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Zhao Bingke Shanghai Typhoon Institute, CMA 4 May 2009. Asheville, USA.

How to acquire best track TC data in STI. Zhao Bingke Shanghai Typhoon Institute, CMA 4 May 2009. Asheville, USA. Missions. To undertake basic and applied research related to tropical cyclone

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Zhao Bingke Shanghai Typhoon Institute, CMA 4 May 2009. Asheville, USA.

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  1. How to acquire best track TC data in STI Zhao Bingke Shanghai Typhoon Institute, CMA 4 May 2009. Asheville, USA.

  2. Missions • To undertake basic and applied research related to tropical cyclone • To become a national center for TC information, transition of TC research into operations and training of TC research personnel

  3. ScientificGoals • To study the mechanisms of formation, intensity change, structure evolution, and movement of TCs • To understand the interaction between TC and its environment, and the underlying surfaces • To provide effective techniques for the prediction of frequency, track, intensity and the wind and precipitation distributions of TC

  4. TC data and related data acquisition TC data: • Typhoon datagram from all channels (China, Japan, Hong kong, Philippines,USA, Etc.) • Satellite nephogram (FY-2C , FY-2D, FY-3A, MTSAT-1R, NOAA) • QuikScat (twice a day) • Synoptic situation (Surface and altitude below 500hPa) • Observation (About 2000 meteorological stations) • Radar (16 Weather radars in east China, S band or C band) • Disaster information( From civil administration bureau) • News(From newspaper,broadcast, TV etc.)

  5. Two. Best track determination • Mainly based on FY-2C, FY-2D stationary satellites, FY-3A Polar satellite and QuikScat (Dvorak method) • Strong TC and TC eye is clear TC center location is mostly based on cloud image. There is little difference in all operation departments. • When TC is near China coast or it has landed China Single station observation (including pressure, wind, weather condition ) from CMA climatological station and radar data are the only basis for TC center location and intensity estimate.

  6. When TC just generates and it is very weak • TC center location is very difficult. The geometric center is often selected considering track’s Coherence and moving speed without mutation. At the same time other country’s location result is often referenced. There is maybe a much bigger location error. In fact, there is no observation to test it.

  7. concentric circles eye/round eye/elliptic eye/semicircle eye /irregular eye/Crushing eye/no eye

  8. Frequency difference of TC and TY from CMA, JTWC,and JMA Tropical Cyclone Typhoon or Hurricane TC TY Frequency Frequency Year Year

  9. Best track data distribution • TC Yearbook 59 TC yearbook have been published since1949. (1949-2007) General situation, frequency, track, intensity, temporal and spatial distribution, landing information, gale and precipita- tion of TC activity in this year.It is basic TC data published to foreigner by Chinese official. • WWW.typhoon.gov.cn • Climatological atlas for TC affecting China • Historical data retrieval system for operation • others

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