DQR ID | Subject | Data Streams Affected |
---|---|---|
D080828.1 | HFE/MWR/M1 - Insufficient calibration stability | hfemwrlosM1.b1, hfemwrtipM1.a1 |
D081007.2 | HFE/ECOR/M1 - Sonic failure | hfe30ecorM1.b1 |
D081022.13 | HFE/MET/M1 - Wind speed data contain offset due to induced voltage | hfemetM1.b1 |
D090203.2 | HFE/MWRHF/M1 - 150-GHz data drop out | hfemwrhfM1.b1 |
D090211.3 | HFE/AOS/M1 - No sub 1 micron data | hfeaosM1.a1 |
D090211.4 | HFE/AOS/M1 - Humidifier failure | hfeaosM1.a1 |
D090211.5 | HFE/AOS/M1 - CPC data missing | hfeaosM1.a1 |
D090211.6 | HFE/AOS/M1 - CCN missing | hfeaosccnM1.a1 |
D090211.7 | HFE/AOS/M1 - PSAP data missing | hfeaosM1.a1 |
D090212.4 | HFE/MPL/M1 - Frosting/Condensation | hfemplpolM1.b1, hfemplpolavgM1.c1, hfemplpolavgM1.s1 |
D090213.1 | HFE/SKYRAD/M1 - IRT bias | hfeskyrad60sM1.b1 |
D090213.2 | HFE/MWRHF/M1 - Frosting/Condensation | hfemwrhfM1.b1 |
D090213.3 | HFE/MWRHF/M1 - Calibration updates | hfemwrhfM1.b1 |
D090213.4 | HFE/MWRHF/M1 - Rain sensor failure | hfemwrhfM1.b1 |
D090216.3 | HFE/MET/M1 - Intermittent barometer failure | hfemetM1.b1 |
D090216.4 | HFE/MET/M1 - Intermittent PWD data | hfemetM1.b1 |
D090220.2 | HFE/MET/M1 - ORG measuring ice crystals or fog | hfemetM1.b1 |
D090220.3 | HFE/MET/M1 - Induced voltage on wind speed sensor cable | hfemetM1.b1 |
D090223.9 | HFE/MWRP/M1 - Reprocess: Bias in LWP retrievals | hfemwrpM1.b1 |
D090225.1 | HFE/MFRSR/M1 - Shading problem | hfemfrsrM1.00, hfemfrsrM1.a0, hfemfrsrM1.b1 |
D090227.2 | HFE/NFOV/M1 - Over-ranging data | hfenfov2chM1.b1 |
D090310.2 | HFE/MWRHF/M1 - Elevated noise in 150 GHz data | hfemwrhfM1.b1 |
D090311.3 | HFE/MWR/M1 - Missing data | hfemwrlosM1.b1, hfemwrtipM1.a1 |
D090512.1 | HFE/MET/S1 - Barometer missing | hfemetS1.b1 |
D090512.2 | HFE/MET/S1 - Optical Rain Gage Failed | hfemetS1.b1 |
D090512.3 | HFE/MET/S1 - Wind Data Incorrect | hfemetS1.b1 |
D091007.1 | HFE/ECOR/M1 - Flux Data Incorrect For Some Wind Directions | hfe30ecorM1.b1 |
D100216.5 | HFE/VCEIL/M1 - Reprocess: Incorrect serial_number and sum_backscatter fields | hfevceil25kM1.b1 |
D100225.2 | HFE/VCEIL/S1 - Incorrect serial_number and sum_backscatter fields | hfevceil25kS1.b1 |
D100729.4 | HFE/WACR/M1 - Reprocessed: Reflectivity and Height Offsets | hfewacrM1.b1, hfewacrspeccmaskcopolM1.a0, hfewacrspeccmaskxpolM1.a0 |
D101020.3 | HFE/AOS/M1 - Data processing problem | hfeaosM1.a1, hfenoaaaosM1.b1, hfenoaaaosavgM1.b1 |
D111122.2 | HFE/AOS/M1 - CPC and CCN data questionable | hfeaosccnM1.a1, hfenoaaaosM1.b1 |
D130718.7 | HFE/TSI/M1 - Data processing problem | hfetsiskycoverM1.b1 |
D131016.1 | HFE/WACR/M1 - WACR antenna diameter incorrect | hfewacrspeccmaskcopolM1.a0, hfewacrspeccmaskxpolM1.a0 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/06/2008 | 0000 | 09/26/2008 | 2359 |
10/01/2008 | 0000 | 10/06/2008 | 1500 |
10/16/2008 | 0201 | 10/16/2008 | 2359 |
10/20/2008 | 0000 | 10/23/2008 | 2359 |
Subject: | HFE/MWR/M1 - Insufficient calibration stability |
DataStreams: | hfemwrlosM1.b1, hfemwrtipM1.a1 |
Description: | The noise diode temperature suddenly jumped to > 60 C after a power outage. Following additional power problems the noise diode injection temperature drifted fast and the radiometer was not able to calibrate properly. Data during the indicated time periods are poorly calibrated and sometimes erratic. Users should be aware that the accuracy of the measurements is dramatically degraded. Users can use the microwave profiler (MWRP) data to supplement the MWR data. |
