2013 Workshop:Geospace system science
Geospace system science during storms and substorms
Location, Date/Time and Duration
4 hours, Monday 24 June, 130-330PM and 4-6PM in the Flagstaff section of the Ballroom in the Millennium Hotel
Altitudes: IT - Latitudes: global - Inst/Model: radar - Other: all kinds of observations, modeling, theory, and data assimilation
Format of the Workshop
Requested Specific Days
Monday. This would encourage the participation of those people attending the joint GEM-CEDAR weekend workshop.
Special technology requests
Our CEDAR Science Challenge is to develop an improved understanding of the geospace system response to storms and substorms. We seek to identify and investigate the underlying coupling processes and large-scale interactions between the magnetosphere and the ionosphere-thermosphere (the M-I-T system) at middle and high latitudes.
Our session goal is very well aligned with one of the science goals for the next decade identified in the 2012 Decadal Survey for Solar and Space Physics from the National Academy of Sciences: "Determine the dynamics and coupling of Earth’s magnetosphere, ionosphere, and atmosphere and their response to solar and terrestrial inputs".
The advantage of the "systems perspective" in addressing the coupled M-I-T system is identified in the "CEDAR The New Dimension, Strategic Vision": "The intellectual framework of the system view enables transferable concepts across systems and disciplines to advance and facilitate progress in understanding our whole Sun-Earth system".
Main science topics include:
(1) Energy flow in the disturbed M-I-T system: what are the prime characteristics and relationships during storm-time processes promoting energy flow and exchange between the magnetosphere and the I-T system?,
(2) How do energetic particle precipitations (EPPs) affect the energy distribution, chemistry and transport of the upper/middle atmosphere?,
(3) What are the effects of EPPs on ionospheric structure, atmospheric heating, the formation of irregularities, and the generation of atmospheric gravity waves?,
(4) How do shielding processes in the inner magnetosphere and current feedback mechanisms between the magnetosphere and ionosphere impact ionospheric electrodynamics (e.g. subauroral electric fields – SAPS) and mesoscale ionospheric plasma and temperature structure (e.g. storm enhanced densities – SEDs)?,
(5) What are the controlling influences on field aligned mass coupling and flows linking the plasmasphere and ionosphere?
The above questions will be addressed by emphasizing participant discussions which bring new views of the M-I-T system made available by expanded observation capabilities available from various ground-/space-based measurements. Furthermore, we will encourage participants to combine and synthesize resources from observations, modeling, theory, and data assimilation. We invite short, workshop style presentations with ample time allocated for discussion. We particularly welcome “big picture” (or system level) perspectives that motivate science questions and their relevance to the understanding of coupling processes within the magnetosphere-ionosphere-thermosphere.
We envision this workshop as part of a multi-year series with steady progress on specific questions within the main topics. Identification of these questions during discussion is an expected and ongoing outcome of workshop activities. We encourage proposals for how these specific science questions can be addressed using various modern and historical resources, and we expect our activities to motivate new cross-disciplinary collaborations and new observational capabilities. To facilitate these aims, we will allocate time within the workshop for discussion of metrics and quantification of progress on identified science topics.
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