Joint field experiment 1981 at Tsimlyansk, U.S.S.R.
- Book ID
- 104628885
- Publisher
- Springer
- Year
- 1982
- Tongue
- English
- Weight
- 137 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0006-8314
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β¦ Synopsis
A comparison of instruments for measurement of the characteristics of atmospheric turbulence was successfully carried out at the Tsimlyansk field station (the Rostov region) of the Institute of Atmospheric Physics (IFA) of the U.S.S.R. Academy of Sciences from June 15 to July 31, 1981. Besides IFA, scientists from the Main Meteorological Observatory (MMO) in Potsdam (G.D.R.), the Agrometeorological Research Institute (ARI) in Halle (G.D.R.), the Institute of Engineering Problems (IEP) of the Warsaw Polytechnical Institute (Poland), the Institute of Atmospheric Physics of the Czechoslovak Academy of Sciences (IFACz) in Prague (Czechoslovakia), and the Hydrometeorological Institute (HMI) (Czechoslovakia) took part in the experiment. The Institute of Hydrology and Meteorology of the Bulgarian Academy of Sciences and Sofia University (Bulgaria) participated in the experiment as observers.
The main purposes of the experiment are the following:
(1) Comparison of different instruments used for measurement of the second moments and spectraofturbulentfluctuations and for thetreatment ofdata. To do this, simultaneous measurements of temperature and wind velocity fluctuations were performed by different instruments brought by the participants of the expedition. Various methods and devices for treatment of the data were also compared.
(2) Comparison of in-situ and acoustic methods of determination of the vertical profiles of some turbulence characteristics and of the mean wind velocity in the layer from 30 to 500 m. The data were obtained simultaneously by instruments placed on the meteorological mast, on board a plane and with three types of sodars.
(3) Investigation of the space structure of turbulence with two acoustic anemometers and one sodar.
(4) Estimation of the accuracy of some known models of the atmospheric surface layer by comparing the results of direct measurements of vertical turbulent fluxes with the values of the fluxes derived from the measurements of vertical profiles of wind velocity and temperature.
The following equipment was brought by the participants:
(1) Two types of acoustic anemometers (MM0 and IFA), a three-component propeller anemometer (IFACz) and a thermoanemometer (IEP) -to measure the fluctuations and mean values of wind velocity components.
(2) Two types of resistance thermometers (MM0 and IFA) and an acoustic thermometer (MMO) -to measure air temperature fluctuations.
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