Accession Number : ADP007282

Title :   Interannual Variability of the January Meridional Heat Transport by Planetary Waves in the Northern Latitudes,

Corporate Author : ATMOSPHERIC ENVIRONMENT SERVICE DOWNSVIEW (ONTARIO)

Personal Author(s) : Higuchi, Kaz ; Lin, Charles A. ; Shabbar, Amir ; Knox, J. L.

Report Date : MAR 1992

Pagination or Media Count : 6

Abstract : Evidence of large temporal and spatial variability in the eddy fluxes of sensible heat in the lower troposphere (100-50 kPa thickness layer) in January, from 1946 to 1988, is presented. The spatial distribution of the standing eddy heat flux is dominated by three main features, or centers of action: (1) a region north of Korea (extreme eastern Siberia), (2) northeastern Atlantic Ocean, and (3) the Gulf of Alaska. Even though the center just north of Korea is the most active heat transport area, most of the interannual variability of the January standing eddy heat flux is associated with the heat transport centers over the northeastern Atlantic and the Gulf of Alaska, correlated with the positions of the Icelandic Low and the Aleutian Low, respectively. This year-to-year variability in these two geographical locations is due to interannual variability in the planetary waves van Loon and Williams, 1980, and a significant role of the air-sea interaction in this respect cannot be ruled out.

Descriptors :   *HEAT FLUX, *ATMOSPHERICS, AIR WATER INTERACTIONS, ATLANTIC OCEAN, DISTRIBUTION, INTERACTIONS, OCEANOGRAPHY, SPATIAL DISTRIBUTION, THICKNESS, TRANSPORT, GREENHOUSE EFFECT, ENVIRONMENTAL IMPACT.

Subject Categories : Meteorology
      Atmospheric Physics
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE