DQR ID | Subject | Data Streams Affected |
---|
D010831.3 | SGP/MFR10M/C1 - Head temperature problems | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D020620.42 | SGP/MFR25M/C1 - Loose connections | sgpmfr25mC1.a0, sgpmfr25mC1.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.b1, sgpmfr10mC1.a0 |
D090226.8 | SGP/MFR25M/C1 - Missing data | sgpmfr25mC1.a0, sgpmfr25mC1.b1 |
D090520.3 | SGP/MFR10M/C1 - Heater failure | sgpmfr10mC1.b1, sgpmfr10mC1.a0 |
D091112.3 | SGP/MFR10M/C1 - Bad connection | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D100722.1 | SGP/MFR10M/C1 - Poor connection | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D120229.2 | SGP/MFR10M/C1 - Noise in ch415, sensor degradation | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D120229.3 | SGP/MFR10M/C1 - Channel 615 dead | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D120229.4 | SGP/MFR10M/C1 - Broadband channel failure | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D941227.4 | SGP/MFR10M/C1 - Tower lowered for maintenance | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D950327.1 | SGP/MFR10M/C1 - New datalogger PROM | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D960914.17 | SGP/MFR10m/C1 - Small intermittent time stamp error | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D960914.18 | SGP/MFR25M/C1 - Intermittent small time stamp error | sgpmfr25mC1.a0, sgpmfr25mC1.b1 |
D961008.1 | SGP/MFR10M/C1 - Corrupt or truncated data | sgpmfr10mC1.a0, sgpmfr10mC1.b1 |
D961010.1 | SGP/MFR25M/C1 - poor data quality | sgpmfr25mC1.a0, sgpmfr25mC1.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/MFR25M/C1 - Loose connections |
DataStreams: | sgpmfr25mC1.a0, sgpmfr25mC1.b1
|
Description: | No solar data after 03/24/2002 and no head temp data after 03/25/2002. Connections were
reseated on 04/02/2002, but the data still looked bad. More maintenance occurred on
04/11/2002, when a reseating and tightening of the connections was performed. |
Measurements: | sgpmfr25mC1.b1: - 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- lon
- logger_volt
- cosine_solar_zenith_angle
- time_offset
- base_time
- lat
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
- 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)
- alt
- callang_flags
- head_temp
sgpmfr25mC1.a0: - alt
- base_time
- 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)
- lat
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- 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 Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- callang_flags
- logger_volt
- time_offset
- lon
|
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.b1, sgpmfr10mC1.a0
|
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
- logger_volt
- 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 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/MFR25M/C1 - Missing data |
DataStreams: | sgpmfr25mC1.a0, sgpmfr25mC1.b1
|
Description: | Data are missing and unrecoverable. |
Measurements: | sgpmfr25mC1.b1: - 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- lon
- time
- logger_volt
- cosine_solar_zenith_angle
- time_offset
- base_time
- lat
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
- 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)
- alt
- callang_flags
- head_temp
sgpmfr25mC1.a0: - alt
- base_time
- 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)
- lat
- 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- 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 Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- callang_flags
- time
- logger_volt
- time_offset
- lon
|
Subject: | SGP/MFR10M/C1 - Heater failure |
DataStreams: | sgpmfr10mC1.b1, sgpmfr10mC1.a0
|
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)
- head_temp
- 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: - 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)
|
Subject: | SGP/MFR10M/C1 - Noise in ch415, sensor degradation |
DataStreams: | sgpmfr10mC1.a0, sgpmfr10mC1.b1
|
Description: | This instrument experienced general degradation over a period of more than a year. Please
see D120229.3 (DQPR-2693) and D120229.4 (DQPR-2763) for more information.
The 415nm channel was noisy. The noise wasn't extreme, so initially at least, the mentor
would not expect much impact in using the 415 data. However, toward the end of the
period covered by this DQR, we start seeing a general degradation of this instrument. On
20110720, after a calibration, channel 615 is dead. On 20111101 the open channel stops
functioning.
This instrument is calibrated every three months. The past couple/few calibrations showed
a steady decline in the sensitivity of 415. The declining sensitivity should be
generally accounted for by each new calibration, but as time moved one, one should become less
and less confident in those (415) data.
In general, the mentor would suggest using 20110720 as a cut-off date for reliable data
(all channels). Caution is given for all channels as the instrument is failing, though the
channels not specifically mentioned may be OK. |
Measurements: | sgpmfr10mC1.b1: - 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
sgpmfr10mC1.a0: - 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
|
Subject: | SGP/MFR10M/C1 - Tower lowered for maintenance |
DataStreams: | sgpmfr10mC1.a0, sgpmfr10mC1.b1
|
Description: | The 10-m tower at the central facility central cluster was lowered
by site operations personnel for maintenance and repair activities.
