Convective plumes in the atmospheric boundary layer as observed with an acoustic Doppler sodar

Odile Taconet; Alain Weill

doi:10.1007/bf00123971

Convective plumes in the atmospheric boundary layer as observed with an acoustic Doppler sodar

Boundary-Layer Meteorology ◽

10.1007/bf00123971 ◽

1983 ◽

Vol 25 (2) ◽

pp. 143-158 ◽

Cited By ~ 14

Author(s):

Odile Taconet ◽

Alain Weill

Keyword(s):

Boundary Layer ◽

Atmospheric Boundary Layer ◽

Doppler Sodar

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Doppler Sodar Observations of the Diurnal Variations of the Atmospheric Boundary Layer over Gadanki, a Tropical Rural Station

International Journal of Trend in Scientific Research and Development ◽

10.31142/ijtsrd5974 ◽

2017 ◽

Vol Volume-2 (Issue-1) ◽

pp. 517-522

Author(s):

D. Sharmila ◽

Prof. M. P. Rao ◽

Keyword(s):

Boundary Layer ◽

Atmospheric Boundary Layer ◽

Diurnal Variations ◽

Rural Station ◽

Doppler Sodar

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A study of the spatial structure of the atmospheric boundary layer with a Doppler-Sodar network

Izvestiya Atmospheric and Oceanic Physics ◽

10.1134/s0001433809050016 ◽

2009 ◽

Vol 45 (5) ◽

pp. 541-548 ◽

Cited By ~ 6

Author(s):

I. G. Granberg ◽

V. F. Kramar ◽

R. D. Kuznetsov ◽

O. G. Chkhetiani ◽

M. A. Kallistratova ◽

...

Keyword(s):

Boundary Layer ◽

Spatial Structure ◽

Atmospheric Boundary Layer ◽

Doppler Sodar

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

Atmosphere ◽

10.3390/atmos11010028 ◽

2019 ◽

Vol 11 (1) ◽

pp. 28 ◽

Cited By ~ 1

Author(s):

Igor Petenko ◽

Giampietro Casasanta ◽

Simone Bucci ◽

Margarita Kallistratova ◽

Roberto Sozzi ◽

...

Keyword(s):

Boundary Layer ◽

Wind Speed ◽

Atmospheric Boundary Layer ◽

Vertical Wind ◽

Land Breeze ◽

Tyrrhenian Sea ◽

Turbulent Layer ◽

Low Level ◽

Doppler Sodar ◽

Low Level Jets

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 Tyrrhenian Sea, near Tarquinia (Italy), in 2015–2017. A ground-based remote sensing instrument (triaxial Doppler sodar) and in situ sensors (meteorological station, ultrasonic anemometer/thermometer, and net radiometer) were used to measure vertical wind velocity profiles, the thermal structure of the atmosphere, the height of the turbulent layer, turbulent heat and momentum fluxes in the surface layer, atmospheric radiation, and precipitation. Diurnal alternation of the atmospheric stability types governed by the solar cycle coupled with local sea/land breeze circulation processes is found to be variable and is classified into several main regimes. Low-level jets (LLJ) at heights of 100–300 m above the surface with maximum wind speed in the range of 5–18 m s−1 occur in land breezes, both during the night and early in the morning. Empirical relationships between the LLJ core wind speed characteristics and those near the surface are obtained. Two separated turbulent sub-layers, both below and above the LLJ core, are often observed, with the upper layer extending up to 400–600 m. Kelvin–Helmholtz billows associated with internal gravity–shear waves occurring in these layers present opposite slopes, in correspondence with the sign of vertical wind speed gradients. Our observational results provide a basis for the further development of theoretical and modelling approaches, taking into account the wave processes occurring in the atmospheric boundary layer at the land–sea interface.

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