Diurnal variations of the planetary boundary layer observed with anL-band clear-air doppler radar |
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| Authors: | Hiroyuki Hashiguchi Manabu D Yamanaka Toshitaka Tsuda Mamoru Yamamoto Takuji Nakamura Tatsuhiro Adachi Shoichiro Fukao Toru Sato Daniel L Tobing |
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| Institution: | (1) Radio Atmospheric Science Center, Kyoto University, 611 Uji, Kyoto, Japan;(2) Department of Electrical Engineering II, Kyoto University, 606 Sakyo, Kyoto, Japan;(3) Agency for the Assessment and Application of Technology (BPPT), 10340 Jakarta Pusat, Indonesia |
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| Abstract: | Based on continuous observations of the planetary boundary layer (PBL) with anL-band (1357.5 MHz) boundary-layer radar (BLR) at a hilly location in Japan, we have discovered that on clear days, a thin enhanced echo layer corresponding to the top of the PBL (or mixed layer) appeared at about 500 m height in the morning and ascended to about 1500 m in the afternoon. Strong upward velocities were observed below the echo layer (or inside the PBL), reaching 1500 m in the afternoon. |
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