STEREO Space Weather Group update Dave Webb ISR, Boston College and Air Force Research Laboratory STEREO SWG-20 27-29 October 2009 Meredith, NH.

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Presentation transcript:

STEREO Space Weather Group update Dave Webb ISR, Boston College and Air Force Research Laboratory STEREO SWG October 2009 Meredith, NH

DFW, ST SWG, Meredith, NH, Oct 09 Group leaders: Dave Webb & Doug Biesecker Website contains background on SWx, SWx-related meetings, PI SWx studies, tools/projects, references & links -Member list with addresses - Currently have ~120 members - Please provide updated addresses! - Contact me to join: - Can send your s via: (but please contact me first) Maintain a list of URLs/links that all PI teams can use - Recently added more STEREO CME/event catalog links - Feedback please! Maintain reference list of key SWx papers - Feedback please! Tools/Projects list - Feedback: Need updates from each team

DFW, ST SWG, Meredith, NH, Oct 09 Contains an event summary, online data, modeling & links to other data First two STEREO SWx event s were Dec & May 2007 Additional events added - Called Sun-STEREO Events. - Is a CME observed by SECCHI imagers on one or both S/C that later hits one of them (sometimes incl. L1/Earth) as detected in-situ. These form special class of SWx-type events that give us details on ICME propagation and internal structure characteristics. Need your feedback on these Event pages! - Incorporate or link to other STEREO data: Beacon (NRT quicklook) SECCHI & SWAVES imagery PLASTIC & IMPACT in-situ data Modeling/simulation results - Need more geo inputs! - Try to incorporate new events/pages soon after events occurrence - Need any missing events, new data links, revisions/corrections STEREO Space Weather Event Pages

More Updates STEREO Modeling link added for the NOAA SWPC website of plots of 1- to 7-day advanced solar wind speed predictions using the Wang-Sheeley-Arge (WSA) model for comparison with in-situ STEREO Beacon data: - Similar to the original WSA plots for L1-ACE, which also include predictions of the IMF and are linked here. - Thanks to Leslie Mayer and Nick Arge STEREO-B now at the L5 point, allowing us to use ST-B as a pathfinder for a possible SWx monitor mission. - View & study CMEs aimed Earthward, e.g., compare HI views with those from SMEI at Earth. - ST-B also views beyond Earth-facing east limb and can view activity-producing regions for forecasting. - Feature article submitted to SWx journal. Updates at SSC Beacon browse site (Bill Thompson): - Running diff HI-2 images/movies from the regular data stream. Shows sunward half of full HI-2 field. - Time-elongation plots ("J-plots") from COR-2 and HI-1 running differences: CMEs, streamers and other features can be tracked. - Heliographic, Earth-view synoptic maps from the latest SECCHI-A and –B EUVI beacon images; Demonstrate how much of Sun STEREOs now view!

DFW, ST SWG, Meredith, NH, Oct 09 NOAA SWPC Beacon Data: - NRT 6 hr. to 30 d. plots of data from in-situ instruments, PLASTIC & IMPACT: Measurements of solar wind plasma, particles, magnetic field & SEPs. - Each plot title has the corotation time a structure at ST-B will take to arrive at L1 (ACE - or L1 to STEREO-A). Based on calculated ST-B/L1 spacecraft angular and radial separations for most recent wind speed observed at ST-B. More Updates Thank you!

DFW, ST SWG, Meredith, NH, Oct 09 SPACE WEATHER TOOLS General:  Geometric Localization of STEREO CMEs (V. Pizzo & D. Biesecker, 2004; NOAA)  WSA Model Predictions (N. Arge, J. Luhmann, D. Biesecker; AFRL, UCB, NOAA; Arge & Pizzo, 2000) Leslie Mayer work, SWPC, incorporating STEREO locations into the WSA model. Will resemble standard output at: but w/ ST A & B addedhttp:// CME Detection:  CACTUS – Computer Aided CME Tracking (E. Robbrecht & D. Berghmans, 2005; ROB) Latest COR2 runs at  SEEDS – Solar Eruptive Event Detection System (J. Zhang et al.,; GMU) Being tested/used on LASCO & SECCHI CMEs: On-board Automatic CME Detection Algorithm (E. De Jong, P. Liewer, J. Hall, J. Lorre & R. Howard) ; JPL, NRLNot implemented? CME-Related Features Detection:  Computer Aided EUVI Wave and Dimming Detection (O. Podladchikova, D. Berghmans, A. Zhukov; ROB; Podladchikova & Berghmans, 2005) Tested on SOHO EIT images: SECCHI soon? Velocity Map Construction (J. Hochedez, S. Gissot; ROB)