Data Quality Reports for Session: 180917 User: fmei Completed: 10/31/2016

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D130509.1NSA/IRT/C1 - Measurement below minimum thresholdnsairtC1.b1, nsairt200msC1.a1Suspect
D140204.1OLI/IRT/M1 - IRT not insulatedoliirtM1.b1, oliirt200msM1.a1Suspect
D140304.5NSA/IRT/C1 - Reprocessing Notice (RID 1097)nsairtC1.b1, nsairt200msC1.a1Does not affect quality
D141013.5OLI/IRT/M1 - Instrument CommunicationoliirtM1.b1, oliirt200msM1.a1Missing
D141016.5OLI/IRT/M1 - power failureoliirtM1.b1, oliirt200msM1.a1Missing
D141204.3NSA/IRT/C1 - Incorrect qc_flag valuesnsairtC1.b1Does not affect quality
D150123.6OLI/IRT/M1 - Missing data due to loss of poweroliirtM1.b1, oliirt200msM1.a1Missing
D150327.6OLI/IRT/M1 - Environmental conditions resulted in missing dataoliirtM1.b1, oliirt200msM1.a1Missing
D150417.7OLI/IRT/M1 - Environmental conditions resulted in missing dataoliirtM1.b1, oliirt200msM1.a1Missing
D150424.4OLI/IRT/M1 - EnvironmentaloliirtM1.b1, oliirt200msM1.a1Missing
D150731.1NSA/IRT/C1 - power outagensairtC1.b1, nsairt200msC1.a1Missing
D160718.1NSA/IRT/MWR/C1 - Data Missing - Data System UpgradesnsairtC1.b1, nsairt200msC1.a1Missing
D160801.3OLI/IRT/M1 - Missing dataoliirtM1.b1, oliirt200msM1.a1Missing
D161005.4OLI/IRT/M1 - data acquisitionoliirtM1.b1, oliirt200msM1.a1Missing


DQRID : D130509.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/11/2008193602/26/20142231Suspect
Subject:
NSA/IRT/C1 - Measurement below minimum threshold
DataStreams:nsairtC1.b1, nsairt200msC1.a1
Description:
When the actual sky temperature is less than the minimum measureable of 213.2K (-60C), the 
IRT (serial) value is mostly -9999 (missing) with an occasionally valid but usually not 
accurate reading, resulting in the "noisy" data. This situation will occur only during 
periods of very clear skies with low precipitable water vapor (cold and dry). 

The problem was be solved by upgrading the IRT to a model with a lower measuring threshold 
of 173.2K (-100C).
Measurements:nsairt200msC1.a1:
  • Sky infrared temperature(sky_ir_temp)
nsairtC1.b1:
  • sky_ir_temp_std
  • sky_ir_temp_max
  • Sky infrared temperature(sky_ir_temp)
  • sky_ir_temp_min

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DQRID : D140204.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
11/21/2013082001/18/20140805Suspect
Subject:
OLI/IRT/M1 - IRT not insulated
DataStreams:oliirtM1.b1, oliirt200msM1.a1
Description:
When the IRT was exposed to ambient air temperatures below ~-30C, the internal reference 
temperature measurement reached a minimum, constant value of -22.71 C. Without an AERI to 
compare with, the affect on sky temperature measurements may be unknown. The IRT was 
insulated on 1/14.
Measurements:oliirt200msM1.a1:
  • ref_ir_temp
oliirtM1.b1:
  • ref_ir_temp

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DQRID : D140304.5
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/26/2014223203/03/20141920Does not affect quality
Subject:
NSA/IRT/C1 - Reprocessing Notice (RID 1097)
DataStreams:nsairtC1.b1, nsairt200msC1.a1
Description:
See below for details of reprocessing that was completed on 20140822.  Original DQR 
category: 4 (Red, Incorrect ).

-----------------------------------------------------------

The upgraded IRT was installed but was not automatically configured correctly. 
Measurements are in degrees C not K.
Measurements:nsairt200msC1.a1:
  • Sky infrared temperature(sky_ir_temp)
  • ref_ir_temp
nsairtC1.b1:
  • ref_ir_temp
  • sky_ir_temp_max
  • Sky infrared temperature(sky_ir_temp)
  • sky_ir_temp_min

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DQRID : D141013.5
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/22/2014175010/02/20141829Missing
Subject:
OLI/IRT/M1 - Instrument Communication
DataStreams:oliirtM1.b1, oliirt200msM1.a1
Description:
The serial cable connector became disconnected, apparently causing the datalogger to fail. 
The datalogger was replaced on 7/23 and the IRT analog cable was reconnected but the 
serial cable was not connected to avoid the same event happening again. The DB9 connectors 
inside the IRT enclosure were cleaned of corrosion and the serial cable was eventually 
reconnected.
Measurements:oliirt200msM1.a1:
  • East longitude(lon)
  • Altitude above mean sea level(alt)
  • time
  • time_offset
  • base_time
  • Sky infrared temperature(sky_ir_temp)
  • ref_ir_temp
  • North latitude(lat)
oliirtM1.b1:
  • sky_ir_temp_std
  • Altitude above mean sea level(alt)
  • base_time
  • North latitude(lat)
  • Sky infrared temperature(sky_ir_temp)
  • sky_ir_temp_min
  • East longitude(lon)
  • time_offset
  • time
  • samples_in_average
  • sky_ir_temp_max
  • ref_ir_temp

