Time-Altitude Variation of 30-Second-Update Full Volume Scan Data for Summer Convective Storms Observed With X-Band Dual Polarized Phased Array Weather Radar

被引:0
作者
Kikuchi, Hiroshi [1 ]
Hobara, Yasuhide [1 ,2 ]
Ushio, Tomoo [3 ]
机构
[1] Univ Electrocommun, Ctr Space Sci & Radio Engn SSRE, Tokyo 1828585, Japan
[2] Univ Electrocommun, Grad Sch Informat & Engn, Tokyo 1828585, Japan
[3] Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, Japan
基金
日本学术振兴会;
关键词
Radar; Storms; Rain; Radar antennas; Meteorological radar; Radar polarimetry; Doppler radar; Precipitation; Weather radar; precipitation observation; full volume scan data; POLARIMETRIC SIGNATURES; SUPERCELL; PRINCIPLES; COLUMNS; WARM;
D O I
10.1109/ACCESS.2024.3433493
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Dual-polarization radars with parabolic dish antennas, which transmit horizontal and vertical waves, are widely used to measure precipitation. However, such radars cannot properly observe the convective storms developing at high altitudes in a short time because of the low spatiotemporal resolution of the data due to mechanical scanning at azimuth and elevation angles. In 2018, an X-band dual-polarized phased array weather radar (DP-PAWR) was developed in Japan. DP-PAWR provides polarimetric precipitation measurements via three dimensional (3D) volume scanning in 30 s using electronic scanning at elevation angles. This study investigated the relationship between the amount of full volume scan data (the radar reflectivity factor(Z(h)), differential reflectivity(Z(dr)), and specific differential phase(K-dp)) above the freezing level and that of near-surface rainfall for three characteristically different summer convective storms in Japan. We also discussed the quantitative predictability of near-surface rainfall volume using the full volume scan data above the freezing level obtained from DP-PAWR. The results showed that the 30-s full volume scan data above the freezing level can quantitatively predict near-surface rainfall volume for various storms, including heavy convective storms multi-precipitation cores, as well as small-scale convective storms with 5 t 11.5 minutes of lead-time.
引用
收藏
页码:104333 / 104343
页数:11
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