensors at a reduced cost. The problem arises when sys...

(This article belongs to the Special Issue Integrated MEMS Sensors for the IoT Era)
  • Article
  • Open Access
12 Citations
5,479 Views
18 Pages

Estimating the Wind-Generated Wave Erosivity Potential: The Case of the Itumbiara Dam Reservoir

  • Ricardo Moreira Vilhena,
  • Márcia Maria dos Anjos Mascarenha,
  • Maurício Martines Sales,
  • Patrícia de Araújo Romão and
  • Marta Pereira da Luz

18 February 2019

The impact of wind waves is a process that affect reservoir shorelines, causing economic and environmental damage. The objective of this paper is to analyze the erosive potential of waves generated by winds at the shoreline of a large tropical reserv...

(This article belongs to the Section Water Resources Management, Policy and Governance)
  • Article
  • Open Access
16 Citations
3,952 Views
20 Pages

Assessing Economic Complementarity in Wind–Solar Hybrid Power Plants Connected to the Brazilian Grid

  • Rafael B. S. Veras,
  • Clóvis B. M. Oliveira,
  • Shigeaki L. de Lima,
  • Osvaldo R. Saavedra,
  • Denisson Q. Oliveira,
  • Felipe M. Pimenta,
  • Denivaldo C. P. Lopes,
  • Audálio R. Torres Junior,
  • Francisco L. A. Neto and
  • Arcilan T. Assireu
  • + 1 author

31 May 2023

The share of electricity generation from Variable Renewable Energy Sources (VRES) has increased over the last 20 years. Despite promoting the decarbonization of the energy mix, these sources bring negative characteristics to the energy mix, such as p...

(This article belongs to the Topic Advances in Renewable Energy Technologies and Systems Solutions)
  • Article
  • Open Access
54 Citations
17,404 Views
29 Pages

Innovative Strategies for Observations in the Arctic Atmospheric Boundary Layer (ISOBAR)—The Hailuoto 2017 Campaign

  • Stephan T. Kral,
  • Joachim Reuder,
  • Timo Vihma,
  • Irene Suomi,
  • Ewan O’Connor,
  • Rostislav Kouznetsov,
  • Burkhard Wrenger,
  • Alexander Rautenberg,
  • Gabin Urbancic and
  • Markus Schygulla
  • + 15 authors

16 July 2018

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...

(This article belongs to the Special Issue Atmospheric Measurements with Unmanned Aerial Systems (UAS))
  • Article
  • Open Access
14 Citations
3,725 Views
22 Pages

Urban-Scale Computational Fluid Dynamics Simulations with Boundary Conditions from Similarity Theory and a Mesoscale Model

  • Demetri Bouris,
  • Athanasios G. Triantafyllou,
  • Athina Krestou,
  • Elena Leivaditou,
  • John Skordas,
  • Efstathios Konstantinidis,
  • Anastasios Kopanidis and
  • Qing Wang

7 September 2021

Mesoscale numerical weather prediction models usually provide information regarding environmental parameters near urban areas at a spatial resolution of the order of thousands or hundreds of meters, at best. If detailed information is required at the...

(This article belongs to the Section G: Energy and Buildings)
  • Article
  • Open Access
35 Citations
4,971 Views
19 Pages

Intercomparison of Planetary Boundary Layer Heights Using Remote Sensing Retrievals and ERA5 Reanalysis over Central Amazonia

  • Cléo Quaresma Dias-Júnior,
  • Rayonil Gomes Carneiro,
  • Gilberto Fisch,
  • Flávio Augusto F. D’Oliveira,
  • Matthias Sörgel,
  • Santiago Botía,
  • Luiz Augusto T. Machado,
  • Stefan Wolff,
  • Rosa Maria N. dos Santos and
  • Christopher Pöhlker

13 September 2022

The atmospheric boundary layer height (zi) is a key parameter in the vertical transport of mass, energy, moisture, and chemical species between the surface and the free atmosphere. There is a lack of long-term and continuous observations of zi, howev...

(This article belongs to the Special Issue Characterizing Atmospheric and Marine Boundary Layer Processes by Remote Sensing)
  • Review
  • Open Access
59 Citations
17,543 Views
55 Pages

3 June 2010

Given the significant rise of the utilization of wind energy the accurate assessment of the wind potential is becoming increasingly important. Direct applications of wind assessment techniques include the creation of wind maps on a local scale (typic...

(This article belongs to the Special Issue Wind Energy)