2013-01-09T10:55:19.000Z http://sot.lmsal.com Mr. Sam Freeland Lockheed Martin Solar and Astrophysics Laboratory (LMSAL) http://www.lmsal.com Lockheed Martin Advanced Tech Center, 3251 Hanover Rd, O/ADBS, B/252, Palo Alto, CA 94304 null null HINODE SOT Sterling 101 Synoptic Sun Center Synoptic DC, SYN 19 0 0 223 111 2009-03-07T15:59:30.000Z 2009-03-07T15:59:49.000Z 0 0 Synoptic Synoptic BFI NFI (revised: small, no mask) The solar polar regions play a critical role in the solar dynamo and activity cycle. Magnetic field of active regions is transported by meridional flows from low latitudes to the polar regions. This flux transport causes reversals of the global magnetic field of the Sun around the time of activity maxima. The amount of magnetic flux accumulated in the polar regions determines the strength of the future sunspot cycle. For understanding the mechanism of the cyclic magnetic activity it is very important to measure the properties of the meridional flows and supergranular dynamics in the high-latitude regions, and their variations during the solar cycle. XRT joins the campaign for detection of waves propagating into corona. ivo://sot.lmsal.com/VOEvent#2009-03-07T15:59:00Z