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Basic Satellite and Radar Interpretation for Tropical Cyclones

NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION. Basic Satellite and Radar Interpretation for Tropical Cyclones. JACK BEVEN. NATIONAL HURRICANE CENTER. WHERE AMERICA’S CLIMATE AND WEATHER SERVICES BEGIN. Geostationary Satellites. GOES 8-12. METEOSAT-7. Polar Orbiting Satellites. NOAA.

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Basic Satellite and Radar Interpretation for Tropical Cyclones

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  1. NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION Basic Satellite and Radar Interpretation for Tropical Cyclones JACK BEVEN NATIONAL HURRICANE CENTER WHERE AMERICA’S CLIMATE AND WEATHER SERVICES BEGIN

  2. Geostationary Satellites GOES 8-12 METEOSAT-7

  3. Polar Orbiting Satellites NOAA QuikSCAT DMSP

  4. TRMM Satellite

  5. Image Enhancements • False coloring added to a satellite image to make image easier to interpret or to highlight important features • Useful enhancements include ZA (general use), MB (high clouds and convection), BD (tropical cyclones), and JF (low clouds)

  6. Image Enhancements ZA None

  7. Image Enhancements BD MB

  8. T.S. Lisa Channel 4

  9. T.S. Lisa

  10. Water Vapor Imagery • 6.7 m channel is sensitive to water vapor in the mid to upper troposphere (generally 200-500 mb) • Water vapor imagery can reveal features that don’t generate visible clouds • Water vapor imagery animation can reveal steering flows or shearing winds for tropical cyclones

  11. Water Vapor Imagery

  12. Satellite Winds • Satellite winds are computedfrom the displacement of targets on two successive images • Targets can include any type of clouds or features in water vapor imagery • Temperature of cloud or water vapor feature is used for height assignment

  13. HIGH-DENSITY VISIBLE SATELLITE WINDS

  14. Tropical Cyclones in Satellite Imagery IR - BD enhancement Visible

  15. Dvorak Technique Cloud Patterns

  16. Developing Cloud Patterns

  17. Weakening Cloud Patterns

  18. Dvorak Technique Output

  19. Dvorak Technique Flowchart

  20. Dvorak Technique Flowchart

  21. Dvorak Error Distribution

  22. Hurricane Mitch, October 1998

  23. Subtropical Cyclones Hebert-Poteat Technique Pre-Michael Pre-Karen

  24. Hebert-Poteat Examples

  25. QuikScat Wind Data

  26. RADAR TRACKING OF HURRICANES

  27. WSR-88D WINDS IN HURRICANES

  28. WSR-88D Doppler Wind Data Lili from the Lake Charles WSR-88D

  29. WSR-88D Rainfall Estimate for Tropical Storm Allison June 2001

  30. Eye Wobble - Carla 1961

  31. Radar, Aircraft, and Satellite Fixes from Lili Aircraft Fixes Radar Fixes Satellite Fixes Best Track

  32. Useful Web Sites - Satellite • TPC Satellite Web Page: www.nhc.noaa.gov/graphics.html • NOAA GOES Web Site : www.goes.noaa.gov/ • RAMDIS Online: www.cira.colostate.edu/ramm/rmsdsol/TROPICAL.html • Satellite ServicesDivision: www.ssd.noaa.gov • CIMSS Tropical Cyclones: www.ssec.wisc.edu/tropic/ • CIMSS AMSU Page: amsu.ssec.wisc.edu/ • CIRA AMSU Page: www.cira.colostate.edu/ramm/tropic/amsustrm.asp • QuikSCAT Winds: manati.wwb.noaa.gov/quikscat/ • NRL Tropical Cyclones: www.nrlmry.navy.mil/sat-bin/tc_home

  33. Useful Web Sites - Radar • NWS Master Radar Page: www.nws.noaa.gov/radar_tab.html

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