Slide 11 week in France
Most people were lightning/sprite modelers but interested in the broad impact of GEC
I presented on the 3D modeling efforts, including conductivity, sources and numerical solvers
Model Development
Mesh is icosahedral
Steady state system
Dirichlet BCs (Fixed Potentials)
Nov 17UT
Summary
People interested in global implications of their work, and the broader picture
Modeling local E-fields for different sites around globe is of great interest
Collaborations on data/modeling of E-fields from different sites around globe
E-field Motivation
Carnegie ship sailed in the 1920’s & 1930’s, people have gotten similar qualitative agreement
Can we utilize stations around the globe to get a more quantitative understanding of the Carnegie Curve
How are the E-field measurements influenced by local disturbances?
A larger database will remove these factors
Parkinson and Torrenson, 1931
Whipple and Scrase, 1936
area
Electric field measured on wooden ship, away from storms, follows global distribution of thunderstorms in UT.
Thunderstorms are the global driver of the electric circuit.
Carnegie Curve
Instrumentation Questions
Local Variations
Ionospheric Potential Mapping
Park 1976
Park demonstrated the mapping of ionospheric potentials at polar latitudes for generalized cases.
The new numeric models allow us to analyze more realistic potential and conductivity disturbances seen in Ellen’s SuperDARN data
Future 3D Modeling
Use FEM code for regional modeling, and mapping solar wind influences to the atmosphere
Ionospheric potential scale sizes
Conductivity disturbances
Use RBF model for generating Carnegie curves at locations around the globe
Compare seasonal variability and influences of GCR/conductivity variability on global scale
Paper outline started, need model!