Quality flags | Data QAQC levels
LUMA data products have been processed using several Quality Assurance/Quality control (QAQC) levels, with higher levels corresponding to more QAQC. The QAQC measures taken are outlined in the table below.

Instrument Description Data level Description Time resolution Base resolution
Vaisala WXT510 Automatic Weather Station L0 Raw data 5 s
1, 5, 15, 30 min
5 s
L1 Thresholds applied , align wind direction with BNG north 1, 5, 15, 30 min 5 s
L2 Gap fill by:
(a) linear interpolation if gap <= 2h
(b) data from alternative site (e.g. fill KSK with KSS), using correction for site specific differences.
(c) prediction based on day before and after if no data are available from alternative site
1, 5, 15, 30 min 5 s
CNR1/CNR4 Net Radiometer
Kipp & Zonen
L0 Raw data 15 min 15 min
L1 MT1 thresholds
Night time Kdn and Kup set to 0
15 min 15 min
L0 Raw data 15 min 15 min
Skye UVA (SKU 420)
UVB (SKU 430)
PAR (SKP215)
UVA (SKU 420)
UVB (SKU 430)
PAR (SKP215)
UVA (SKU 420)
UVB (SKU 430)
PAR (SKP215)
L0 Raw data 15 min 15 min
L1 MT1 thresholds 15 min 15 min
PSP Spectral Pyranometer L0 Raw data 15 min 15 min
L1 MT1 thresholds, night time Kdn set to 0 15 min 15 min
PIR Spectral Pyrgeometer L0 Raw data 15 min 15 min
L1 MT1 thresholds 15 min 15 min
SPN1 Sunshine Pyranometer L0 Raw data 15 min 15 min
L1 MT1 thresholds 15 min 15 min
Rain gauge ARG100 Campbell Scientific Rain Gauge L0 Raw data 15 min 15 min
L1 gap filled 15 min 15 min
Tinytag Water temperature logger L0 Raw data 1 min 1 min
Li7500 Li-Cor Biosciences Gas Analyser L0 Raw data 10 Hz 10 Hz
L0 Averages of L0 Raw data 30 min 10 Hz
L1 Raw data, including quality control 10 Hz 10 Hz
L1 Averages of L1 Raw data 30 min 10 Hz
L2 Raw data, including quality control and IMAS filter 10 Hz 10 Hz
L2 Averages of L2 Raw data 30 min 10 Hz
Li7500_ECpack Eddy Covariance data from Li7500 processed by ECpack software (van Dijk et al. 2001) and QAQC (Kotthaus and Grimmond 2012) L0 EC-processed fluxes based on L0 Raw data 30 min 10 Hz
L1 EC-processed fluxes based on L1 Raw data 30 min 10 Hz
L2 EC-processed fluxes based on L2 Raw data 30 min 10 Hz
CSAT3 Campbell Scientific Sonic anemometer L0 Raw data 10 Hz 10 Hz
L0 Averages of L0 Raw data 30 min 10 Hz
L1 Raw data, including quality control 10 Hz 10 Hz
L1 Averages of L1 Raw data 30 min 10 Hz
L2 Raw data, including quality control and IMAS filter 10 Hz 10 Hz
L2 Averages of L2 Raw data 30 min 10 Hz
CSAT3_ECpack Eddy Covariance data from CSAT3 processed by ECpack software (van Dijk et al. 2001) and QAQC (Kotthaus and Grimmond 2012) L0 EC-processed fluxes based on L0 Raw data 30 min 10 Hz
L1 EC-processed fluxes based on L1 Raw data 30 min 10 Hz
L2 EC-processed fluxes based on L2 Raw data 30 min 10 Hz
CL31_CLD Vaisala CL31 Ceilometer Cloud information and diagnostics L0 Raw data 15 s 15 s
L0 Averages of L0 Raw data 15 min 15 s
CL31_CLDW15
CL31_CLDW30
CL31_CLDW60
Processed CL31_CLD L1 Smoothed Raw data, cloud cover determined from cloud height over windows of 15, 30, 60min 15 s 15 s
L1 Averaged smoothed data, median cloud height and mean cloud cover 15 min 15 s
CL31_BSC Ceilometer, Vaisala
Backscatter profile
L0 Raw data 15 s 15 s
L0 Averages of L0 Raw data 15 min 15 s
CL31_BSA Aggregated backscatter profile from CL31_BSC L1 Median backscatter over vertical atmospheric layer of 1000-6000 m 15 s 15 s
CL31_BSP Processed backscatter profile from CL31_BSC L1 Statistics of backscatter over vertical atmospheric layers 15 s 15 s