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DQRID : D141016.5
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/04/2014180010/14/20141343Missing
Subject:
OLI/IRT/M1 - power failure
DataStreams:oliirtM1.b1, oliirt200msM1.a1
Description:
The site data system experienced a power failure.
Measurements:oliirt200msM1.a1:
  • East longitude(lon)
  • Altitude above mean sea level(alt)
  • time
  • time_offset
  • base_time
  • Sky infrared temperature(sky_ir_temp)
  • ref_ir_temp
  • North latitude(lat)
oliirtM1.b1:
  • sky_ir_temp_std
  • Altitude above mean sea level(alt)
  • base_time
  • North latitude(lat)
  • Sky infrared temperature(sky_ir_temp)
  • sky_ir_temp_min
  • East longitude(lon)
  • time_offset
  • time
  • samples_in_average
  • sky_ir_temp_max
  • ref_ir_temp

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DQRID : D141204.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/26/2014224001/06/20152300Does not affect quality
Subject:
NSA/IRT/C1 - Incorrect qc_flag values
DataStreams:nsairtC1.b1
Description:
When the IRTs were upgraded, the values of sky_ir_temp:min, sky_ir_temp:max, 
sky_ir_temp:resolution, and ref_ir_temp:min were not changed. The quality control fields for these 
limits are incorrect.
Measurements:nsairtC1.b1:
  • ref_ir_temp
  • sky_ir_temp_std
  • sky_ir_temp_max
  • Sky infrared temperature(sky_ir_temp)
  • sky_ir_temp_min

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DQRID : D150123.6
Start DateStart TimeEnd DateEnd Time Data Quality Metric
12/31/2014030001/08/20152359Missing
Subject:
OLI/IRT/M1 - Missing data due to loss of power
DataStreams:oliirtM1.b1, oliirt200msM1.a1
Description:
Data not available due to site losing power.
Measurements:oliirt200msM1.a1:
  • East longitude(lon)
  • Altitude above mean sea level(alt)
  • time
  • time_offset
  • base_time
  • Sky infrared temperature(sky_ir_temp)
  • ref_ir_temp
  • North latitude(lat)
oliirtM1.b1:
  • sky_ir_temp_std
  • Altitude above mean sea level(alt)
  • base_time
  • North latitude(lat)
  • Sky infrared temperature(sky_ir_temp)
  • sky_ir_temp_min
  • East longitude(lon)
  • time_offset
  • time
  • samples_in_average
  • sky_ir_temp_max
  • ref_ir_temp

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DQRID : D150327.6
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/01/2015040003/18/20151700Missing
Subject:
OLI/IRT/M1 - Environmental conditions resulted in missing data
DataStreams:oliirtM1.b1, oliirt200msM1.a1
Description:
Extreme weather prevented fueling of the emergency generator that was providing site 
power. The site data system was gracefully shut down.
Measurements:oliirt200msM1.a1:
  • East longitude(lon)
  • Altitude above mean sea level(alt)
  • time
  • time_offset
  • base_time
  • Sky infrared temperature(sky_ir_temp)
  • ref_ir_temp
  • North latitude(lat)
oliirtM1.b1:
  • sky_ir_temp_std
  • Altitude above mean sea level(alt)
  • base_time
  • North latitude(lat)
  • Sky infrared temperature(sky_ir_temp)
  • sky_ir_temp_min
  • East longitude(lon)
  • time_offset
  • time
  • samples_in_average
  • sky_ir_temp_max
  • ref_ir_temp

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DQRID : D150417.7
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/30/2015200004/01/20151905Missing
Subject:
OLI/IRT/M1 - Environmental conditions resulted in missing data
DataStreams:oliirtM1.b1, oliirt200msM1.a1
Description:
A transient power anomaly occurred and severe weather prevented site operators from 
getting to the site.
Measurements:oliirt200msM1.a1:
  • East longitude(lon)
  • Altitude above mean sea level(alt)
  • time
  • time_offset
  • base_time
  • Sky infrared temperature(sky_ir_temp)
  • ref_ir_temp
  • North latitude(lat)
oliirtM1.b1:
  • sky_ir_temp_std
  • Altitude above mean sea level(alt)
  • base_time
  • North latitude(lat)
  • Sky infrared temperature(sky_ir_temp)
  • sky_ir_temp_min
  • East longitude(lon)
  • time_offset
  • time
  • samples_in_average
  • sky_ir_temp_max
  • ref_ir_temp

