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Earth, Planets and Space
Fig. 8 | Earth, Planets and Space

Fig. 8

From: Improvements and validation of the IRI UP method under moderate, strong, and severe geomagnetic storms

Fig. 8

Q1, Q2, and cR time series for IG12eff, for selected storms and variogram models. Q1, Q2, and cR time series for a linear and b spherical variogram models for IG12eff corresponding to the severe geomagnetic storms listed in Table 3 as number 12 (left) and 27 (right). The continuous and dashed black lines in Q1 and Q2 plots represent the threshold values as highlighted at the top of the figure

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