1. Overview of East Asian Summer Monsoon etc
Department of Meteorology
The Grantham Institute for Climate Change
Overview of East Asian Summer Monsoon etc
Brian Hoskins

2. Mean sea level pressure
(ERA40 data)
Dec-Feb L L H H
June-Aug H H L

3. Average Surface Temperature
Dec - Feb
June-Aug

4. Winds at 925hPa
Dec-Feb
June-Aug

5. Winds at 200 hPa
Dec-Feb
June-Aug

6. Rainfall (mm/day)
Dec-Feb
June-Aug

7. Column integrated Heating

8. Average Temperature 200-500 hPa
Dec-Feb
June-Aug

9. Streamfunction & velocity potential at 200 hPa
DJF

10. Summer monsoon & subtropical anticyclone cartoonW C C W C
Equator

11. Climate of Chinese summer rainfall in the period 1958-2007
Yonghui Lei

12. Summer: Moisture transport by the atmosphere
May H
July

13. Moisture transport
June
July
August

14. Seasonal Progression of the Meiyu-Changma-Baiu Front 335K Ɵe at 850 hPa
Yonghui Lei

15. Latitude-time section at 105-122E Chinese summer rainfall

16. Baiu lat-time 130-140E composited with respect to its end-day
Shin-ichi Suzuki
Θe at 850
Precip rate

17. Composites of 325K Ɵe at 850 hPa wrt Baiu end

18. 20-60N 250 Streamfunction departures composited wrt Baiu end

19. Dominant patterns of winds and OLR associated with summer intraseasonal oscillations
850hPa – Active phase over India
Dominant EOF pattern of OLR associated with peak active/break spell over India
200hPa – Active phase over India
Annamalai, Slingo and Sperber

20. Direct response to Tibetan Plateau
Liu et al, 2007
Idealised shape
Realistic shape D D U U

21. Response to Tibetan Plateau, including heating above it
Liu et al, 2007 D U D U
Fig. 5

22. Extreme states of Intra-seasonal Oscillation in model
Fig. 9

23. Fig. 7

24. Trend in measured summer rainfall 1958-2007
Yonghui Lei
Yonghui Lei mm

25. Two summer rainfall patterns
Yonghui Lei

26. Two summer rainfall patterns 1901-2002 (CRU data)

27. Rainfall Intensity & Frequency 1958-2007
Yonghui Lei

28. Regression of surface temperature on PCs of Chinese summer rainfall previous spring & summer

29. EOF1 of summer rainfall & Tibetan Plateau temperatures
Wang et al 2008

30. Overview of East Asian Summer Monsoon etc
Department of Meteorology
The Grantham Institute for Climate Change
Overview of East Asian Summer Monsoon etc
Brian Hoskins

31. DJF Heating below 700 hPa

34. Total Precipitation

35. Fig. 6

36. Fig. 12