Measurement of inner and outer scale of atmospheric optical turbulence in different areas

Two automatic data-collecting systems were set up respectively in inland and along the coast for measuring the atmospheric turbulence. By long-time observation a great amount of data were obtained. The daily variations and probability of the inner and outer scale of turbulence were analyzed. The mean values of the turbulence inner scale are all more than 10 mm and those of outer-scale are about 2 m in inland and along the coast. The daily variations of the inner scale are complex relatively and those of the outer scale are similar to turbulence intensity in inland. There was no explicit relationship between turbulence scale and turbulence intensity along the coast. The scales and probability distributions of the atmospheric turbulence always vary with the time and space. It is necessary to