Tsyganenko coefficients

Dictionary: tsyganenko_params · Class: TsyganenkoParams

Used by: all functions (ignored if serverdata/livedata supply these instead)

The G1–G3 and W1–W6 driving coefficients used by the newer Tsyganenko external field models (TSY01 storm, TSY04, and later).

Defaults are quiet-time values: the median of each input over OMNI data from 1996 to 2025 when Kp ≤ 1. OTSO uses them for any key you leave out, unless serverdata or livedata is on. See Default space weather conditions.

Key	Type	Default	Description
G1	float	0.38	Tsyganenko G1 coefficient (TSY01/TSY01S).
G2	float	0.12	Tsyganenko G2 coefficient (TSY01).
G3	float	0.47	Tsyganenko G3 coefficient (TSY01S).
W1–W6	float	0.07, 0.06, 0.13, 0.03, 0.05, 0.08	Tsyganenko W1–W6 coefficients (TSY04) — cumulative solar wind forcing terms.