During this time interval, the multifilter radiometer on the tower
had a field of view that were altered, possibly to include some sky
radiation. Data from this sensor should not be included in any
analyses, for the specified time interval and location. |
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 - New datalogger PROM |
DataStreams: | sgpmfr10mC1.a0, sgpmfr10mC1.b1
|
Description: | The sgpmfr10m datalogger had its PROM upgraded during a visit by the instrument mentors.
The new PROM is Version 13 with the capability of operating the MFR heater without a
shadowband motor attached to the MFR head. No operating changes resulted from this upgrade. |
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 - Small intermittent time stamp error |
DataStreams: | sgpmfr10mC1.a0, sgpmfr10mC1.b1
|
Description: | The internal code that runs the MFR data logger had a bug that occasionally caused the
time stamp associated with the data to be slightly in error. This error is thought to be
very small (say less than 30 seconds) and very infrequent. (Unfortunately, we cannot give
firm estimates of the magnitude and frequency of the error).
Also, the upwelling MFR measurements were contaminated by electrical noise originating
from the heater contained in the sensor head. During the time the sensor head was polled by
the data logger, the heater would strobe "on and off", and the noise caused by this
strobing could greatly contaminate the data. Some of the data is so contaminated that it is
virtually useless.
After 96/03/27 these problems were corrected. Those who use the data before this time
should realize that the time stamp for each record of data might be slightly in error, and
the data could be very noisy due to the heater switching on and off. |
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)
- callang_flags
- head_temp
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)
- base_time
- head_temp
- 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
|
Subject: | SGP/MFR25M/C1 - Intermittent small time stamp error |
DataStreams: | sgpmfr25mC1.a0, sgpmfr25mC1.b1
|
Description: | The internal code that runs the MFR data logger had a bug that occasionally caused the
time stamp associated with the data to be slightly in error. This error is thought to be
very small (say less than 30 seconds) and very infrequent. (Unfortunately, we cannot give
firm estimates of the magnitude and frequency of the error).
Also, the upwelling MFR measurements were contaminated by electrical noise originating
from the heater contained in the sensor head. During the time the sensor head was polled by
the data logger, the heater would strobe "on and off", and the noise caused by this
strobing could greatly contaminate the data. Some of the data is so contaminated that it is
virtually useless.
After 96/03/27 these problems were corrected. Those who use the data before this time
should realize that the time stamp for each record of data might be slightly in error, and
the data could be very noisy due to the heater switching on and off. |
Measurements: | sgpmfr25mC1.b1: - 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- logger_volt
- cosine_solar_zenith_angle
- time_offset
- base_time
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
- 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)
- callang_flags
- head_temp
sgpmfr25mC1.a0: - base_time
- 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 Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- 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 Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- callang_flags
- logger_volt
- time_offset
|
Subject: | SGP/MFR10M/C1 - Corrupt or truncated data |
DataStreams: | sgpmfr10mC1.a0, sgpmfr10mC1.b1
|
Description: | On about 96/08/18, the data logger board for the downlooking 10m MFR was modified to test
an upgrade. Unfortunately this upgrade did not work as planned, and some data was either
corrupted or truncated. You can't miss the corrupted data (from which you can infer
albedos much greater than one!). The truncated data is truncated in time, by which we mean
that only a half day's worth of data was collected. The daily time span of these
truncated data is from midnight to about 1 PM (local time). At about 96/10/03, these problems
were corrected.
Note: The "begin date" given for this DQR may be off a day or two, so beware. |
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)
- cosine_solar_zenith_angle
- callang_flags
- 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
- logger_volt
- 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/MFR25M/C1 - poor data quality |
DataStreams: | sgpmfr25mC1.a0, sgpmfr25mC1.b1
|
Description: | In the middle of August, the logger board that collects data from the 25m MFR was
upgraded. This upgrade did not work out as planned, and the data quality from the MFR are not
good. The poor data is easily identifiable - you'll know it when you see it. After
19961008, a new logger board was installed that solved the problem.
Note: the exact date when these problems started is not known with precision; it could be
several days prior to or after 960822. |
Measurements: | sgpmfr25mC1.b1: - 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
- 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)
- cosine_solar_zenith_angle
- callang_flags
sgpmfr25mC1.a0: - 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
- callang_flags
- 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 Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
- 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
|