Measurements: | hfemwrlosM1.b1:
hfemwrtipM1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/05/2008 | 0400 | 10/12/2008 | 0230 |
Subject: | HFE/ECOR/M1 - Sonic failure |
DataStreams: | hfe30ecorM1.b1 |
Description: | The sonic datastream were "garbled", possibly associated with a serial line damage to the LI-7500 serial port or the Versalogic SBC serial port. Garbled data condition existed through 10/09/08 0030 GMT followed by missing data through 10/12/08 0230 GMT. |
Measurements: | hfe30ecorM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/19/2008 | 0000 | 12/28/2008 | 2159 |
Subject: | HFE/MET/M1 - Wind speed data contain offset due to induced voltage |
DataStreams: | hfemetM1.b1 |
Description: | The marine model of the RM Young wind sensor needs twisted pair shielded cable. The manufacturer did not originally supply the pigtail with twisted pair shielded cable. Use of twisted pair shielded cable for the rest of the cable run to the logger was also not specified. This caused an induced voltage in the wind speed line from the wind direction excitation. The induced voltage varied from sensor to sensor and probably changed anytime the cable was replaced or parts of the wind sensor were repaired or replaced. The induced voltage has been seen to vary from 0.15 m/s to as much as 1.08 m/s. |
Measurements: | hfemetM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/04/2008 | 1229 | 10/02/2008 | 2340 |
Subject: | HFE/MWRHF/M1 - 150-GHz data drop out |
DataStreams: | hfemwrhfM1.b1 |
Description: | The sky brightness temperature at 150 GHz (tbsky150) dropped to zero at 12:29 GMT on 20080804 and stayed flat lined until 23:40 GMT on 20081002. |
Measurements: | hfemwrhfM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/06/2008 | 1717 | 07/24/2008 | 0000 |
Subject: | HFE/AOS/M1 - No sub 1 micron data |
DataStreams: | hfeaosM1.a1 |
Description: | The aerosol size switching impactors were stuck in the sub 10 micron mode. So all aerosol is sub 10 um. |
Measurements: | hfeaosM1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/19/2008 | 0000 | 05/29/2008 | 0429 |
Subject: | HFE/AOS/M1 - Humidifier failure |
DataStreams: | hfeaosM1.a1 |
Description: | The humidifier either wasn't scanning or the wet nephelometer was flooded with water. |
Measurements: | hfeaosM1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/19/2008 | 0000 | 07/22/2008 | 0450 |
Subject: | HFE/AOS/M1 - CPC data missing |
DataStreams: | hfeaosM1.a1 |
Description: | The CPC wasn't installed until July 22nd when the mentor visited the site. |
Measurements: | hfeaosM1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/08/2008 | 0320 | 07/25/2008 | 0429 |
Subject: | HFE/AOS/M1 - CCN missing |
DataStreams: | hfeaosccnM1.a1 |
Description: | A power regulator on the CCN circuit board failed. The mentor replaced it and it was up and working on 7/25/2008. |
Measurements: | hfeaosccnM1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/23/2008 | 0155 | 12/28/2008 | 2300 |
Subject: | HFE/AOS/M1 - PSAP data missing |
DataStreams: | hfeaosM1.a1 |
Description: | The PSAP was disconnected during this time period. |
Measurements: | hfeaosM1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/18/2008 | 0000 | 12/28/2008 | 0000 |
Subject: | HFE/MPL/M1 - Frosting/Condensation |
