Search

The mean temperature for the Northern Hemisphere had a warming trend from 1890 to 1950 and a cooling trend since 1950. The eastern and central United States had colder temperatures in 1961–1970 than in 1931–1960. The temperature changes were associated with an adjustment of hemispheric circulation from more frequent zonal flow between 1900 to 1950 to more frequent meridional flow since 1950. Regional variations in magnitude and direction of the change were largely related to position in relation to the upper air westerly wave pattern. Time series of individual circulation indices tend to resemble the step function model of climatic change. [ABSTRACT FROM AUTHOR]

Examines the differences in circulation patterns of climatology between the two eastern littorals in the northern hemisphere. Interception of the ground by the subtropical ridge in East Asia; Role of the trade-wind inversion as a lid to oppose strong convection; Description of the rhythm of the winter monsoon in East Asia.