Table 4 Part 2: Details of the operations performed and conditions set during the quality check for Surface Temperature, Soil Temperature, and Soil Moisture.

1

Removal of common error values (e.g. -9999) and full NaN rows

Removal of common error values (e.g. -9999) and full NaN rows

Removal of common error values (e.g. -9999) and full NaN rows

2

N/A

N/A

Removal of negative values

3

Outlier flagging-evaluation: Flagging of values above or below 3 standard deviations of the preceding 7 and following 7 data points (rolling window = 15), and minimum 3 units above/below the average of the same preceding and following 7 values. This flagging is then followed by user inspection and an optional visual inspection of the dataset

Outlier flagging-evaluation: Flagging of values above or below 3 standard deviations of the preceding 7 and following 7 data points (rolling window = 15), and minimum 3 units above/below the average of the same preceding and following 7 values. This flagging is then followed by user inspection and an optional visual inspection of the dataset

Outlier flagging-evaluation: Flagging of values above or below 3 standard deviations of the preceding 7 and following 7 data points (rolling window = 15), and minimum 3 units above/below the average of the same preceding and following 7 values. This flagging is then followed by user inspection and an optional visual inspection of the dataset

4

N/A

N/A

N/A

5

Flagging and evaluation of instrument artifacts (jumps of  >5°C between measurement instances)

Flagging and evaluation of instrument artifacts (jumps of  >3°C between measurement instances)

Flagging and evaluation of instrument artifacts (jumps of >10 % between measurement instances)

Ref.

(Aguilar and Skrynk, 2021)⁵⁸

(Aguilar and Skrynk, 2021)⁵⁸

(Dorigo et al., 2013)⁵⁹