The Development and Verification of the Short-Term Qpf of Heavy Rainfall in Taiwan and Vicinity Area by Assimilating Radar and Other Observations

Project Details

Description

This proposal is a sub-project of an integrated project, which is based on the 2019 disaster prevention policy released by MOST with the purpose of developing radar data QC procedures and advanced data application technologies. The goal of this sub-project is to improve the radar data retrieval methodology so that high spatiotemporal resolution of three dimensional meteorological fields over complex terrain can be retrieved. By using these high quality data sets, it is possible for researchers to identify the key factors controlling the evolution of the convection, and design proper high resolution data assimilation technique to conduct short term forecast of severe weather events. In recent years the applicant has developed a multiple-Doppler radar wind synthesis method WISSDOM (WInd Synthesis System using DOppler Measurements). WISSDOM is capable of using data collected by any number of weather radar, and merging wind information from mesoscale model forecast, surface station, radiosonde, wind profiler, and low level wind over ocean derived by satellite, to synthesis the flow field along radar base line as well as over complex terrain. WISSDOM is particularly useful in analyzing wind fields over Taiwan’s complex topography and vicinity area.By using the three-dimensional wind field from WISSDOM, the applicant has developed an algorithm to directly retrieve the thermodynamic fields (including pressure and temperature perturbation) over terrain, and measure the water vapor field. Then, the observed and retrieved three dimensional meteorological parameters will be applied to initialize a high resolution numerical model. In this research multiple representative real cases will be selected and tested so that one can evaluate the improvement of the model ability in forecasting severe rainfall events in mountainous regions.
StatusFinished
Effective start/end date1/08/2031/10/21

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 11 - Sustainable Cities and Communities
  • SDG 14 - Life Below Water
  • SDG 17 - Partnerships for the Goals

Keywords

  • Multiple-Doppler radar wind synthesis
  • thermodynamic retrieval over terrain
  • QPF in mountainous area.

Fingerprint

Explore the research topics touched on by this project. These labels are generated based on the underlying awards/grants. Together they form a unique fingerprint.