TY - JOUR
T1 - Automatic tuning of Bragg condition in a Radio-Acoustic System for PBL temperature profile measurement
AU - Bonino, G.
AU - Trivero, P.
PY - 1985
Y1 - 1985
N2 - A Radio-Acoustic Sounding System (RASS) with acoustic wavelength λa ~ 1 m was designed and successfully tested. The system proved to be capable of measuring the vertical temperature profile in the Planetary Boundary Layer (PBL) with an accuracy and vertical resolution comparable to that of traditional apparatus (radiothermosondes borne by tethered or disposable balloons, thermosondes borne by aircraft and so on), yet combined with the advantages typical of remote sensing techniques. Up to the summer of 1983 the system needed attendance by an operator who had to identify the acoustic sounding frequency affording the fundamental condition of Bragg resonance between acoustic and radio wavelengths. Features and performance of the new completely automatic RASS arrangement are presented. These include the possibility of obtaining average thermal vertical profiles at preset time intervals. Maximum range of measurements obtained in about 1000 1 2-h averages was: in 90% of cases ≥ 600m; in 50% of cases ≥ 1100m. Such results indicate the usefulness of automatic RASS as a tool for meteorological purposes and for the application of air pollution control strategies.
AB - A Radio-Acoustic Sounding System (RASS) with acoustic wavelength λa ~ 1 m was designed and successfully tested. The system proved to be capable of measuring the vertical temperature profile in the Planetary Boundary Layer (PBL) with an accuracy and vertical resolution comparable to that of traditional apparatus (radiothermosondes borne by tethered or disposable balloons, thermosondes borne by aircraft and so on), yet combined with the advantages typical of remote sensing techniques. Up to the summer of 1983 the system needed attendance by an operator who had to identify the acoustic sounding frequency affording the fundamental condition of Bragg resonance between acoustic and radio wavelengths. Features and performance of the new completely automatic RASS arrangement are presented. These include the possibility of obtaining average thermal vertical profiles at preset time intervals. Maximum range of measurements obtained in about 1000 1 2-h averages was: in 90% of cases ≥ 600m; in 50% of cases ≥ 1100m. Such results indicate the usefulness of automatic RASS as a tool for meteorological purposes and for the application of air pollution control strategies.
KW - Instrumentation and techniques for geophysical research
KW - air quality and air pollution
KW - boundary layer structure
KW - meteorological applications
UR - http://www.scopus.com/inward/record.url?scp=0021890292&partnerID=8YFLogxK
U2 - 10.1016/0004-6981(85)90242-2
DO - 10.1016/0004-6981(85)90242-2
M3 - Article
SN - 0004-6981
VL - 19
SP - 973
EP - 978
JO - Atmospheric Environment
JF - Atmospheric Environment
IS - 6
ER -