1. Dec.18Z500 T850 mehori@jamstec.go.jp / mehori@climate.jp 2. +0.81+0.71 3. 1 2009 12/1812 / 03 12 / 0912 / 18 Z500 T850 4. 5. 2 2009 11/ 310 / 2411 / 03 Z500 T850 6. 3 2009 11/17 10 / 05 11 / 17 Z500 T850 7. 4 2009 10/10 10 / 03 10 / 10 Z500 T850 8. 4 2010 4/17 Z5004/94 / 14 4/17 T850 9. Area Averaged Indices 30070-90N0-100E0 4.0 45-65N40-120E -4.08.0 35-45N 120-140E -8.010 11 12 1 23 10. AO / NAO Index AO NAO 11. 12. NFLUENCE OF ARCTIC SEA ICE ON EURASIA L08707 L08707 HONDA ET AL.: INFLUENCE OF ARCTIC SEA IC Figure 3. Same as in Figures 2c and 2d but for (a) 250-hPa geopotential ptember. Solid lines indicate 50% sea-ice concentration for 2007 (blue), 2005 meridional velocity associated with transient eddies with periods shor 250-hPa 13. t - 14 Z500 T850 14. t - 13 Z500 T850 15. t - 12 Z500 T850 16. t - 11 Z500 T850 17. t - 10 Z500 T850 18. t - 09 Z500 T850 19. t - 08 Z500 T850 20. t - 07 Z500 T850 21. t - 06 Z500 T850 22. t - 05 Z500 T850 23. t - 04 Z500 T850 24. t - 03 Z500 T850 25. t - 02 Z500 T850 26. t - 01 Z500 T850 27. t - 00 Z500 T850 28. 2009-2010101 112 123 29. 30. 2009.12 : NASA 31. H 2009.12 : NASA 32. H 2009.12 : NASA 33. H 2009.12 : NASA 34. H 2009.12 : NASA 35. H L H L2009.12 : NASA 36. H L H L2009.12 : NASA 37. Thank You! 38. 17:15 B 2009/2010