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Table 3 Differences in trend with respect to dual-frequency altimetry data

From: Comparison of different methods to account for the plasmaspheric electron content in GNSS-derived ionospheric altimeter corrections and their impact on sea level trend estimation

Solution

Scaling type

Trend differences [mm/year]

Std of differences [mm]

0

Unscaled

\(1.095 \pm 0.045\)

2.7

1

NeQuick VTEC

\(0.677 \pm 0.033\)

1.7

2

IRI ratio

\(0.297 \pm 0.034\)

1.3

3

NeQuick ratio

\(0.362 \pm 0.025\)

1.1

4

Const

\(-0.082 \pm 0.028\)

0.9

5

Const J1

\(0.096 \pm 0.025\)

0.8

6

ML

\(-0.275 \pm 0.033\)

1.2