DataStreams: | hfemplpolM1.b1, hfemplpolavgM1.c1, hfemplpolavgM1.s1 |
Description: | On various days during the China deployment, condensation accumulated on the view port window of the MPL and compromised its capability to detect clouds. This problem most often occurred during nighttime hours from May through early September. During the listed times, cloud retrievals and aerosol profiles should be considered doubtful or in error. The dates/times of occurrence are: 16:00-23:59 GMT on 05/18 17:00-22:00 GMT on 05/23 20:00-22:00 GMT on 05/25 15:00-23:59 GMT on 06/07 17:00-23:59 GMT on 06/08 15:00-23:00 GMT on 06/09 14:00-18:00 GMT on 06/18 18:00-21:00 GMT on 06/21 14:00-16:00 GMT on 06/23 16:00-21:00 GMT on 06/27 17:00-20:00 GMT on 06/28 22:00 GMT on 06/29 19:00-23:00 GMT on 06/30 13:30-22:30 GMT on 07/02 16:00-17:30 GMT on 07/03 20:30-22:00 GMT on 07/03 21:30-22:30 GMT on 07/05 13:00-22:00 GMT on 07/06 17:00-18:00 GMT on 07/07 21:00-22:30 GMT on 07/07 16:00-23:59 GMT on 07/10 11:00-23:00 GMT on 07/11 18:00-23:00 GMT on 07/12 15:00-16:00 GMT on 07/13 18:00-23:59 GMT on 07/14 18:00-21:00 GMT on 07/15 17:30-23:00 GMT on 07/16 17:00-23:00 GMT on 07/17 13:00-23:30 GMT on 07/20 18:00-23:00 GMT on 07/24 21:00-23:00 GMT on 07/25 21:00-22:30 GMT on 07/27 12:00-23:59 GMT on 08/02 16:00-21:30 GMT on 08/03 16:00-23:00 GMT on 08/04 14:00-22:30 GMT on 08/05 19:00-23:00 GMT on 08/07 19:00-21:30 GMT on 08/08 15:00-23:30 GMT on 08/10 17:30-23:30 GMT on 08/12 14:00-15:00 GMT on 08/14 16:30-22:30 GMT on 08/14 21:30-22:30 GMT on 08/17 12:00-23:59 GMT on 08/18 12:00-13:30 GMT on 08/19 20:00-23:30 GMT on 08/19 15:00-23:59 GMT on 08/20 11:00-23:59 GMT on 08/22 11:00-23:30 GMT on 08/23 12:00-23:30 GMT on 08/25 13:00-23:30 GMT on 08/26 16:30-23:59 GMT on 08/27 17:00-23:00 GMT on 08/31 15:00-23:59 GMT on 09/01 15:00-20:00 GMT on 09/02 19:30-23:59 GMT on 09/05 16:30-22:30 GMT on 09/09 19:30-23:59 GMT on 09/12 20:30-23:59 GMT on 09/15 14:00-16:30 GMT on 09/16 19:00-23:59 GMT on 09/16 20:30-23:59 GMT on 10/29 22:00-23:59 GMT on 11/01 20:00-23:59 GMT on 11/23 00:00-02:00 GMT on 11/24 |
Measurements: | hfemplpolavgM1.c1:
hfemplpolavgM1.s1:
hfemplpolM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/16/2008 | 0000 | 12/28/2008 | 2359 |
Subject: | HFE/SKYRAD/M1 - IRT bias |
DataStreams: | hfeskyrad60sM1.b1 |
Description: | The sky temperatures exhibited a positive bias compared to AERI, especially when < 230K. This is indicative of an incorrect emissivity setting (to compensate for the gold mirror) or a poor calibration. A similar problem with the same instrument occurred during the FKB deployment that was attributed to water vapor. |
Measurements: | hfeskyrad60sM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/09/2008 | 0000 | 06/04/2008 | 0310 |
08/18/2008 | 0000 | 08/28/2008 | 2359 |
Subject: | HFE/MWRHF/M1 - Frosting/Condensation |
DataStreams: | hfemwrhfM1.b1 |
Description: | The heater module was installed on 6/4/2008. Before this time there is condensation on the window during night time and early morning. On 8/18 the heater appears to have failed and nighttime condensation re-occurred on the radome during conditions of high humidity. Users can identify the segments affected by observing a smooth steady increase in the brightness temperature (BT). BT values can increase to more than 250 K and then smoothly decrease. The RH during these events is usually above 70%. Users should disregard data affected by condensation. |
