. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering 26 Physical oceanography. Figure 3-3. Mean 700 mb contours (tens of feet) for February 1967 (Posey 1967). the heat budget and that net radiation is typically the dominant heat flux in the southeast Bering Sea in summer. During the early fall, evaporation becomes important due to increased wind and rapid cooling of the overlying atmosphere. The conclusion dravi^n from both of these studies is that net heat gain or loss comes about primarily through air-sea interac
. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering 26 Physical oceanography. Figure 3-3. Mean 700 mb contours (tens of feet) for February 1967 (Posey 1967). the heat budget and that net radiation is typically the dominant heat flux in the southeast Bering Sea in summer. During the early fall, evaporation becomes important due to increased wind and rapid cooling of the overlying atmosphere. The conclusion dravi^n from both of these studies is that net heat gain or loss comes about primarily through air-sea interaction, and that due to the low net flow on the shelf, fluctu- ations in heat are retained longer than in an advective system. To test this idea, an autocorrelation analysis was done on the deviations from mean monthly SST from the Pribilof Islands for the years 1963-78 (Fig. 3-6). Significant correlation up to 23 months' lag suggests that these anomalies in SST on the eastern Bering Sea shelf do, in fact, persist for at least two years. Thus, if the atmosphere does drive the ocean (Davis (1976) suggests that it does although Namias (1978) points out that there are probably many and varied feedback loops between ocean and atmosphere and that the subject is highly complex), then Fig. 3-6 suggests that short-term climatic fluctuations may also persist for at least two years. However, Namias and Born (1970) showed that temporal coherence among monthly mean SST patterns in the North Pacific is far greater than any known meteorological coherence; they also found that the SST coherence persists for as long as two years. That fluctuation in the mean winter atmospheric circulation is the driving force behind the observed large year-to-year fluctuations in SST is also con- sistent with the observation of Coachman and Charnell (1979) that there is significant correlation between June bottom temperatures on the eastern. Please note that these images are extracted from scanned page images th
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