@Article{TeichriebADMRZSA:2013:ChReRo,
               author = "Teichrieb, Claudio A. and Acevedo, Ot{\'a}vio C. and Degrazia, 
                         Gervasio Annes and Moraes, Osvaldo Luiz Leal de and Roberti, 
                         D{\'e}bora R. and Zimermann, Hans R. and Santos, Daniel M. and 
                         Alves, Rita C. M.",
          affiliation = "Universidade Federal de Santa Maria, Santa Maria, RS, Brazil and 
                         Universidade Federal de Santa Maria, Santa Maria, RS, Brazil and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and Universidade Federal 
                         de Santa Maria, Santa Maria, RS, Brazil and Universidade Federal 
                         de Santa Maria, Santa Maria, RS, Brazil and Universidade Federal 
                         de Santa Maria, Santa Maria, RS, Brazil and Universidade Federal 
                         do Rio Grande do Sul, Porto Alegre, RS, Brazil",
                title = "Characterizing the relative role of low-frequency and turbulent 
                         processes in the nocturnal boundary layer through the analysis of 
                         two-point correlations of the wind components",
              journal = "Physica A: Statistical Mechanics and its Applications",
                 year = "2013",
               volume = "392",
               number = "6",
                pages = "1510--1521",
             keywords = "multiresolution decomposition, nocturnal boundary layer, two-point 
                         correlations.",
             abstract = "The study presents an analysis of two-point correlations between 
                         time series of nocturnal atmospheric wind, obtained from two 
                         micrometeorological towers, 45 m horizontally apart, each equipped 
                         with two sonic anemometers, 2.5 m vertically apart. It focuses on 
                         the scale dependence of the two-point correlations obtained from 
                         sensors vertically and horizontally separated. In particular, the 
                         role of low-frequency non-turbulent processes in the correlations 
                         is assessed, and compared to that of the turbulent scales of 
                         motion. The vertical correlations of the streamwise and vertical 
                         wind components show little dependence on the turbulence 
                         intensity, but those of the spanwise component decrease 
                         appreciably as it gets more turbulent. Multiresolution 
                         decomposition shows that the two-point correlations become 
                         increasingly dominated by low-frequency scales as it gets less 
                         turbulent, and that such large-scale processes are largely reduced 
                         in fully turbulent conditions. It is also shown that the vertical 
                         correlations of the spanwise wind component is negative for very 
                         small time scales. Horizontal two-point correlations obtained at 
                         the 45 m separation distance between the towers are almost 
                         entirely dominated by low-frequency motions, regardless of the 
                         turbulence intensity, but the magnitude of such correlations 
                         decreases with increasing turbulence intensity for any wind 
                         components. A comparison between the horizontal two-point 
                         correlations and autocorrelations taken with a time lag given by 
                         the ratio of the horizontal separation to the mean wind component 
                         in the direction that connects the two towers leads to the 
                         conclusion that the statistical properties of turbulence are often 
                         preserved over the horizontal distance, despite the lack of 
                         turbulence correlations for that separation.",
                  doi = "10.1016/j.physa.2012.11.009",
                  url = "http://dx.doi.org/10.1016/j.physa.2012.11.009",
                 issn = "0378-4371",
                label = "lattes: 0593135962205202 5 TeichriebADDMRZSA:2013:ChReRo",
             language = "en",
           targetfile = "Teichrieb_Characterizing.PDF",
        urlaccessdate = "01 maio 2024"
}