Coastal Ocean Dynamics Application Radar Data

  Taiwan Ocean Radar Observing System (TOROS) of TORI has completed establishing 18 stations under CODAR system progressively since 2009 to January 2015 including twelve 5 MHz stations and six 13/24 MHz stations. To eliminate the blind area in offshore observation of the island, the FALA standard station has been added in September 2017 to gain currents data from Pingtung coastal area to Hsiao Liouciou Island. Setting up the FALA station has provided fine data support for marine science research and salvage.

   Data application:Total Velocity(TUV) ,Radial Velocity(RUV) and Raw data

1. Since the radar system may have difference in observing distant and resolution by using different frequency and bandwidth. TOROS establisher stations in accordance with different measurement purposes and is currently producing grid product under three different ranges and resolutions by time, including near real-time informations such as total area (10km), southwest area (4km) and South Bay area (1km).

Table 1. Total Velocity

Fig 1. Main Operational Observation Products(Total area, South west area and NanWan Bay area)

2. TOROS provides a method to improve radial velocity(RUV), which is capable to separate the surface current reflectance from higher-order receiver signals and improve quality of radials. First, remove unreasonable data based on quality control (QC) procedure such as the spatial continuity, temporal continuity and temporal gradient of real-time radial velocity (per monthly/seasonal/typhoon event).

3. The radar raw data should be controlled for 3 years. Now only (CSQ, Cross Spectra) and (CSS, Short Time Cross Spectrum) from all stations are available, but not the (TS, Time Series) and (RS, Range Series). Please refer to Table 2 for more information if wish to apply for raw data of each station. It is recommended that the starting date of the data should be from 2012/12.

Table 2. TOROS information