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. 2013 Aug 12;3:2410. doi: 10.1038/srep02410

Figure 3. Temporal variation of zonal winds from the Voyager epoch to the Cassini epoch.

Figure 3

The zonal winds in Saturn's upper troposphere (i.e., 50–750 mbar) are computed from the temperature fields by a modified thermal wind equation. The regions within the black lines are left blank because the cylindrical routines of the modified thermal wind equation do not pass the regions. (A) Zonal winds derived from the Voyager/IRIS temperature (1980–81). (B) Zonal winds derived from the Cassini/CIRS temperature (2009–10). (C) Differences of Saturn's zonal winds between Voyager and Cassini.