aurora parameterization in the tie-gcm...
TRANSCRIPT
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Aurora Parameterization in the
TIE-GCM Model
Rachel Miller
Mentors: Barbara Emery, Xioali Luan
HAO
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Kp Index and Hemispheric Power (HP)
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Data from GUVI:
Global Ultraviolet Imager
• Data from 2002-2007
• Average of Northern and
Southern hemisphere over
all seasons
• Binned with a resolution of
0.5° MLAT and 30 min MLT
as a function of Kp index
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Thermosphere Ionosphere Electrodynamics
General Circulation Model (TIE-GCM)
Auroral Input: Kp index
Resolution: 5° GLAT x 20 min LT
Auroral Models:
Energy Flux Half Electron Mean Energy
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Plotting the TIE-GCM Model in
GUVI Coordinates
Auroral Input: Kp index
Resolution: 1° MLAT x 30 min LT
Auroral Models:
Energy Flux Electron Mean Energy
20
18
16
14
12
10
8
6
4
2
0
Kp = 711
10
9
8
7
6
5
4
3keV
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Energy Flux of the Aurora
Data from GUVI TIE-GCM Current Model
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TIE-GCM Aurora Parameters
• Radius of the auroral oval
• Center of the auroral oval
• Maximum energy flux
on the midnight side
and the noon side
• Angular offset of the
auroral oval
• Half-width of the aurora
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Energy Flux of the Aurora
Data from GUVI TIE-GCM with New
Parameters
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Electron Mean Energy
Data from GUVI TIE-GCM Current Model
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Electron Mean Energy
Data from GUVI TIE-GCM with New
Parameters
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TIE-GCM in Geographic Coordinates
with New Parameters
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Seasonal Variation: Energy Flux
GUVI: Summer GUVI: Winter
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Summer
Summer
Summer
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Seasonal Variation: Energy Flux
TIE-GCM: Summer TIE-GCM: Winter
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Seasonal Variation: Mean Energy
GUVI: Summer GUVI: Winter