Typical scientific results with the MU radar
Height variation of characteristics of atmospheric gravity waves

Observations with the MU radar, sounding rockets, and radiosondes quantitatively clarified characteristics of atmospheric gravity waves and their effects on the Earth's general circulation and temperature structure.

Characteristics of mesospheric turbulence layers

Atmospheric waves propagating upwards become unstable and generate turbulence, which has been studied in detail from radiowave scattering of the resulting turbulence.

IS (Incoherent scatter) observations of the ionosphere

Variability of the upper atmosphere (ionosphere) has been observed with the MU radar, the only IS radar in the Asian sector.

Discovery of mid-latitude ionospheric irregularities

Strong echoes perpendicular to the geomagnetic field were observed, and in conjunction with sounding rockets and optical instruments the mechanism of midlatitude ionospheric irregularities has been clarified.

Boundary-layer radar (BLR) observations

Several types of BLRs were developed based on experience with the MU radar, and differences in the boundary layer between midlatitude and equatorial regions elucidated.

Measurement of eye and cross-section of typhoons

The MU radar can measure the 3-D wind, and is a powerful tool for studies of weather phenomena. Typhoon 9426 passed over the Shigaraki MU Observatory, and detailed structures of the typhoon cross-section were clarified.

RASS observations of meteorological disturbances

RASS was developed for remote sensing of atmospheric temperature, and uses sound wave to backscatter for the MU radar. Complicated meteorological disturbances i.e. front systems, can be studied with higher temporal resolutions. Temperature profile with higher vertical velocity was analyzed by using the MU radar imaging observation system.

Horizontal distribution of horizontal wind velocity with meteor-trail observations

The MU radar can measure backscatters from meteor trails even in daytime and under all weather conditions. The horizontal structure of wind velocities field was successfully analyzed by using multi-cannel facility of the MU radar.

Remote-sensing of water vapor amount with the MU radar

By analyzing echo power intensity, water vapor amount can be estimated in the lower atmosphere, regardless meteorological conditions. Humidity profiles with the MU radar will be helpful to analyze severe meteorological disturbances.

Detailed turbulence structure observed  with the MU radar imaging observation

Detailed atmospheric structure with the excellent temporal and vertical resolutions was monitored with the MU radar imaging observation system. The detailed variation of turbulence and layered structure was successfully elucidated with the imaging results.

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