Session M1/H2: Magnetic Activity: Sunspots & ARs Tuesday, Valentine's Day, 2006 10:30 - Noon Organizers: Bill Abbett, Rudi Komm, Todd Hoeksea This session is a working science session focused on bringing together modelers, theorists, and observers, magneticians and helioseismicators to foster collaboration, to identify scientific challenges, and to determine how HMI and AIA data products can be best used to address these challenges. Invited speakers: Bill Abbett - Introduction - 10 min Mats Carlsson - From detailed magnetoconvection to simulations of the convection zone-corona system - 20 min Doug Braun - Using helioseismology to probe magnetic structures - 20 min Neal Hurlburt - Linking models and observations - 5 min Tom Berger - High resolution photospheric observations - 5 min Brian Welsch - Inferring surface flows from vector magnetograms - 5 min We expect that the session should have a real workshop feel, and that the discussion will be lively!