The Basic Atmospheric and Ocean Energy Budgets - The Arctic Climate System - page 71

Figure 3.4. The zonal mean (averages by latitude) annual cycle of northward
atmospheric energy transport, averaged for 1979-2001 (PW). Negative values in
the Southern Hemisphere mean transport to the south (toward the South Pole) (from
Trenberth and Stepaniak, 2003 , by permission of AMS).
Figure 3.5. Schematic of the energy balance
of an atmospheric column and underlying
subsurface column, the latter representing
either land or ocean. Terms are defined in
the text (courtesy of N. Vizcarra, NSIDC,
Boulder, CO).