Observation of an atmospheric boundary layer at Mizuho Station using an acoustic sounder

• Main Authors: Kobayashi, Shun'ichi, Ishikawa, Nobuyoshi, Ohata, Tetsuo, Kawaguchi, Sadao
• Language: English
• Published: 1983
• Subjects: East Antarctica; Mizuho; Mizuho Station; Antarc*; Antarctica; Memoirs of National Institute of Polar Research; Polar Research
• Online Access: https://nipr.repo.nii.ac.jp/record/1497/files/KJ00000012130.pdf; https://nipr.repo.nii.ac.jp/records/1497

P(論文) Acoustic sounding was used in observing a katabatic wind layer at the lowest few hundred meters over Mizuho Station (70°42′S, 44°20′E, 2230m above sea level), East Antarctica. Some examples of acoustic echo return showed the structure of surface inversions in connection with a katabatic wind and the behavior of breaking waves, e.g.a "herringbone" type structure described by EMMANUEL et al. (J. Atmos. Sci., 29,886,1972) as an unstable wave. Observations disclosed that wave-like motion exists in a layer between the heights of 100 and 300m and it has a shorter period than the calculated value from the Brunt-Vaisala frequency. This discrepancy was explained by a simple two-dimensional wave equation, considering the presence of mean atmospheric flow. departmental bulletin paper