. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering 180° I Figure 2-1. 76° 172° Location map 168° 164° 160° I56°W for the eastern Bering Sea. Sea, polair air masses usually predominate for extended periods of time. Frontal systems moving through the area generally represent a line of discon- tinuity of air masses of similar character, and con- sequently are much less severe. The ice pack dominates the Bering Sea from January through May (McNutt and Pease, this volume). After April the ice pack moves progres- sivel
. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering 180° I Figure 2-1. 76° 172° Location map 168° 164° 160° I56°W for the eastern Bering Sea. Sea, polair air masses usually predominate for extended periods of time. Frontal systems moving through the area generally represent a line of discon- tinuity of air masses of similar character, and con- sequently are much less severe. The ice pack dominates the Bering Sea from January through May (McNutt and Pease, this volume). After April the ice pack moves progres- sively northward and by July it is generally north of Bering Strait. The Bering Sea is ice free from July through September. Ice begins moving southward during October and reaches its southern limit near 60°N by February or March. The seasonal migration of the ice pack is extremely important for the climate of the Bering Sea. It introduces a continental influ- ence during winter which allows cold arctic and continental air to establish itself over the ice-covered sea with wide ranges in daily and seasonal temper- atures. This contrasts sharply with the entire Bering Sea in summer and the southern portion in winter, which have a maritime climate with a more uniform daily temperature regime and enhanced precipitation. NORTHEAST CAPE OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP in z o H UJ Q Q tr < o z < (/) X in UJ cr I- < < UJ 5. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ST. PAUL Figure 2-2. Annual temperature march and monthly standard deviations for Northeast Cape and St. Paul. There is greater annual range at the northern station. CLIMATOLOGICAL SUMMARY Data for this section were obtained from Climatic Atlas of the Outer Continental Shelf Waters and Coastal Regions of Alaska: Volume II—Bering Sea (Brower et al. 1977) and A Climatological Guide to Alaskan Weather (Grubbs and McCollum 1968). The data periods in Grubbs and McCollum "contain at leas
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