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Table 1 Contrasting versions of automated forward modeling and global EM solvers

From: Inverting magnetic meridian data using nonlinear optimization

Method

AGM

ARM

AMM

KRM/AMIE

Scope

Global

Regional

Local

Global

Resolution

Medium

Medium

High

Low

Weighting

Colatitude

Auroral/subauroral

Uniform

n/a

Constraint

Join Current Systems

None

Constant latitude

n/a

Initial model

Critical

Flexible

Robust

n/a

Data input

Global dB

Regional dB

dB X , dB Z

Global dB

Reference

Connors (1998)

Connors et al. (2014)

This paper

Ahn et al. (1995), Richmond (1992)