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magnetic latitude[mag′ned·ik ′lad·ə‚tüd]
the angle ψ, determined from the equations tan ψ = (1/2) tan J, where J is the magnetic inclination (or magnetic dip). Magnetic latitude ranges from 0°, at the magnetic equator, to 90°, at the north and, correspondingly, south magnetic poles. The concept of magnetic latitude is used in all research involving the study of the physics of the magnetosphere, in particular, in the analysis of geophysical phenomena at magnetically conjugate points on the earth’s surface (points lying on one line of force of the geomagnetic field).