Comparison of atmospheric boundary layer soundings by a metric and a decimetric RASS

P. Trivero, W. Biamino, A. Marzorati, P. Marcacci, G. Bonino, R. Rossello

Risultato della ricerca: Contributo su rivistaArticolo in rivistapeer review

Abstract

The vertical thermal profile of the lower atmosphere can be remotely measured by the Radio Acoustic Sounding System (RASS). A RASS operating at the acoustic wavelength λa ∼ 1 m was designed and developed twenty years ago. It is suitable for monitoring the temperature profile of the lower troposphere and has been utilised for studies of the atmospheric boundary layer in different conditions and for the application of control strategies to air pollution emissions. The acoustic antenna is composed by 9 folded horns covering an area of 7×7 m2; the two radar antennas are composed by arrays of dipoles with square reflector of 2.8×2.8 m2 for each antenna. Therefore the metric RASS can be utilised only in a settled station. Recently we have designed and developed a decimetric RASS (λa = 0.34 m) with smaller antennas, which can be used as a mobile system. It can be housed and carried by a trailer. As it is known, increasing the sounding frequency gives a decreasing of the sounding range. Comparisons of results obtained by both the metric and the decimetric RASS in different atmospheric conditions are presented and discussed.

Lingua originaleInglese
pagine (da-a)201-204
Numero di pagine4
RivistaPhysics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere
Volume26
Numero di pubblicazione3
DOI
Stato di pubblicazionePubblicato - 2001
Pubblicato esternamente

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