Mini-acoustic sounding?A powerful tool for ABL applications: Recent advances and applications of acoustic mini-sodars

Asimakopoulos, D. N.; Helmis, C. G.; Petrakis, M.

doi:10.1007/bf00119399

Cited by 6 publications

(1 citation statement)

References 21 publications

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“…Increase in the sea breeze strength during this period is associated with increased temperature gradients between land and sea. Unlike noted in the other studies (Helmis et al 1995a;Asimakopoulos et al 1996) turbulence intensity increased after the passage of the front around 1300 IST as seen in figure 5(b). This increase is attributed to the production of turbulence by buoyant thermals.…”

Section: After the Passage Of Sea Breeze Frontcontrasting

confidence: 44%

Thermal internal boundary layer characteristics at a tropical coastal site as observed by a mini-SODAR under varying synoptic conditions

et al. 2002

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Atmospheric boundary layer observations are conducted at a coastal site during a transition phase from winter to summer season over the Indian peninsula. Thermal Internal Boundary Layer (TIBL) characteristics in presence of an offshore and a weakly influenced onshore synoptic wind are examined with the help of measurements carried out with a mini-SODAR (SOund Detection And Ranging), tethered balloon, and tower-based micrometeorological measurements. Influence of the changing synoptic scale conditions on turbulent characteristics of TIBL is discussed. Mini-SODAR data showed the development and decay of sea and land breeze. It is seen that the characteristics of TIBL over the coastal land after sea breeze onset are similar to that of a shallow convective boundary layer (CBL) commonly found over plain land. Inside the TIBL, a maximum wind speed was noted close to the surface due to the penetration of sea breeze. In the offshore case, a distinct sea breeze circulation was observed unlike in the case of onshore flow. In the presence of weak onshore case, a 'minor sea' breeze is noted before the establishment of sea breeze and a reduction in the momentum fluxes gives rise to decrease in the turbulence intensity. Updraft in the sea breeze front was stronger during weak synoptic conditions. Influence of synoptic changes on the sea breeze-land breeze circulation such as onset, strength and duration of the sea-land breeze are also examined.

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Section: After the Passage Of Sea Breeze Frontcontrasting

confidence: 44%