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Variable:
Geomagnetic field
Definition
Full name
Geomagnetic field
Definition
Magnitude and direction of the 3D magnetic field on the surface of Earth and within the magnetosphere (i.e., in low-Earth orbit and in geosynchronous orbit).
Measuring Units
nanoTesla (nT)
Uncertainty Units
nanoTesla (nT)
Horizontal Res Units
km
Vertical Res Units
Stability Units
nanoTesla (nT) (Stability /decade)
Comment:
Besides the determination of the International Geomagnetic Reference Field (IGRF), among other models, which has many applications, geomagnetic field measurements are useful in Space Weather, at high temporal sampling, to detect geomagnetic disturbances within the magnetosphere. The reference frame is Cartesian or Cylindrical with many different orientations. Ground measurements have Bx, By and Bz as Cartesian magnetic field components oriented to geographical North, East and local Nadir, respectively. H, D and Z are also used as Cylindrical components with H oriented horizontally, D (declination) measuring the angle in relation to the local
magnetic meridian and Z pointed to local Nadir.
Last modified:
2014-11-28
Applied in OSCAR/Space Gap Analysis:
Yes
Classification
Domain: Terrestrial
Sub-domain: Solid Earth and magnetic field
Variable: Geomagnetic field
Used in Application Areas:
Requirements defined for Geomagnetic field (3)
This tables shows all related requirements. For more
operations/filtering, please consult the full list of
Requirements Note: In reading the values, goal is marked blue , breakthrough green
and threshold orange
Id
Variable
Layer
App Area
Uncertainty
Stability / decade
Hor Res
Ver Res
Obs Cyc
Timeliness
Coverage
Conf Level
Val Date
Source
612
Geomagnetic field
Land surface
Space Weather
0.1 nanoTesla (nT) 0.3 nanoTesla (nT) 1 nanoTesla (nT)
100 km 200 km 500 km
1 sec10 sec10 sec
60 sec10 min60 min
Global
tentative
2011-05-01
ICTSW-1
613
Geomagnetic field
Geo
Space Weather
0.1 nanoTesla (nT) 0.3 nanoTesla (nT) 1 nanoTesla (nT)
26420 km 66000 km 264200 km
1 sec10 sec10 sec
60 sec5 min10 min
Global
tentative
2011-05-01
ICTSW-1
614
Geomagnetic field
Leo
Space Weather
0.1 nanoTesla (nT) 0.3 nanoTesla (nT) 1 nanoTesla (nT)
1 km 10 km 100 km
1 sec5 sec10 sec
60 sec60 sec10 min
Global
tentative
2011-05-01
ICTSW-1