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Turbulence parameters in the tropo-stratosphere are analyzed usinghigh-resolution balloon temperature measurements collected during the MUTSI(MU radar, Temperature sheets and Interferometry) campaign which took placenear the Middle and Upper atmosphere (MU) radar (Japan, 35° N, 136° E)in May 2000. Vertical profiles of the specific dissipation rate of turbulentkinetic energy, ε, and turbulent diffusivity, K, are estimated from the Thorpelengthscale, LT. The last is obtained by using two methods. The first oneconsists of measuring directly LT by reordering the potentialtemperature profiles. The second method is based on estimates of the temperaturestructure constant, CT2. A relationship between LT andCT2 can be found by assuming either adiabatic vertical displacementsor a model based on turbulent energy balance consideration. Analysis showsthat the adiabatic assumption gives indirect estimates of LT moreconsistent with direct measurements. We also found that vertical profiles ofanalyzed turbulence characteristics show substantial intermittency, leadingto substantial scatter of the local, median and average values. Generaltrends correspond to a decrease in ε and K from the boundary layer up to altitudes20–25 km. Layers of increased turbulence are systematically observed inthe tropo-stratosphere, which may be produced by instabilities oftemperature and wind profiles. These maxima may substantially increase localvalues of turbulence diffusivity. Keywords. Meteorology and atmospheric dynamics (Turbulence

Turbulence parameter estimations from high-resolution balloon temperature measurements of the MUTSI-2000 campaign