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Last Updated: 04/05/2022

GEM 2009 Baseline Model Comparison

About

The 2009 GEM Baseline Model Comparison was designed to measure the response of magnetospheric models to increasingly negative solar wind Bz levels. No observation data are being used in this study. The study consisted of an 8-hour and an12-hour simulation run for each model.

Outputs are the modeled cross-polarcap potential in the ionosphere (CPCP) and the magnetopause standoff distance measured as the position of the open-closed magnetic field boundary at the subsolar point (mpnose).

The solar wind input is artificial:
N=5/cm^2, T=100000 K, Vx=-400 km/s, Vy=Vz=0 km/s, Bx==By=0 nT were held constant

whereas Bz (in nT) varied as follows:
-5 for 0:00 h < t <=2h
-10 for 2:10 h < t <= 4 h
-20 for 4:10 h < t <= 6 h
-30 for 6:10 h < t <= 8 h
-40 for 8:10 h < t <= 10 h
-50 for >= 10:10 h

IMF input data (year month day hour minute sec ms Bx B y Bz Vx Vy Vz N T):
2000 1 1 0 0 0 0 0.00 0.00 -5.00 -400.00 0.00 0.00 5.00 100000.00
2000 1 1 2 0 0 0 0.00 0.00 -5.00 -400.00 0.00 0.00 5.00 100000.00
2000 1 1 2 10 0 0 0.00 0.00 -10.00 -400.00 0.00 0.00 5.00 100000.00
2000 1 1 4 0 0 0 0.00 0.00 -10.00 -400.00 0.00 0.00 5.00 100000.00
2000 1 1 4 10 0 0 0.00 0.00 -20.00 -400.00 0.00 0.00 5.00 100000.00
2000 1 1 6 0 0 0 0.00 0.00 -20.00 -400.00 0.00 0.00 5.00 100000.00
2000 1 1 6 10 0 0 0.00 0.00 -30.00 -400.00 0.00 0.00 5.00 100000.00
2000 1 1 8 0 0 0 0.00 0.00 -30.00 -400.00 0.00 0.00 5.00 100000.00
2000 1 1 8 10 0 0 0.00 0.00 -40.00 -400.00 0.00 0.00 5.00 100000.00
2000 1 1 10 0 0 0 0.00 0.00 -40.00 -400.00 0.00 0.00 5.00 100000.00
2000 1 1 10 10 0 0 0.00 0.00 -50.00 -400.00 0.00 0.00 5.00 100000.00
2000 1 1 12 0 0 0 0.00 0.00 -50.00 -400.00 0.00 0.00 5.00 100000.00

8-hour runs were performed with the solar wind fed in at X=33 R_E upstream boundary (OpenGGCM, SWMF, LFM).
12-hour runs were possible with the upstream boundary at at X=60 R_E (OpenGGCM, SWMF).

Simulation Runs for the study performed at the CCMC

Run NumberKey WordsModelModel VersionEvent DateStart TimeEnd TimeGridValidation LevelCoordinate System for InputCoordinate System for OutputDipole Tilt (in the X-Z Plane) at Start DegDipole Tilt in Y-Z GSE Plane) degUpdate Dipole Orientation with TimeInflow Boundary (IB) REF10.7Conductance ModelCorotation
GEM2009_MODELCHALLENGE_060809_1GEM 2009 Modeling ChallengeBATSRUSv8.01Model2000/01/01 00:002000/01/01 12:00700K cells0GSMGSM0.000.00no33150.00000uniform(p=5,h=0)no
GEM2009_MODELCHALLENGE_060809_1aGEM 2009 Modeling ChallengeBATSRUSv8.01Model2000/01/01 00:002000/01/01 12:00700K cells0GSMGSM0.000.00no60150.00000uniform(p=5,h=0)no
GEM2009_MODELCHALLENGE_060809_2GEM 2009 Modeling ChallengeBATSRUSv8.01Model2000/01/01 00:002000/01/01 12:002M cells0GSMGSM0.000.00no33150.00000uniform(p=5,h=0)no
GEM2009_MODELCHALLENGE_060809_2aGEM 2009 Modeling ChallengeBATSRUSv8.01Model2000/01/01 00:002000/01/01 12:002M cells0GSMGSM0.000.00no33150.00000uniform(p=5,h=0)no
GEM2009_MODELCHALLENGE_060809_3GEM 2009 Modeling ChallengeBATSRUS with RCMv8.01Model2000/01/01 00:002000/01/01 12:002M cells0GSMGSM0.000.00no33150.00000uniform(p=5,h=0)no
GEM2009_MODELCHALLENGE_060809_4GEM 2009 Modeling ChallengeGUMICS4-HC-1.11Model2000/01/01 00:002000/01/01 12:00--0GSMGSE0.000.00no33150.00000uniform(p=5,h=0)no
GEM2009_MODELCHALLENGE_060809_4aGEM 2009 Modeling ChallengeGUMICS4-HC-1.11Model2000/01/01 00:002000/01/01 12:00--0GSMGSE0.000.00no60150.00000uniform(p=5,h=0)no
GEM2009_MODELCHALLENGE_061109_1GEM 2009 Modeling ChallengeOpenGGCM3.1Model2000/01/01 00:002000/01/01 12:00--0GSMGSE0.000.00no24150.00000uniform(p=5,h=0)no
GEM2009_MODELCHALLENGE_061109_2GEM 2009 Modeling ChallengeOpenGGCM3.1Model2000/01/01 00:002000/01/01 12:00--0GSMGSE0.000.00no24150.00000uniform(p=5,h=0)no
GEM2009_MODELCHALLENGE_061109_3GEM 2009 Modeling ChallengeOpenGGCM3.1Model2000/01/01 00:002000/01/01 12:00--0GSMGSE0.000.00no24150.00000uniform(p=5,h=0)no
GEM2009_MODELCHALLENGE_061109_42009 GEM modeling challengeOpenGGCM3.1Model2000/01/01 00:002000/01/01 12:00--0GSMGSE0.000.00no24150.00000uniform(p=5,h=0)no
GEM2009_MODELCHALLENGE_061410_1GEM2009 ModelChallenge 12 hour runLFM1.0.4Model2000/01/01 00:002000/01/01 12:0053x48x640GSMSM0.000.00yes30150.00000uniform(p5h0)yes