2016 Workshop:High Latitude Geospace System

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Grand Challenge: The High-Latitude Geospace System

Location, Date/Time and Duration

Monday 13:30-15:30, 16:00-18:00

Conveners (First is primary convener and the rest are co-conveners)

Joshua Semeter
Cheryl Huang
Yanshi Huang
Matthew Zettergren

Format of the Workshop

Schedule of presenters:

Session 1 (13:30-15:30):
Joshua Semeter (session overview, high-latitude reconnection and small-scale convection cells)
Toshi Nishimura (polar cap precipitation and interpretation)
Ying Zou (SWARM observations of polar FACs)
Seebany Datta-Barua (Lagrangian coherent structures)
Robert Gillies (RISR-C / PolarDARN / SWARM / Imager comparisons)
Roger Varney (topside experiments with RISR-N and RISR-C)
Elizabeth Macdonald (Aurorasaurus science)

Session 2 (16:00-18:00):
Ildiko Horvath (stormtime flows, presented by Cheryl Huang)
Yanshi Huang (Conjugate DMSP-ESR observations of ion temperature in the polar region)
Ryan Mcgranaghan (ionospheric variability and AIMIE-2)
Matthew Zettergren (Mesoscale density structures and grad-drift instability)
Hassan Akbari (Ionospheric destabilization: drivers and consequences)
Manbharat Singh Dhadly (ion-neutral interactions and climatology)
Robert Clauer (polar cap potential saturation)

Estimated attendance

50

Justification for the workshop

The magnetosphere, ionosphere, and thermosphere respond as a coherently integrated system to variations in the solar wind. This ‘system science’ paradigm is well recognized as the path forward for advancing space weather predictive capabilities, as embraced by the CEDAR Strategic Plan and the NRC Decadal Survey. Nowhere is the systems approach more important than at high geomagnetic latitudes, where solar wind power enters the geospace system through a cascade of interacting multi-scale processes.

Recent years have witnessed a rapid expansion of instruments and networks deployed to the geomagnetic polar regions. These measurements are being supported by an increasingly sophisticated suite of models (assimilative, empirical, first-principles) and conjugate observations from new and legacy orbital platforms (ePOP, SWARM, DMSP, Cubesats). Efforts to reconcile ground- and space-based perspectives have called into question our understanding of four key areas: (1) electromagnetic energy input and transfer in the geomagnetic polar regions, (2) sources and impacts of instabilities and turbulence on the high-latitude I-T system, (3) affects of extreme gradients on electrodynamic coupling with the polar magnetosphere, and (4) sources and mechanisms of high-latitude plasma escape. The purpose of this grand-challenge workshop is to provide a forum for the community of investigators addressing these and related processes in Earth’s open geomagnetic field region from disparate perspectives.

Requested Specific Days

We request two 2-hour sessions on a joint day (preferable Monday, due to plenary tutorial topic).

Special technology requests

Description

This workshop provides a forum for the community of investigators studying geospace system dynamics in Earth’s geomagnetic polar regions. Contributions are welcome in the form of brief focused presentations. Of particular interest are investigations combining ground-based and space-based perspectives, and/or attempts to synthesize diverse measurements through physical, statistical, and empirical modeling. The sessions will include time for open discussion assessing progress and discussing future directions.

Workshop Agenda

The session format will consist of clusters of short presentations interspersed with open discussion. Please email the conveners if you have a brief topic or result you’d like to share. Current discussion leaders (tentative):

Session 1:

1. Joshua Semeter (session overview, PMAFs and small-scale convection cells)

2. Toshi Nishimura (polar cap precipitation and interpretation)

3. Seebany Datta-Barua (Lagrangian coherent structures)

4. Robert Gillies (RISR-C / PolarDARN / SWARM / Imager comparisons)

5. Roger Varney (topside experiments with RISR-N and RISR-C)

6. Hassan Akbari (Ionospheric destabilization: drivers and consequences)

Session 2:

1. Ildiko Horvath (stormtime flows, presented by Cheryl Huang)

2. Yanshi Huang (DMSP-ESR conjugate studies of plasma state)

3. Ryan Mcgranaghan (ionospheric variability and AIMIE-2)

4. Matthew Zettergren (Mesoscale density structures and grad-drift instability)

5. Ying Zou (SWARM observations of polar FACs)

6. Manbharat Singh Dhadly (ion-neutral interactions and climatology)

Workshop Summary

This is where the final summary workshop report will be.

Presentation Resources

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