2019-07-30T16:04:06.000Z 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 Arikawa Brooks Cruz(RCO) 0 HOP 249 S Pole Spicules IRIS S. Pole LMB LMB 10 -50 -931 55 55 2014-09-07T00:04:31.000Z 2014-09-07T01:49:57.000Z -50 -931 Spicule Evolution HOP 249 Ca deep and high-cad, ROI 3 Objective: To determine the thermal evolution and wave properties in spicules Scientific Background: Hinode and ground-based observations of spicules have indicated the presense of vigorous Alfvenic waves, and suggest that these ubiquitous features play an important role in the energy and mass balance of the outer solar atmosphere. Both swaying and torsional motions with significant amplitudes have been observed on chromospheric spicules (De Pontieu et al., 2007, Okamoto et al., 2011, De Pontieu et al., 2012) . In addition, coordinated studies of SOT, EIS and SDO/AIA (De Pontieu et al., 2009, De Pontieu et al., 2011) suggest that spicules often disappear from chromospheric passbands because they are rapidly heated to TR and coronal temperatures. However, the detailed thermal evolution and wave propagation has been difficult to determine because of their rapid evolution on small spatial scales, and lack of coverage in transition region passbands. Coordinated observing with IRIS now provides excellent coverage in the upper chromosphere and transition region at high spatial, temporal and spectral resolution, which will allow us to address the energy budget, propagation and dissipation of Alfvenic waves, and the thermal evolution of spicules. These are crucial for a better theoretical understanding and/or modeling of these ubiquitous jets. request to SOT Ca II H at 4.8s cadence with exposure times long (~1.5s or more, but avoid saturation on the disk) and field-of-view as wide as possible, and including both disk and the off-limb regions (at least 25 arcsec off the limb should be visible at all times). For example, Program 0x3fd (or a modified version with 4.8 sec cadence) can be used with ROI 3 set to shift the FOV so it is centered on the limb: ROI shift 27 arcsec N or S for N or S polar pointing, 27 arcsec W for W limb pointing. ivo://sot.lmsal.com/VOEvent#2014-09-07T00:04:00Z