[A-CG45] Promotion of climate and earth system sciences using manned/unmanned aircrafts

[ACG45-P05] Simulation of typhoon observation by airborne polarimetric radar (4)

*Nobuhiro Takahashi¹, Sachie Kanada¹ (1.Institute for Space-Earth Environmental Research, Nagoya University)

Keywords:Aircraft observation, Typhoon observation, Polarimetric radar

In the three previous presentations, we have reported on the possibility of observing typhoons with airborne dual-polarization radar using numerical weather simulation data. The result showed the feasibility of observation and the challenges in securing observation coverage with limited observation time, and the possibility of using the precipitation intensity. We reported the possibility of utilizing the ground (sea) surface scattering as a constraint condition in the precipitation retrieval algorithm. Subsequently, we newly addressed the issue of the large Z of snowfall appearing in the observation simulations, and in addition to the previous X-band observations, we extended them to the Ku, Ka, and W bands to confirm the differences between frequencies. Particular attention was paid to nadir observations to evaluate the leakage of horizontal wind into Doppler velocity, and it was found that the effect of aircraft attitude was significant.