Data Quality Reports for Session: 151777 User: tjwagner Completed: 07/24/2013

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
D031218.1SGP/TSI/C1 - Shadowband misalignedsgptsiC1.00, sgptsicldmaskC1.a1, sgptsiskycoverC1.a1, sgptsiskycoverC1.b1,
sgptsiskyimageC1.a1
D040526.1SGP/TSI/C1 - Metadata errorssgptsiskycoverC1.a1, sgptsiskycoverC1.b1
D041116.2SGP/TSI/C1 - Shadowband MisalignmentsgptsiskycoverC1.b1, sgptsiskyimageC1.a1, sgptsicldmaskC1.a1
D050321.2SGP/TSI/C1 - Instrument failuresgptsiC1.00, sgptsicldmaskC1.a1, sgptsiskycoverC1.b1, sgptsiskyimageC1.a1
D050928.8SGP/TSI/C1 - Heater problemsgptsicldmaskC1.a1, sgptsiskycoverC1.b1, sgptsiskyimageC1.a1
D080411.2SGP/TSI/C1 - Missing datasgptsicldmaskC1.a1, sgptsimovieC1.a1, sgptsiskycoverC1.b1, sgptsiskyimageC1.a1
D080414.2SGP/TSI/C1 - Contamination of mirrorsgptsiskycoverC1.b1, sgptsiskyimageC1.a1, sgptsicldmaskC1.a1, sgptsimovieC1.a1
D111006.5SGP/TSI/C1 - Ingest ProblemsgptsiskycoverC1.b1
D121016.4SGP/TSI/C1 - Water on lenssgptsiskycoverC1.b1
D130423.8SGP/TSI/C1 - Mirror contaminationsgptsiskycoverC1.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 : D031218.1
Start DateStart TimeEnd DateEnd Time
06/25/2003184007/05/20031523
Subject:
SGP/TSI/C1 - Shadowband misaligned
DataStreams:sgptsiC1.00, sgptsicldmaskC1.a1, sgptsiskycoverC1.a1, sgptsiskycoverC1.b1,
sgptsiskyimageC1.a1
Description:
The shadowband and mask were initially misaligned after the re-installation of the TSI.
Measurements:sgptsicldmaskC1.a1:
  • Cloud decision images, Total Sky Imager, PNG format(png)
sgptsiskyimageC1.a1:
  • JPEG data stream - documentation not yet available
sgptsiC1.00:
  • Raw data stream - documentation not supported
sgptsiskycoverC1.a1:
  • region.zenith.count.thin
  • region.sun.count.thin
  • Cloud amount, thin (percent)(percent.thin)
  • region.sun.count
  • region.zenith.count
  • region.sun.count.opaque
  • region.horizon.count.opaque
  • Cloud amount, opaque (percent)(percent.opaque)
  • region.horizon.count
  • region.zenith.count.opaque
  • region.horizon.count.thin
sgptsiskycoverC1.b1:
  • region.horizon.count.opaque
  • count.mask
  • region.zenith.count.thin
  • region.zenith.count
  • count.unknown
  • count.sub.proczen
  • region.zenith.count.opaque
  • count.sky
  • region.sun.count.opaque
  • count.opaque
  • region.sun.count.thin
  • region.horizon.count
  • region.horizon.count.thin
  • count.sub.horz
  • count.thin
  • Cloud amount, thin (percent)(percent.thin)
  • region.sun.count
  • count.box
  • Cloud amount, opaque (percent)(percent.opaque)

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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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DQRID : D041116.2
Start DateStart TimeEnd DateEnd Time
10/25/2004164011/16/20042232
Subject:
SGP/TSI/C1 - Shadowband Misalignment
DataStreams:sgptsiskycoverC1.b1, sgptsiskyimageC1.a1, sgptsicldmaskC1.a1
Description:
The shadowband was slightly misaligned and was corrected by adjusting it +2 degrees.
Measurements:sgptsicldmaskC1.a1:
  • Cloud decision images, Total Sky Imager, PNG format(png)
sgptsiskyimageC1.a1:
  • JPEG data stream - documentation not yet available
sgptsiskycoverC1.b1:
  • count.sky
  • count.opaque
  • region.sun.count.opaque
  • region.sun.count.thin
  • region.sun.count
  • Cloud amount, opaque (percent)(percent.opaque)
  • count.mask
  • Cloud amount, thin (percent)(percent.thin)
  • count.thin
  • count.sub.proczen

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DQRID : D050321.2
Start DateStart TimeEnd DateEnd Time
03/17/2005192504/05/20051630
Subject:
SGP/TSI/C1 - Instrument failure
DataStreams:sgptsiC1.00, sgptsicldmaskC1.a1, sgptsiskycoverC1.b1, sgptsiskyimageC1.a1
Description:
The TSI-880 experienced a power and/or computer failure. It was replaced with a spare 
TSI-440 and data collection resumed 4/5/05.  Note: this is a temporary replacement.
Measurements:sgptsicldmaskC1.a1:
  • Cloud decision images, Total Sky Imager, PNG format(png)
sgptsiskyimageC1.a1:
  • JPEG data stream - documentation not yet available
sgptsiC1.00:
  • Raw data stream - documentation not supported
sgptsiskycoverC1.b1:
  • solar.altitude
  • region.horizon.count.opaque
  • count.mask
  • region.zenith.count.thin
  • count.unknown
  • region.zenith.count
  • count.sub.proczen
  • lat
  • region.zenith.count.opaque
  • count.sky
  • count.opaque
  • region.sun.count.opaque
  • region.sun.count.thin
  • lon
  • solar.azimuth
  • region.horizon.count
  • count.sub.horz
  • region.horizon.count.thin
  • alt
  • count.thin
  • Cloud amount, thin (percent)(percent.thin)
  • base_time
  • Sunshine Meter(sunny)
  • region.sun.count
  • count.box
  • Cloud amount, opaque (percent)(percent.opaque)
  • sun.strength
  • time_offset

