Citation: Debashis NATH, CHEN Wen, WANG Lin, MA Yin. Planetary Wave Reflection and Its Impact on Tropospheric Cold Weather over Asia during January 2008. ADVANCES IN ATMOSPHERIC SCIENCES, 2014, 31(4): 851-862, doi: 10.1007/s00376-013-3195-8. 

http://159.226.119.58/aas/article/2014/2014-31-851.html or

http://link.springer.com/article/10.1007%2Fs00376-013-3195-8

Key findings:

1. In January 2008, a planetary wave train propagated upward from Baffin Island and was reflected back to the troposphere.

2. The reflected planetary waves, together with the tropospheric blocking, lead to the cold weather over the Middle East and South-central China during 16-21 January 2008.

Longitude-time section of reflective index. The differences between zonal wind at 2 hPa and 10 hPa, averaged over 58 ^°-74 ^°N (upper panel) and between 10 hPa and 50 hPa, averaged over the same grid (bottom panel), are shown. Negative and positive index values indicate reflective and nonreflective basic states, respectively.

Summary Slide Show