Study on Typhoon Center Monitoring Based on HY-2 and FY-2 Data

The location of a typhoon center plays an important role in moving track monitoring and forecasting. More and more new satellites are used to monitor typhoons. Combining multiple sources of satellite data has become popular for tropical cyclone monitoring in recent years. In this letter, we demonstrate a robust method of locating the typhoon center based on meteorological satellite (Feng Yun-2 (FY-2) satellite) and microwave scatterometer data (Hai Yang-2 (HY-2) scatterometer). First, we locate the typhoon center using HY-2 and FY-2 data independently. Next, we combine the results of the HY-2 and FY-2 analysis to produce an improved method of locating typhoon centers. Finally, three representative typhoons (ChanHom, Soudelor, and DuJuan) are used to validate our methodology. The results show that: 1) compared to FY-2 satellite data, the proposed results have more information on wind speed and direction and 2) compared to HY-2 satellite data, the proposed results have higher temporal resolution. Overall, the proposed method can improve typhoon monitoring results.