Measurements: | hfemwrhfM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/09/2008 | 0500 | 12/28/2008 | 2359 |
Subject: | HFE/MWRHF/M1 - Calibration updates |
DataStreams: | hfemwrhfM1.b1 |
Description: | The MWRHF calibration algorithm updates the calibration parameters every time a new successful tip curve is acquired. This results in small jumps (1-2 K) in the brightness temperatures each time calibration is updated. During times of frequent calibrations the data appear discontinuous with short data segments interrupted by small jumps. |
Measurements: | hfemwrhfM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/28/2008 | 0000 | 08/04/2008 | 0300 |
Subject: | HFE/MWRHF/M1 - Rain sensor failure |
DataStreams: | hfemwrhfM1.b1 |
Description: | The rain sensor failed and the rain flag was always on. When the rain flag is on the radiometer does not perform tip curves. The rain sensor was replaced 8/4. |
Measurements: | hfemwrhfM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/19/2008 | 0000 | 12/28/2008 | 2159 |
Subject: | HFE/MET/M1 - Intermittent barometer failure |
DataStreams: | hfemetM1.b1 |
Description: | Intermittent barometer failure occurred throughout the deployment. We were unable to pinpoint the cause of the failure. Typically one or two minutes of missing data occurred every few days. Since pressure data is typically invariant over 1 minute, linear interpolation should be fine to fill in missing data. |
Measurements: | hfemetM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/19/2008 | 0000 | 12/28/2008 | 2159 |
Subject: | HFE/MET/M1 - Intermittent PWD data |
DataStreams: | hfemetM1.b1 |
Description: | The Present Weather Detector had intermittent missing values throughout this deployment. Missing values occurred almost everyday, usually just one or two minutes per day. |
Measurements: | hfemetM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/09/2008 | 2108 | 11/09/2008 | 2304 |
11/27/2008 | 1614 | 11/27/2008 | 2331 |
12/04/2008 | 1955 | 12/04/2008 | 2351 |
12/05/2008 | 0946 | 12/06/2008 | 0013 |
12/06/2008 | 1424 | 12/06/2008 | 2322 |
12/14/2008 | 1500 | 12/14/2008 | 1532 |
12/14/2008 | 1712 | 12/14/2008 | 1726 |
12/14/2008 | 1848 | 12/15/2008 | 0052 |
12/21/2008 | 0657 | 12/22/2008 | 0232 |
12/22/2008 | 0408 | 12/23/2008 | 0043 |
12/23/2008 | 1754 | 12/24/2008 | 0006 |
11/09/2008 | 1920 | 11/09/2008 | 1956 |
Subject: | HFE/MET/M1 - ORG measuring ice crystals or fog |
DataStreams: | hfemetM1.b1 |
Description: | The ORG was measuring consistent values for long periods of time. Typically this is indicative of fog, ice crystals in the air or poor performance of the lens heaters. |
Measurements: | hfemetM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/19/2008 | 0000 | 12/28/2008 | 2359 |
Subject: | HFE/MET/M1 - Induced voltage on wind speed sensor cable |
DataStreams: | hfemetM1.b1 |
Description: | The cable for the wind monitor is not a twisted pair shielded cable. This caused an induced voltage on the wind sensor wires from the wind direction measurement excitation voltage. A small offset is added into the wind speeds. This value varies. Most frequently the values of 0.49, 0.588 and 0.686 m/s were added into the wind speed. On 11/27/2008 the value jumped to 0.98 m/s for most of the day. |
Measurements: | hfemetM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/01/2008 | 0000 | 09/30/2008 | 2359 |