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DQRID : D050928.8
Start DateStart TimeEnd DateEnd Time
08/01/2005213510/06/20051650
Subject:
SGP/TSI/C1 - Heater problem
DataStreams:sgptsicldmaskC1.a1, sgptsiskycoverC1.b1, sgptsiskyimageC1.a1
Description:
The TSI was converted from a model 880 to 660 which requires separate power for the mirror 
heater. The heater was not powered during this period so morning dew and other 
condensation was not quickly evaporated.
Measurements:sgptsicldmaskC1.a1:
  • Cloud decision images, Total Sky Imager, PNG format(png)
sgptsiskyimageC1.a1:
  • JPEG data stream - documentation not yet available
sgptsiskycoverC1.b1:
  • count.opaque
  • Cloud amount, opaque (percent)(percent.opaque)
  • Cloud amount, thin (percent)(percent.thin)
  • count.thin

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DQRID : D080411.2
Start DateStart TimeEnd DateEnd Time
07/23/2007211008/27/20071530
Subject:
SGP/TSI/C1 - Missing data
DataStreams:sgptsicldmaskC1.a1, sgptsimovieC1.a1, sgptsiskycoverC1.b1, sgptsiskyimageC1.a1
Description:
Data are missing and unrecoverable.
Measurements:sgptsicldmaskC1.a1:
  • Cloud decision images, Total Sky Imager, PNG format(png)
sgptsiskyimageC1.a1:
  • JPEG data stream - documentation not yet available
sgptsimovieC1.a1:
  • MPEG data stream - documentation not yet available
sgptsiskycoverC1.b1:
  • solar.altitude
  • region.horizon.count.opaque
  • count.mask
  • region.zenith.count.thin
  • count.unknown
  • region.zenith.count
  • count.sub.proczen
  • lat
  • region.zenith.count.opaque
  • count.sky
  • count.opaque
  • region.sun.count.opaque
  • region.sun.count.thin
  • lon
  • solar.azimuth
  • region.horizon.count
  • count.sub.horz
  • region.horizon.count.thin
  • alt
  • count.thin
  • Cloud amount, thin (percent)(percent.thin)
  • base_time
  • Sunshine Meter(sunny)
  • region.sun.count
  • count.box
  • Cloud amount, opaque (percent)(percent.opaque)
  • sun.strength
  • time_offset

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DQRID : D080414.2
Start DateStart TimeEnd DateEnd Time
03/21/2008000004/15/20081600
Subject:
SGP/TSI/C1 - Contamination of mirror
DataStreams:sgptsiskycoverC1.b1, sgptsiskyimageC1.a1, sgptsicldmaskC1.a1, sgptsimovieC1.a1
Description:
A persistent bird was landing on and polluting the mirror, multiple times throughout the 
day. Spikes were placed on the corners and top of the instrument (an affective deterrent 
in the past) but this bird had the agility to perch on the top-center of the mirror.
Measurements:sgptsicldmaskC1.a1:
  • Cloud decision images, Total Sky Imager, PNG format(png)
sgptsiskyimageC1.a1:
  • JPEG data stream - documentation not yet available
sgptsimovieC1.a1:
  • MPEG data stream - documentation not yet available
sgptsiskycoverC1.b1:
  • count.sky
  • count.opaque
  • Cloud amount, opaque (percent)(percent.opaque)
  • region.zenith.count.thin
  • region.zenith.count
  • Cloud amount, thin (percent)(percent.thin)
  • count.thin
  • region.zenith.count.opaque

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DQRID : D111006.5
Start DateStart TimeEnd DateEnd Time
11/11/2010165010/20/20111800
Subject:
SGP/TSI/C1 - Ingest Problem
DataStreams:sgptsiskycoverC1.b1
Description:
A minor error was made with diagnostic metadata attribute sunny_thresh when the TSI ingest 
was updated.
Measurements:sgptsiskycoverC1.b1:
  • base_time

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DQRID : D121016.4
Start DateStart TimeEnd DateEnd Time
08/15/2011221710/16/20121705
Subject:
SGP/TSI/C1 - Water on lens
DataStreams:sgptsiskycoverC1.b1
Description:
After a rain episode, drops of water collected on the lens window causing the cloud 
fraction values to be suspect.

To prevent this, a drip edge was formed around the bottom of the enclosure with thick 
electrical or splicing tape.
Measurements:sgptsiskycoverC1.b1:
  • count.sky
  • count.opaque
  • Cloud amount, opaque (percent)(percent.opaque)
  • region.zenith.count.thin
  • region.zenith.count
  • Cloud amount, thin (percent)(percent.thin)
  • count.thin
  • region.zenith.count.opaque

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DQRID : D130423.8
Start DateStart TimeEnd DateEnd Time
12/31/2010134701/04/20111550
09/01/2012002309/04/20121430
Subject:
SGP/TSI/C1 - Mirror contamination
DataStreams:sgptsiskycoverC1.b1
Description:
The surface of the chrome mirror was soiled causing the cloud fraction determination to be 
unreliable.
Measurements:sgptsiskycoverC1.b1:
  • count.opaque
  • Cloud amount, opaque (percent)(percent.opaque)
  • Cloud amount, thin (percent)(percent.thin)
  • count.thin

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