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DQRID : D150424.4
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/19/2015125004/21/20151807Missing
Subject:
OLI/IRT/M1 - Environmental
DataStreams:oliirtM1.b1, oliirt200msM1.a1
Description:
The site was without power.
Measurements:oliirt200msM1.a1:
  • East longitude(lon)
  • Altitude above mean sea level(alt)
  • time
  • time_offset
  • base_time
  • Sky infrared temperature(sky_ir_temp)
  • ref_ir_temp
  • North latitude(lat)
oliirtM1.b1:
  • sky_ir_temp_std
  • Altitude above mean sea level(alt)
  • base_time
  • North latitude(lat)
  • Sky infrared temperature(sky_ir_temp)
  • sky_ir_temp_min
  • East longitude(lon)
  • time_offset
  • time
  • samples_in_average
  • sky_ir_temp_max
  • ref_ir_temp

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DQRID : D150731.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/18/2015020007/22/20151906Missing
Subject:
NSA/IRT/C1 - power outage
DataStreams:nsairtC1.b1, nsairt200msC1.a1
Description:
The IRT was not receiving power.
Measurements:nsairt200msC1.a1:
  • East longitude(lon)
  • time
  • Altitude above mean sea level(alt)
  • Sky infrared temperature(sky_ir_temp)
  • ref_ir_temp
  • time_offset
  • North latitude(lat)
  • base_time
nsairtC1.b1:
  • ref_ir_temp
  • sky_ir_temp_std
  • base_time
  • samples_in_average
  • North latitude(lat)
  • Altitude above mean sea level(alt)
  • time_offset
  • time
  • sky_ir_temp_max
  • East longitude(lon)
  • sky_ir_temp_min
  • Sky infrared temperature(sky_ir_temp)

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DQRID : D160718.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/12/2016160007/13/20161952Missing
Subject:
NSA/IRT/MWR/C1 - Data Missing - Data System Upgrades
DataStreams:nsairtC1.b1, nsairt200msC1.a1
Description:
Site data systems were being upgraded during this period.
Measurements:nsairt200msC1.a1:
  • East longitude(lon)
  • time
  • Altitude above mean sea level(alt)
  • Sky infrared temperature(sky_ir_temp)
  • ref_ir_temp
  • time_offset
  • North latitude(lat)
  • base_time
nsairtC1.b1:
  • ref_ir_temp
  • qc_sky_ir_temp
  • qc_sky_ir_temp_min
  • sky_ir_temp_std
  • base_time
  • samples_in_average
  • qc_ref_ir_temp
  • North latitude(lat)
  • Altitude above mean sea level(alt)
  • time_offset
  • time
  • sky_ir_temp_max
  • qc_sky_ir_temp_max
  • East longitude(lon)
  • sky_ir_temp_min
  • Sky infrared temperature(sky_ir_temp)

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DQRID : D160801.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/25/2016170007/26/20161959Missing
Subject:
OLI/IRT/M1 - Missing data
DataStreams:oliirtM1.b1, oliirt200msM1.a1
Description:
Missing data related to OLI system upgrades.
Measurements:oliirt200msM1.a1:
  • East longitude(lon)
  • Altitude above mean sea level(alt)
  • time
  • time_offset
  • base_time
  • Sky infrared temperature(sky_ir_temp)
  • ref_ir_temp
  • North latitude(lat)
oliirtM1.b1:
  • sky_ir_temp_std
  • Altitude above mean sea level(alt)
  • base_time
  • North latitude(lat)
  • Sky infrared temperature(sky_ir_temp)
  • sky_ir_temp_min
  • qc_sky_ir_temp
  • East longitude(lon)
  • time_offset
  • qc_ref_ir_temp
  • time
  • samples_in_average
  • sky_ir_temp_max
  • ref_ir_temp
  • qc_sky_ir_temp_max
  • qc_sky_ir_temp_min

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DQRID : D161005.4
Start DateStart TimeEnd DateEnd Time Data Quality Metric
09/16/2016175010/05/20161359Missing
Subject:
OLI/IRT/M1 - data acquisition
DataStreams:oliirtM1.b1, oliirt200msM1.a1
Description:
The irt_comm program stopped communicating with the IRT. The program was restarted.
Measurements:oliirt200msM1.a1:
  • East longitude(lon)
  • Altitude above mean sea level(alt)
  • time
  • time_offset
  • base_time
  • Sky infrared temperature(sky_ir_temp)
  • ref_ir_temp
  • North latitude(lat)
oliirtM1.b1:
  • sky_ir_temp_std
  • Altitude above mean sea level(alt)
  • base_time
  • North latitude(lat)
  • Sky infrared temperature(sky_ir_temp)
  • sky_ir_temp_min
  • qc_sky_ir_temp
  • East longitude(lon)
  • time_offset
  • qc_ref_ir_temp
  • time
  • samples_in_average
  • sky_ir_temp_max
  • ref_ir_temp
  • qc_sky_ir_temp_max
  • qc_sky_ir_temp_min

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