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Jae-Myun Shim(jmshim2@kma.go.kr) Meteorological Satellite Division

Current Status of Data Exchange and Application for ATOVS in KMA. Jae-Myun Shim(jmshim2@kma.go.kr) Meteorological Satellite Division Korea Meteorological Administration. APSDEU-7/ 20-22 September 2006/ NOAA. Contents. Facilities for Satellite Data Acquisition

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Jae-Myun Shim(jmshim2@kma.go.kr) Meteorological Satellite Division

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  1. Current Status of Data Exchange and Application for ATOVS in KMA Jae-Myun Shim(jmshim2@kma.go.kr) Meteorological Satellite Division Korea Meteorological Administration APSDEU-7/ 20-22 September 2006/ NOAA

  2. Contents • Facilities for Satellite Data Acquisition • Applications for Weather and Environmental Analysis • Geostationary Satellite • Polar Orbital Satellite • Product Service • Satellite Data Assimilation • Status and Plan for Data Exchange of ATOVS

  3. Milestones of Satellite Service in KMA • 1 Dec. 1970: Install APT (Automatic Picture Transmission) system to acquire the satellite images of ESSA-8, and NOAA-1 • 14 Jul. 1977: GMS-1(Japan) was successfully launched (140E) • 1 Apr. 1979 : Acquired and used GMS-1 image (LR fax image) • Up to 2004 : GMS, NOAA, FY, GOES series data had been acquired and used operationally for weather forecast in KMA • MDUS : MESDAS-I(1989), MESDAS-II(1998) • 2001-2004 : Develop and install receiving system for EOS satellite like Terra and Aqua for Earth and Environment monitoring • 2005 : Receive and use FY-2C data, MTSAT-1R, and NOAA-18, successfully • 2008 : COMS will be launched

  4. Flow of Satellite Service MTSAT, FY, Meteosat, NOAA, Terra, Aqua etc. Raw Data Munsan Seosan Seoul H.Q. Foreign Satellite data Service Center (eg : NASA) FTP • Forecast Office • Numerical prediction model • Government Organization • Commercial Weather Sector Intranet, Exclusive Line Internet, Offline Service • MESDAS-II • (Meteorological Satellite Data • Reception/Analysis System) • Based on TeraScan System • ACAP(Aqua Catalogue and Product) • Special Receiving System • Public • Research Institute / University

  5. Munsan Weather Station : - METEOSAT-5 - Terra, Aqua Seoul (KMA) : - NOAA-12,17,18 - MTSAT-1R, FY-2C Seosan Weather Station : - NOAA-12,15,18 - FY-1D

  6. Polar Orbit (NOAA Series) Diameter : 1.5 m (Radom 1.8m) Band : L-band(SEOUL) Geostationary (MTSAT-1R:MDUS) Diameter : 3.7m Band : L-Band (SEOUL) Antenna System EOS (TERRA, AQUA) Diameter : 3.6m(Radom 4.2m) Band : X-Band(MUNSAN) Polar Orbit (NOAA Series) Diameter : 1.5 m (Radom 1.8m) Band : L-band(SUSAN)

  7. Operational Satellite and Products

  8. Contents • Facilities for Satellite Data Acquisition • Applications for Weather and Environmental Analysis • Geostationary Satellite • Polar Orbital Satellite • Product Service • Satellite Data Assimilation • Status and Plan for Data Exchange of ATOVS

  9. Geostationary Satellite Since July 2005, MTSAT-1R data have been operationally used for weather forecast.

  10. Cloud Analysis using MTSAT-1R Atmospheric Motion Vector Cloud Top Temperature

  11. Combined Image of Geostationary Satellite MTSAT-1R and Meteosat-5 (per one hour)

  12. Contents • Facilities for Satellite Data Acquisition • Applications for Weather and Environmental Analysis • Geostationary Satellite • Polar Orbital Satellite • Product Service • Satellite Data Assimilation • Status and Plan for Data Exchange of ATOVS

  13. Polar Orbiting Satellites Current Status KMA has three different sites for receiving data from polar-orbiting satellites. Seoul (KMA) : NOAA-12, 17, 18 Seosan (100 km southwest from Seoul) : NOAA-15, FY-1D Munsan (50 km northwest from Seoul) : Terra, Aqua On-going Since July 2004, the raw pass data of FY-1D are directly received. IR (Ch 4) images of FY-1D have been produced for forecast since October 2004. We are testing the L1B data to produce derived products from FY-1D. Future Plan KMA has the plan to receive data from the polar orbiting satellites of next generation. METOP (2007), NPP (2009), NPOESS (2012?-)

  14. Polar Orbiting Satellites Images Images Providing images of VIS, IR in the area of Asia and Korea. Providing improved images using high-resolving spectral observation. Providing true color composite images for detect fire and Asian dust. AQUA MODIS NOAA AVHRR

  15. NOAA-AVHRR Imaginary Products IR(ch4) VIS(ch1) Composite Image VIS & IR Near IR(ch2) Enhanced IR

  16. Typhoon analysis system ( TBB, SW, SST Composite Image Display) 2006. 9.16 Typhoon SHANSHAN

  17. Weekly Composite of AVHRR Weekly Composite of MTSAT-1R Products-SST Both MTSAT-1R and NOAA data are used to derive the SST field. Weekly composite data are provided for SST field. High resolution SST field shows several benefits in the NWP model.

