DQR ID | Subject | Data Streams Affected |
---|
D010831.3 | SGP/MFR10M/C1 - Head temperature problems | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D030916.7 | SGP/MFR10M/C1 - Artifact in data | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D050218.3 | SGP/MFR10M/C1 - Data discontinuities | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D050218.4 | SGP/MFR10M/C1 - Dip in data at solar noon | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D060411.7 | SGP/MFR10M/C1 - Missing data | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D090520.3 | SGP/MFR10M/C1 - Heater failure | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D091112.3 | SGP/MFR10M/C1 - Bad connection | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D100722.1 | SGP/MFR10M/C1 - Poor connection | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D990906.1 | SGP/MFR10M/C1 - Head heater not working | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
Subject: | SGP/MFR10M/C1 - Head temperature problems |
DataStreams: | sgpmfr10mC1.a0, sgpmfr10mC1.b1
|
Description: | Head temperature control was not functioning during the specified period. |
Measurements: | sgpmfr10mC1.b1: - 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- callang_flags
- cosine_solar_zenith_angle
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
- head_temp
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
sgpmfr10mC1.a0: - callang_flags
- head_temp
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
- 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
|
Subject: | SGP/MFR10M/C1 - Artifact in data |
DataStreams: | sgpmfr10mC1.a0, sgpmfr10mC1.b1
|
Description: | A cable was hanging under the instrument and was in the field of view of the instrument.
This resulted in some erroneous increases in the data, frequently around 22GMT. These
increases are likely from specular reflections off the cable. |
Measurements: | sgpmfr10mC1.b1: - logger_volt
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- base_time
- cosine_solar_zenith_angle
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
- time_offset
- 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- alt
- callang_flags
- lon
- head_temp
- lat
sgpmfr10mC1.a0: - callang_flags
- time_offset
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
- logger_volt
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
- lon
- base_time
- head_temp
- 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- lat
- alt
|
Subject: | SGP/MFR10M/C1 - Data discontinuities |
DataStreams: | sgpmfr10mC1.a0, sgpmfr10mC1.b1
|
Description: | There is a discontinuity in the data (all channels) just after 1500 UTC on June 27, 2003
and again, just before 1930 UTC on Jan 20, 2005. There is nothing unusual in the temp or
volt data.
At these times the tower was lowered for cleaning so the initial assumption was the
instrument was dirty, and a cleaning resulted in the discontinuity. This theory doesn't hold
up well though as the tower is lowered for instrument cleaning regularly and these are the
only two times in the past few years that a discontinuity coinciding with a lowering of
the tower has resulted.
Also, down pointing instruments are also not prone to collecting dust and dirt. This
instrument is located on the E13 SIRS tower and the down pointing PSP does not show a
discontinuity at either time, which further discounts the dirty instrument theory. Site
operations were asked to check the instrument mount to see if it was loose possibly causing the
instrument to change its position, and they reported that the mount seemed secure and
stable. So as of now, the cause of this issue is a mystery.
Compare with other down pointing instruments to help ascertain if data on one side of the
discontinuity or the other are "better." Perform an error analysis to determine if this
would introduce a significant error in the role the data stream plays in a user's research. |
Measurements: | sgpmfr10mC1.b1: - 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
sgpmfr10mC1.a0: - 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
- 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
|
Subject: | SGP/MFR10M/C1 - Dip in data at solar noon |
DataStreams: | sgpmfr10mC1.a0, sgpmfr10mC1.b1
|
Description: | On clear days there is a dip in the data (all channels) at solar noon that is more
pronounced during the winter months. While we currently don't know the cause of this dip, we
believe it is related to reflections off the tower pole. The working theory says at solar
noon the north-south crossbar shades the tower pole cutting off reflections into the
detector. If true, this means data on either side of the dip are being enhanced by
reflections and the data within the dip are actually "correct." An experiment is being planned
for next fall that will wrap the upper portion of the tower in a non-reflecting cloth.
This should determine if the dip is related to reflections from the tower pole.
Since at this point we don't know if the dip consists of bad or good data, users should be
aware there is a problem and treat all the data as suspect. It should noted that the
magnitude of the problem is relatively small, likely no greater than 2.5%, so the dataset
as whole is probably still useful as is for most users. |
Measurements: | sgpmfr10mC1.b1: - 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
sgpmfr10mC1.a0: - 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
- 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
|
Subject: | SGP/MFR10M/C1 - Missing data |
DataStreams: | sgpmfr10mC1.a0, sgpmfr10mC1.b1
|
Description: | Data are missing and unrecoverable. |
Measurements: | sgpmfr10mC1.b1: - logger_volt
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- base_time
- cosine_solar_zenith_angle
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
- time_offset
- 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- alt
- callang_flags
- lon
- head_temp
- lat
sgpmfr10mC1.a0: - callang_flags
- time_offset
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
- logger_volt
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
- lon
- base_time
- head_temp
- 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- lat
- alt
|
Subject: | SGP/MFR10M/C1 - Heater failure |
DataStreams: | sgpmfr10mC1.a0, sgpmfr10mC1.b1
|
Description: | The heater stopped working on 20090517. Maintenance on 20090520 seemed to resolve the
problem, but the heater failed again on 5/24. Additional maintenance on 20090610 seems to
have resolved the issue.
The instrument is designed to operate with a head temp of around 40 deg C. As the head
was at ambient temp during the period covered by this DQR, the mentor suggests looking at
the 25m MFR if one is interested in these data. |
Measurements: | sgpmfr10mC1.b1: - 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
- head_temp
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
sgpmfr10mC1.a0: - head_temp
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
- 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
|
Subject: | SGP/MFR10M/C1 - Bad connection |
DataStreams: | sgpmfr10mC1.a0, sgpmfr10mC1.b1
|
Description: | The instrument was pulled for quarterly calibration on 20091105. When the instrument was
reinstalled, the head cable was not making a good connection to the head. Cleaning the
connector and reinstalling resolved the issue. |
Measurements: | sgpmfr10mC1.b1: - 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
sgpmfr10mC1.a0: - 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
- 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
|
Subject: | SGP/MFR10M/C1 - Poor connection |
DataStreams: | sgpmfr10mC1.a0, sgpmfr10mC1.b1
|
Description: | The instrument was pulled for calibration on 5/11. Upon re-installation, a good
connection was not made. Problem resolved on 5/13. |
Measurements: | sgpmfr10mC1.b1: - 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
- head_temp
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
sgpmfr10mC1.a0: - head_temp
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
- 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
|