Large-Scale Surface Flow Patterns on the Sun

Details Large-Scale Surface Flow Patterns on the Sun Large-Scale Surface Flow Patterns on the Sun

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spd....31.0104s&link_type=abstract

American Astronomical Society, SPD Meeting #31, #01.04; Bulletin of the American Astronomical Society, Vol. 32, p.801

Astronomy and Astrophysics

Astrophysics

Scientific paper

I derive the large-scale flow field at the solar surface from tracking features at supergranular scale (10 Mm) through SOHO/MDI full-disk Dopplergrams recorded during 62 days in 1996 and reduced at Stanford University to a dataset with a pixel scale of 1.39 Mm and a cadence of 15 minutes. Both the dataset and the reduction algorithms are improved compared to earlier investigations. I present measurements, derived from supergranular motion, of differential rotation and meridional flow, and synoptic maps of the solar surface flow and its variation in time. This work is supported by the SOI/MDI project at Stanford University and Lockheed Martin Solar & Astrophysics Laboratory (grant NAG5-3077).

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