  18. FOG FOG NOAA IR NOAA Near IR Products-Fog detection • Method • KMA uses NIR (3.9 m) to detect fog. • Dual Channel Difference (DCD) Method is used to detect fog.

  19. Retrieval Processes of ATOVS Retrieval Program AAPP (ATOVS and AVHRR Processing Package, v5.2, NWP SAF) : Produce L1d data IAPP (International ATOVS Processing Package, v2.1, SSEC) : Retrieve L2 data Retrieved Data T, Td, WV, GPH, wind, Cloud, TPW, rain rate, total ozone, Tbb (HIRS, AMSU) etc.

  20. Coverage of available received data(2001.8)

  21. Retrieved Products of ATOVS • Products • Data : T, Td, Wind, GPH • Layer : 1000, 950, 920, 850, 700, 500, 400, 300, 250, 200, 100 hPa (11 layers) 850hPa (T-Td) 200hPa (wind speed)

  22. Verification of ATOVS (T, Td) • Each Profile • Sonde data at three points over Korea are used for the comparison of each profile. • Providing the characteristics of ATOVS for each weather case. Large difference of ATOVS in the case of inversion layer.

  23. Verification of ATOVS (T, Td) • Weekly Average • Bias and RMSE for every week at three points are produced and displayed in intranet. • Providing more systematic errors of ATOVS. Dew point temperature profile Bias =  10C RMSE = 15C Maximum at around 300hPa Temperature profile Bias =  0.5C RMSE = 1.5C

  24. Contents • Facilities for Satellite Data Acquisition • Applications for Weather and Environmental Analysis • Geostationary Satellite • Polar Orbital Satellite • Product Service • Satellite Data Assimilation • Status and Plan for Data Exchange of ATOVS

  25. Products service through Intranet

  26. Products service through Internet www.kma.go.kr / www.weather.go.kr

  27. Satellite Information Service Systemhttp:siss.kma.go.kr

  28. Contents • Facilities for Satellite Data Acquisition • Applications for Weather and Environmental Analysis • Geostationary Satellite • Polar Orbital Satellite • Product Service • Satellite Data Assimilation • Status and Plan for Data Exchange of ATOVS

  29. Satellite Data Assimilation in KMA • Operation • MTSAT-1R TBB bogus data • Direct use of ATOVS level 1D data in 3dVar • SATOB (BUFR) and SATEM data • QuikScat data assimilation using MRF PBL operator in the global and regional 3dVar • Semi-operation • Apply FGAT with ATOVS data • MODIS polar wind • SSM/I data • Unified 3dVar with ATOVS level 1C data • GPS Radio Occultation data assimilation ※FGAT : First Guess at Appropriate Time

  30. ATOVS DATA NUMBERS • MODEL: GDAPS (Global Data Analysis and Prediction System ) - T426L40 (0.28125°) • ANALYSIS : 3DVAR • CASE : 2005.10.04.00 UTC ~ 10.14.12 UTC ( 6 hourly cycle, 10 days forecast) 9 % ↑

  31. Number of ATOVS (2005.10.04.) CTRL FGAT

  32. 500hPa GPH RMSE 2005 JJA 2005-6 DJF

  33. Future Data Assimilation Plan • Use direct readout ATOVS data • Operation of 1dVar for the SSM/I radiance data to update surface wind • Replace MTSAT-1R bogus profile to direct assimilation of water vapor channel of MTSAT 1R • Operation of the unified 3dVar for global and regional Data Assimilation with adaptive bias correction method

  34. Contents • Facilities for Satellite Data Acquisition • Applications for Weather and Environmental Analysis • Geostationary Satellite • Polar Orbital Satellite • Product Service • Satellite Data Assimilation • Status and Plan for Data Exchange of ATOVS

  35. Background and history • It was discussed at APSDEU-6 that ATOVS data would be exchange in Asia-Pacific area. • It was decided that Tokyo and Beijing would be the intra-regional data centers. • First exchange test within A-P area would have been finished till the end of 2005. • KMA has started the detailed discussion to implant RARS system with JMA since May 2006. • Format and telecommunication method for ATOVS data exchange was finalized according to the discussion with JMA. • KMA prepared the encoding and decoding program for ATOVS data during June 2006. • KMA debugged errors in BUFR data to be ready for data exchange from July to early August 2006. • KMA finished to produce ATOVS BUFR data to be exchanged with JMA by August 2006

  36. Current Status and Future Plan • Data to be exchanged : ATOVS AAPP L1C (HIRS, AMSU-A, AMSU-B) • Data format : Compressed BUFR • Telecommunication : GTS between Seoul and Tokyo • Data from Seoul to Tokyo : 1 HRPT station (Seoul) • Data from Tokyo to Seoul : 9 HRPT station (2 Japan, 3 China, 4 Australia) • First test exchange succeeded on 15 September between Seoul and Tokyo. • Data exchange for routine operation would be performed since 20 September. • Exchanged ATOVS data will be utilized in regional NWP model

  37. Thank you 감사합니다

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