Accession Number:

ADA099681

Title:

Interactions within the Ocean-Ice-Atmosphere Systems of the North Pacific and the North Atlantic,

Descriptive Note:

Corporate Author:

ARCTIC INST OF NORTH AMERICA ARLINGTON VA

Personal Author(s):

Report Date:

1981-02-01

Pagination or Media Count:

57.0

Abstract:

Four regional indices of sea ice variability and thirty years of monthly sea surface temperature SST and sea level pressure SLP data are used to evaluate the large-scale interactions within the ocean-ice-atmosphere systems of the North Pacific and the North Atlantic. A direct association between positive negative SST anomalies and light heavy ice in the Bering Sea is indicated. The SSTice coupling in the northern Alaskan waters is also statistically significant. The SST anomalies in both the North Pacific and the North Atlantic appear as persistent responses to atmospheric forcing. The SLP distributions over both oceans correlate significantly with the arctic SLP distribution, although the midlatitude atmospheric circulation shows no systematic tendency to lead to lag the arctic circulation. Sea ice fluctuations correlate most highly with the atmospheric forcing over antecedent periods of approximately 9 months in the northern Alaskan waters, 3-4 months in the Bering Sea, and 5-7 months in the East Greenland Sea. The strength of the 9-month mean onshore air flow component describes over 70 of the northern Alaskan ice variance. Author

Subject Categories:

  • Meteorology
  • Physical and Dynamic Oceanography
  • Snow, Ice and Permafrost

Distribution Statement:

APPROVED FOR PUBLIC RELEASE