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The thermal balance of the earth is maintained by a transport of heat from the tropics, where incoming solar radiation exceeds outgoing radiation, to middle and high latitudes, where outgoing radiation exceeds incoming radiation. Previously, it was believed that this transport occurred primarily in the atmosphere. Recent results [Vonder Haar and Oort, 1973; Oort and Vonder Haar, 1976; Hastenrath, 1980] indicate that the atmospheric transport is indeed dominant at high latitudes, but that the oceanic component is responsible for most of the transport out of the tropics.