海洋大氣學門重點計畫-多重尺度海氣交互作用與生物效應研究

Project Details

Description

This proposed project intends to utilized the observational data collected from TAHOPE to investigate the precipitation mechanism. The dual-polarization radar plays an important role in understanding the characteristics of the kinematic and microphysical fields of the severe precipitation systems. The spatiotemporal distributions of the kinematic and microphysical fields can be derived from the dual-polarization measurements of: radial velocity, differential reflectivity (ZDR), differential phase shift (PHIDP), specific differential phase shift (KDP) andcorrelation coefficient (RHV) via the variationally-based multiple-Doppler radar synthesis method and fuzzy logic method. Moreover, the drop size distribution (DSD) of rain can also be retrieved from dual-polarization radar as well.Therefore, the evolutions and the structural characteristics of initiating, developing and dissipating stage of the precipitation systems can be investigated. In the previous two projects, the numerical simulation (WRF, NCAR) with sophisticated microphysical parameterization scheme and the dual-polarization moment forward operators were applied to the heavy precipitation event during TAHOPE. The results have shown some similarity compared to radar observations, but with some major discrepancy in DSD. The sensitivity test of various configures including spatial resolution, microphysical schemes, land surface scheme and radiation schemes will be further investigated and validated against the kinematic and microphysical retrieval from radar observations in thefollowing project.
StatusFinished
Effective start/end date9/12/2131/07/22

UN Sustainable Development Goals

In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This project contributes towards the following SDG(s):

  • SDG 13 - Climate Action

Keywords

  • Weather radar

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