Self-Similar Characteristic for the Ramp Structures of Wind Speed

Zong, Song

doi:10.1080/16742834.2014.11447183

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…В момент прохождения структур в данных ряда пульсационных составляющих обнаруживаются несимметричные треугольные всплески, называемые «рампами» (ramps) [5,6], что особенно отчетливо выражается на небольших высотах [7]. Самоподобные характеристики таких структур отражаются в устойчивых зависимостях для линейного наклона спектральной мощности и структурных функций [8,9].…”

Section: конвективные структуры вблизи нагретой поверхностиunclassified

Конвективные Структуры Вблизи Нагретой Поверхности

Малиновская,

Чхетиани,

Азизян

2023

MFS

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Section: конвективные структуры вблизи нагретой поверхностиunclassified

Конвективные Структуры Вблизи Нагретой Поверхности

Малиновская,

Чхетиани,

Азизян

2023

MFS

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“…The meteorological tower is in northcentral Beijing (39.967°N, 116.367°E) and was set up in 1978 by the Institute of Atmospheric Physics, Chinese Academy of Sciences. The underlying surface is a typical complex urban area consisting of trees, rivers, roads, and buildings of various heights (Song et al 2014). The dataset (10 Hz) used in this paper is from the 47-m level of the tower, from 0000 LST 1 July 2015 to 2400 LST 11 September 2015.…”

Section: Datamentioning

confidence: 99%

“…So, Shapland et al (2012a;2012b) investigated the structure function of twoscale ramp structures. Also, considering the multi-scale characteristic of ramp structures, Song et al (2014) found that a scaling law exists in wind speed signals, which indicates that ramp structures in wind speed signals are selfsimilar.…”

Section: Introductionmentioning

confidence: 97%

On the scaling law of ramp structures in scalar turbulence

Chen

2018

Atmospheric and Oceanic Science Letters

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Ramp structures widely exist in scalar turbulence, such as temperature, water vapor, and carbon dioxide (CO 2 ), which refer to the phenomenon that the physical quantity increases slowly with time and then suddenly drops. ramp structures lead to large gradients on a small scale and result in intermittency and anisotropy of turbulent flows. in this paper, wavelet analysis is used to analyze observed data from the beijing 325-m meteorological tower to extract ramp structures in temperature, water vapor, and CO 2 signals. ramp structures in CO 2 signals are different from those in temperature and water vapor in terms of the averaged temporal scale and normalized amplitude, and the ramp duration almost equals the cliff duration, which means ramp structures in CO 2 signals are not easy to generate and different physical mechanisms may exist. in addition, both the ascending and descending part of ramp structures are linearly fitted. it is found that a scaling law exists between the slope and duration in the ascending part in the three scalar signals. the corresponding power exponents are slightly different. furthermore, the same rule exists in the descending part of ramp structures, which indicates that self-similarity may be a universal law in scalar turbulence. moreover, the maxima of selected ramp structures show the same pattern, i.e. there are ramp structures in the maximum sequence, which proves that small-scale ramp structures are superimposed on large-scale ramp structures.

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Long-range correlation analysis among non-stationary passive scalar series in the turbulent boundary layer

Chen

et al. 2019

Physica A: Statistical Mechanics and its Applications

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Self-Similar Characteristic for the Ramp Structures of Wind Speed

Cited by 3 publications

References 4 publications

Конвективные Структуры Вблизи Нагретой Поверхности

Конвективные Структуры Вблизи Нагретой Поверхности

On the scaling law of ramp structures in scalar turbulence

Long-range correlation analysis among non-stationary passive scalar series in the turbulent boundary layer

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