Table 1 Cloud fraction (%) of the raw NDSI datasets and after implementation of each gap filling step, both for the entire dataset and by season.
From: A 37 years [1984–2021] Landsat/Sentinel-2 derived snow cover time-series for Switzerland
Raw data | Step1 | Step2 | Step3 | Step4 | Step5 | Step6 | Step7 | Total | |
|---|---|---|---|---|---|---|---|---|---|
Fraction of cloud (%) | 57.9 | 40.0 | 36.0 | 35.9 | 33.5 | 30.2 | 29.8 | 29.6 | −48.9 |
Fraction of cloud (%) by season | |||||||||
DJF | 59.0 | 47.0 | 43.0 | 42.9 | 42.4 | 40.8 | 39.7 | 39.4 | −33.2 |
MAM | 57.7 | 40.5 | 36.1 | 36.0 | 34.2 | 31.1 | 30.7 | 30.4 | −47.3 |
JJA | 54.6 | 31.5 | 28.6 | 28.6 | 23.1 | 17.8 | 17.7 | 17.7 | −67.7 |
SON | 61.3 | 41.1 | 36.4 | 36.4 | 34.5 | 31.5 | 31.2 | 31.0 | −49.4 |
Performance of each step (%) | — | 63 | 14 | 0 | 9 | 11 | 2 | 1 | 100 |
Performance of each step (%) by season | |||||||||
DJF | — | 61 | 20 | 0 | 2 | 8 | 6 | 1 | 100 |
MAM | — | 63 | 16 | 0 | 7 | 11 | 2 | 1 | 100 |
JJA | — | 63 | 8 | 0 | 15 | 14 | 0 | 0 | 100 |
SON | — | 67 | 16 | 0 | 6 | 10 | 1 | 0 | 100 |
