DQRID : D170328.6
Start DateStart TimeEnd DateEnd Time Data Quality Metric
01/19/1996000006/01/20162359Does not affect quality
more
Subject:
SGP/QCRAD/E12 - Reprocess: reprocess with interpolated ebbr data
DataStreams:sgpqcrad1longE12.s2, sgpqcrad1longE12.c2
Description:
Met data from 5ebrr.b1 data is used at this site. The data in the ebbr data stream is 
5-minute average resolution while QCRad output has a 1-minute time interval. Currently the 
ebbr data is stored in the QCRad output only once every 5 minutes, rather than 
interpolating to each minute. i.e.it stores the data every 5 minutes and the rest of the time is 
filled with values of -9999. The reprocessed data will interpolate the ebbr data to 1-minute 
intervals.
    
This means that QC checks requiring Temperature data (impacting primarily the LW 
measurements) are only able to be done once every 5 minutes.
Suggestions: 
If users want to use QCRad to obtain meteorological data, be aware that the data is 

5-minute apart. Interpolation should be done if finer time intervals are required.
	  
Additionally, some LW irradiance QC checks are only applied once every 5 minutes, so not all data has been screened because of the missing meteorological values. There is not necessarily anything wrong with these irradiance measurements, we just have less information about their quality.


If users want to use QCRad to obtain meteorological data, be aware that the data is 
5
-minute apart. Interpolation should be done if finer time intervals are required.
	  

Additionally, some LW irradiance QC checks are only applied once every 5 minutes, so not 
all data has been screened because of the missing meteorological values. There is not necessarily anything wrong with these irradiance measurements, we just have less information about their quality.
Measurements:sgpqcrad1longE12.c2:
  • press
  • wind_direction
  • Temp_Air
  • wind_speed
  • precip
  • rh
more
sgpqcrad1longE12.s2:
  • wind_direction
  • precip
  • press
  • wind_speed
  • Temp_Air
  • rh
more

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