Data Quality Reports for Session: 142855 User: tami1toto Completed: 06/05/2012

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D020426.6SGP/TSI/C1 - sampling rate changesgptsiskycoverC1.b1, sgptsiskycoverC1.a1
D030130.3SGP/TSI/C1 - Metadata Errors in NetCDF HeadersgptsiskycoverC1.a1, sgptsiskycoverC1.b1
D040526.1SGP/TSI/C1 - Metadata errorssgptsiskycoverC1.a1, sgptsiskycoverC1.b1


DQRID : D020426.6
Start DateStart TimeEnd DateEnd Time
07/02/2000003504/26/20020018
Subject:
SGP/TSI/C1 - sampling rate change
DataStreams:sgptsiskycoverC1.b1, sgptsiskycoverC1.a1
Description:
SGP TSI-880 sampling rate changed from 20-second to
30-second at 20020426.001900 UTC (20020425.1819 SGP
CF local time) per ECR-00226 and BCR-00491.

This change brings all ARM TSIs to the same operational
sampling rate.  Daily SGP TSI data volume will decrease
by about 1/3 due to this change.
Measurements:sgptsiskycoverC1.a1:
  • count.mask
  • base_time
  • region.zenith.count.thin
  • region.sun.count.thin
  • count.thin
  • region.zenith.count
  • region.sun.count.opaque
  • count.sub.horz
  • count.box
  • count.opaque
  • alt
  • region.zenith.count.opaque
  • Sunshine Meter(sunny)
  • solar.altitude
  • count.sky
  • Cloud amount, thin (percent)(percent.thin)
  • count.sub.proczen
  • region.sun.count
  • Cloud amount, opaque (percent)(percent.opaque)
  • region.horizon.count.opaque
  • count.unknown
  • lon
  • time_offset
  • solar.azimuth
  • sun.strength
  • region.horizon.count
  • region.horizon.count.thin
  • lat
sgptsiskycoverC1.b1:
  • solar.altitude
  • region.horizon.count.opaque
  • count.mask
  • count.unknown
  • region.zenith.count
  • count.sub.proczen
  • lat
  • region.zenith.count.opaque
  • count.sky
  • region.sun.count.opaque
  • count.sub.horz
  • Cloud amount, thin (percent)(percent.thin)
  • Sunshine Meter(sunny)
  • region.sun.count
  • count.box
  • region.zenith.count.thin
  • count.opaque
  • region.sun.count.thin
  • lon
  • solar.azimuth
  • region.horizon.count
  • region.horizon.count.thin
  • alt
  • count.thin
  • base_time
  • Cloud amount, opaque (percent)(percent.opaque)
  • sun.strength
  • time_offset

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DQRID : D030130.3
Start DateStart TimeEnd DateEnd Time
07/02/2000003501/21/20032359
Subject:
SGP/TSI/C1 - Metadata Errors in NetCDF Header
DataStreams:sgptsiskycoverC1.a1, sgptsiskycoverC1.b1
Description:
The value of "sample_int" reported in the netCDF header is
incorrect.  The correct sampling interval is 30 seconds.

The maximum values for the variable "sunny" is incorrect.  
It should be 1, not 100 as documented in the netCDF header. 
Users should disregard the "qc_sunny" flag during this
period of time and apply their own qc check if desired.

The minimum value for the variable "solar.altitude" is
incorrect. It should be -90, not 10 as documented in the
netCDF header.  Users should disregard the "qc_solar.altitude"
flag during this period of time and apply their own qc check
if desired.
Measurements:sgptsiskycoverC1.a1:
  • time_offset
sgptsiskycoverC1.b1:
  • Sunshine Meter(sunny)
  • solar.altitude
  • time_offset

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DQRID : D040526.1
Start DateStart TimeEnd DateEnd Time
07/02/2000003505/05/20032359
Subject:
SGP/TSI/C1 - Metadata errors
DataStreams:sgptsiskycoverC1.a1, sgptsiskycoverC1.b1
Description:
The latitude, longitude and altitude of the Total Sky Imager 
(TSI) were incorrectly entered into the ARM database.  The 
correct location of the SGP.C1 TSI is:
   Lat: 36.606N
   Lon: 97.485W
   Alt:    316m
Measurements:sgptsiskycoverC1.a1:
  • alt
  • lon
  • lat
sgptsiskycoverC1.b1:
  • lon
  • alt
  • lat

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