1. Paper Review
Kirsten Feng

2. Comparison of East Asian winter monsoon indices
Gao Hui

3. Monsoon Circulation Components
The Siberian high and the Aleutian low in the sea level pressure (SLP) field
The deep trough in themiddle-higher level over the East Asian region
The predominant northwesterlies over northeastern Asia in the lower troposphere,
The strong westerly jet stream centers at southern Japan at higher level

4. 4 Definitions and the Bases
The land-sea pressure differences
(Shi, 1996)
The regional averaged meridional wind in the lower troposphere
(Ji and Sun, 1997;Chen et al., 2001)
The zonal wind in higher troposphere
(Jhun and Lee, 2004)
The East Asia trough
(Sun and Sun, 1995).

5. Variables, Regions and Meanings

6. Time series of the 4 EAWM indices

7. Power spectra of the 4 EAWM indices

8. Correlation coefficients of the EAWM indices

9. Correlation coefficients of each index with SLP

10. Correlation coefficients of each index with 500 hPa

11. Correlation coefficients of each index with surface air temperature

12. Thank you!