From: Evaluation of candidate geomagnetic field models for IGRF-12
DGRF candidate models for main field epoch 2010 | ||||
---|---|---|---|---|
Team | Model | Organization | Data | Comments (parent model etc.) |
A | DGRF-2010-A | BGS | Ørsted; CHAMP; Swarm A, B, C; | Based on parent model using order 6 B-splines |
Observatory hourly means | with 1 year knot spacing | |||
B | DGRF-2010-B | DTU Space | Ørsted; CHAMP; SAC-C; Swarm A, B, C; | Based on CHAOS-5 |
Observatory monthly means | using order 6 splines with 6 months spacing | |||
C | DGRF-2010 | ISTerre | Ørsted; SAC-C; CHAMP; Swarm B | Based on COV-OBS.x1 |
observatory monthly mean | using order 4 B-splines with 2 year spacing | |||
D | DGRF-2010-D | IZMIRAN | CHAMP 2009.0-2010.75 | Spherical Harmonics for each day |
no data selection but numerical filtering | then linear regression centered on 2010.0 | |||
E | DGRF-2010-E | NGDC-NOAA | CHAMP | Based on parent model using quadratic expansion |
F | DGRF-2010-F | GFZ | CHAMP from 2009.0 to 2011.0 | Based on parent model using order 6 B-splines |
USTHB/EOST | observatory hourly means | with 6 month spacing | ||
G | DGRF-2010-G | NASA/GSFC | Ørsted; CHAMP; SAC-C | Based on CM5 |
observatory hourly means | using order 5 B-splines with 6 month spacing |