Wave Packet Diagnostics for Southern Hemisphere

Generated by Edmund Chang (assisted by Yanjuan Guo), Stony Brook University



The method to compute the wave packet envelope can be found in section 2c of Chang and Yu (1999): “Characteristics of wave packets in the upper troposphere. Part I: Northern Hemisphere Winter”. J. Atmos. Sci., 56, 1708-1728. For an introduction about what wave packets are and the applications of wave packet diagnostics, click here.

            Hovmoller diagram from Jan 13 – Feb 16 (2009)         

Wave Packet Diagnostics (based on GFS 16-day control forecast)

Diagnostics for Southern Hemisphere


            Diagnostics for Northern Hemisphere

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NCEP winter TPARC web page