Accession Number : AD0751268

Title :   The Latitudinal Motion of Sunspots and Solar Meridional Circulations.

Descriptive Note : Physical sciences research papers,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Ward,Fred

Report Date : 21 AUG 1972

Pagination or Media Count : 27

Abstract : There are many theories of the large-scale circulation of the sun. Fundamental to many of these is a meridional cell which transports momentum between the pole and equator. Observational verification has devolved most often upon the analysis of the latitudinal drifts of sunspots. A comprehensive analysis of sunspot drifts shows some peculiar results. Two conclusions can be drawn from these results. First, sunspot data cannot be used to verify the existence of a mean meridional circulation on the sun. Second, the residual meridional drifts (averaged over time and longitude) are very much smaller than their day-to-day counterparts, lending support to the idea that the latter are the more fundamental to the large-scale solar circulation. (Author)

Descriptors :   (*SUNSPOTS, MOTION), SOLAR ATMOSPHERE, ATMOSPHERIC MOTION

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE