Table of Contents ====================================================================== 1. 2014 WORKSHOP REPORT: The Scientific Magnetic Mapping and Techniques Focus Group 2. MEETING: Triennial Earth-Sun Summit (TESS) April 26-May 1, 2015, Indianapolis 3. SESSION: Geospace Session at ISAR-4 April 27-30, 2015, Toyama, Japan 4. JOB OPENING: Research Geophysicist Position, USGS Geomagnetism Program ====================================================================== *************************** ** THE GEM MESSENGER ** *************************** Volume 24, Number 35 October 29, 2014 ---------------------------------------------------------------------- 1. 2014 WORKSHOP REPORT: The Scientific Magnetic Mapping and Techniques Focus Group ---------------------------------------------------------------------- From: Elizabeth MacDonald , Eric Donovan , and Robyn Millan The Scientific Magnetic Mapping and Techniques group held three sessions at the GEM meeting in Portsmouth, Virginia. The topics covered in the three sessions focused on an open-closed boundary challenge (focusing on Nov. 14, 2012 storm), tail mapping techniques, and a joint session with the metrics and validation focus group. Talks have been archived on the Wiki: http://bit.ly/gem_mapping. For the first session Liz MacDonald offered an overview of the Nov. 14th event with boundary observations from the RBSP spacecraft and LANL-GEO as well as BATSRUS model run predicting the open-closed boundary. Joo Hwang offered additional conjunctions and a more global view from GOES, THEMIS, and GEOTAIL. She also offered an alternate explanation for the dropout features. Grant Stephens presented on the topic of the TS07D magnetic field model, its derivation, comparison to earlier models, and utility for the inner magnetosphere. Misha Sitnov showed further evaluation of TS07D for the Nov 14, 2012 event. Kevin Urban presented work with the AGO data testing of auroral boundaries, in particular focusing on a proxy for the open-closed boundary derived from ground-based magnetometer data. Shasha Zou also presented an assessment of a technique using SuperDARN spectral width boundaries in predicting the OCB for Nov. 14. This showed a promising comparison to the in situ data for the northern hemisphere. She also discussed the effect of IMF By as seen in different modeling runs. In the second session, a variety of mapping techniques and challenges were discussed. E. Donovan presented optical observations, focusing on images taken at 630 nm (Oxygen "redline"), from which one can sometimes infer the ionospheric signature of the open-closed boundary. He suggested a study using redline images from Rankin Inlet Canada, and magnetometer time series from the "Churchill Line" to test the efficacy of Urban's proxy for the OCB (see above). Chao Yue presented for Jun Liang on the topic of using energy-latitude dispersion of ion precipitation to test the accuracy of geomagnetic models, especially comparison to an event-adaptive model approach. Bea Gallardo-Lacourt presented an analysis of ionospheric flow structures associated with beading at substorm auroral onset and how they map to fast moving structures in the tail. Ted Fritz presented an analysis of energetic ion pitch angle distributions and magnetopause mappings focusing on two types of butterfly pitch angle distributions and showing supporting single particle ray tracing for distinct source mechanisms. Dmitri Kandrashov presented a reconstruction of large gaps in solar wind parameters for empirical magnetic field modeling using a single spectrum analysis technique. In the last joint session, there were technical talks and extensive discussion on how to quantify mapping metrics. Chao Yue showed empirical modeling of the 3D force-balanced pressure and magnetic field structure during substorm growth phase. She applies this analysis to magnetic field mapping of the ion isotropic boundary and proton aurora. Jo Baker for Simon Shepard presented problems with ACGM Coordinates. The CCMC presentation by Rastaetter focussed primarily on the use of CCMC empirical model implementations to carry out magnetic field mappings for individual events and for "batches" of large numbers of events. In the wrap-up discussion, the conveners and other attendees agreed on a number of key points moving forward. For one example, it is clearly important for collective ability to "map" between the ionosphere and magnetosphere in general and in specific cases that we have a much better understanding of the validity of a number of physical proxies we use in this regard. How reliable are proxies of the OCB and ionospheric signature of the equatorward boundary derived from auroral "redline" boundaries? Does improving "fit" of models to B-field observations at a few disparate locations in the magnetosphere improve mapping with event-specific empirical models? What are the best (in terms of resultant mappings) ways of fitting empirical models to large data sets (see Sitnov, Yue, Liang, Birn, etc)? How can the ability to serve "batch" requests for large numbers of mappings with a wide range of models be optimized and assessed? Ultimately, how can we test mapping capabilities in general given that we cannot "see" or directly observe magnetic field lines? ---------------------------------------------------------------------- 2. MEETING: Triennial Earth-Sun Summit (TESS) April 26-May 1, 2015, Indianapolis ---------------------------------------------------------------------- From: Jim Klimchuk Mark your calendars for the Triennial Earth-Sun Summit next April. Think of TESS as an improved version of the old Spring AGU meetings. It's just us (the SPA community), so no getting lost in the crowd, and it places greater emphasis on inter-disciplinary interactions, both in the formal science sessions and the informal social events. Check out the website athttp://aas.org/meetings/tess2015, where you will find the following meeting description. The Triennial Earth-Sun Summit (TESS) is a joint meeting of the Space Physics and Aeronomy Section of the American Geophysical Union and the Solar Physics Division of the American Astronomical Society. The inaugural meeting will take place 26 April-1 May, 2015 in Indianapolis. TESS is intended to be a gathering of the entire Heliophysics community, including the four traditional sub-disciplines devoted to studies of the Sun, heliosphere, magnetosphere, and ionosphere- thermosphere-mesosphere. The overarching goal is to promote greater interaction and unity within this community. The meeting site has been selected to provide an excellent environment for this to occur, and the scientific and social programs are being designed with this goal in mind. In particular, the scientific program will include plenary talks covering each of the sub-disciplines, as well as inter- disciplinary and discipline-specific sessions with invited and contributed talks and posters. Some sessions will be led by organizers selected by the Scientific Organizing Committee (“AGU style”), while others will be created by the SOC after the abstracts have been submitted (“SPD style”). Further information can be found at http://aas.org/meetings/tess2015 or by contacting Co-Chairs Jim Klimchuk (James.A.Klimchuk@nasa.gov) and Dana Longcope (dana@physics.montana.edu). We invite you to join us for this exciting inaugural event! ---------------------------------------------------------------------- 3. SESSION: Geospace Session at ISAR-4 April 27-30, 2015, Toyama, Japan ---------------------------------------------------------------------- From: Yoshizumi Miyoshi The session A4 'Geospace over and related to the Arctic region' at ISAR-4 (International Symposium on Arctic Research-4) to be held on April 27-30, 2015 at Toyama, Japan, as a part of ASSW (the Arctic Science Summit Week) 2015. Description of the session is as follows: A4: Geospace over and related to the Arctic region Geospace is the atmosphere/space near the earth, including middle atmosphere, upper atmosphere, thermosphere, ionosphere and magnetosphere. In the Arctic region, human lives and social infrastructures are sensitively affected by the change of geospace disturbed by solar activities. Also the Arctic geospace is now known to be coupled to the global atmosphere through atmospheric dynamical processes including circulation and waves. This proposed session is devoted to a forum to discuss recent progress on geospace studies in the Arctic region, such as ground-based/space-borne observations, theories and modeling. Contributions from international collaborative researches are highly encouraged. Deadline of the abstract submission is November 10, 2014. For more details, please visit http://isar-4.jp For your information, Toyama, the symposium venue, is known as the best seafood place in Japan. Session proposer and conveners: Takuji Nakamura (National Institute of Polar Research, Japan), Ryuho Kataoka (National Institute of Polar Research, Japan), Yoshizumi Miyoshi (STEL, Nagoya University, Japan), Craig Heinselman (EISCAT Headquarters), Esa Turunen (SGO, Finland), Yasunobu Ogawa (National Institute of Polar Research, Japan) ---------------------------------------------------------------------- 4. JOB OPENING: Research Geophysicist Position, USGS Geomagnetism Program ---------------------------------------------------------------------- From: Jeffrey Love The USGS Geomagnetism Program (geomag.usgs.gov) invites applications from the communities of geomagnetism, magnetotellurics, and space physics, for permanent full-time research geophysicist (GS-1313-12, $74,587-$96,960/year + benefits). Duties will include (1) conducting scientific research in geomagnetism and space physics as it relates to the solid earth, ionosphere, and/or magnetosphere, (2) analysis of geomagnetic variability as recorded by ground-based magnetic observatories, (3) studies of geomagnetic and space-weather hazards, and development of real-time web-based tools for display and analysis of conditions that document and describe these hazards. The duty station is Golden, Colorado. Applications will be accepted from Oct 27, 2014 - Nov 10, 2014. Applicants must be U.S. citizens. Current or former Federal employees should apply to vacancy announcement PAC-2015-0018 on USAJOBS. Applicants from the general public should apply to vacancy announcement PAC-2015-0019 on USAJOBS. Questions can be directed to Jeffrey J. Love (jlove@usgs.gov, 303-273- 8540) or Carol A. Finn (cafinn@usgs.gov, 303-273-8475). +-------------------------------------------------------------------+ | To broadcast announcements to the GEM community, please contact | | Peter Chi, GEM Communications Coordinator, at: | | | | | | Please submit your announcements in plain text or Word document. | | | | To subscribe the GEM Messenger, send an e-mail to | | | | with the following command in the body of your e-mail message: | | subscribe gem | | To remove yourself from the mailing list, the command is: | | unsubscribe gem | | | | GEM Messenger is also posted online via newsfeed at | | http://heliophysics.blogspot.com and | | http://www.facebook.com/heliophysics | | | | Back issues are available at: | | http://www-ssc.igpp.ucla.edu/gemwiki/messenger/ | | | | URL of GEM Home Page: http://aten.igpp.ucla.edu/gemwiki | | Workshop Information: http://www.cpe.vt.edu/gem/index.html | +-------------------------------------------------------------------+