Subject: | HFE/MWRP/M1 - Reprocess: Bias in LWP retrievals |
DataStreams: | hfemwrpM1.b1 |
Description: | Since local radiosondes were not available, radiosondes from a different site were used to develop retrieval coefficients. LWP retrievals are biased in the summer months (June-September). Data in May and December are not affected. Additional analysis will be conducted to derive new retrieval coefficients and the data will be reprocessed. |
Measurements: | hfemwrpM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/26/2008 | 2200 | 10/13/2008 | 0330 |
Subject: | HFE/MFRSR/M1 - Shading problem |
DataStreams: | hfemfrsrM1.00, hfemfrsrM1.a0, hfemfrsrM1.b1 |
Description: | It looks like there could be a shading problem beginning on 20080826 that lasts until 20081013. Affected data range from sunrise until about 0400 UTC. |
Measurements: | hfemfrsrM1.b1:
hfemfrsrM1.a0:
hfemfrsrM1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/18/2008 | 0315 | 08/18/2008 | 0415 |
Subject: | HFE/NFOV/M1 - Over-ranging data |
DataStreams: | hfenfov2chM1.b1 |
Description: | The instrument was incorrectly installed with an incorrect range setting in the logger program. The program for lamp calibrating the instrument was used, and not the operational program. The scale ranges are different, and this resulted in over-ranging conditions when the signal exceeded the upper end of the measurement scale. Affected times are centered around solar noon, nominally +/- one-hour around solar noon. This lasted until mid-Aug, when the highest signals were no longer exceeding the logger range. |
Measurements: | hfenfov2chM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/02/2008 | 2341 | 12/28/2008 | 2359 |
Subject: | HFE/MWRHF/M1 - Elevated noise in 150 GHz data |
DataStreams: | hfemwrhfM1.b1 |
Description: | The noise level of the 150 GHz channel was about 4 times higher than expected, likely due to failure of the noise diode. Disregard the 150 GHz data. |
Measurements: | hfemwrhfM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/06/2008 | 1501 | 10/16/2008 | 0200 |
10/17/2008 | 0000 | 10/19/2008 | 2359 |
10/24/2008 | 0000 | 10/26/2008 | 2359 |
11/09/2008 | 0000 | 12/28/2008 | 0000 |
Subject: | HFE/MWR/M1 - Missing data |
DataStreams: | hfemwrlosM1.b1, hfemwrtipM1.a1 |
Description: | Data are missing and unrecoverable. |
Measurements: | hfemwrlosM1.b1:
hfemwrtipM1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/20/2008 | 0000 | 07/28/2008 | 0905 |
Subject: | HFE/MET/S1 - Barometer missing |
DataStreams: | hfemetS1.b1 |
Description: | All spare barometers and the working barometer for this supplemental site were damaged during shipment. They were sent in for repair and recalibration. |
Measurements: | hfemetS1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/20/2008 | 0000 | 10/22/2008 | 2359 |
Subject: | HFE/MET/S1 - Optical Rain Gage Failed |
DataStreams: | hfemetS1.b1 |
Description: | All data collected by the ORG is of no use. The ORG had failed and any data collected was not indicative of the current weather. |
Measurements: | hfemetS1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/18/2008 | 1158 | 08/19/2008 | 0518 |
Subject: | HFE/MET/S1 - Wind Data Incorrect |
DataStreams: | hfemetS1.b1 |
Description: | The wind sensor became disconnected and no wind speed or direction data were collected. |
Measurements: | hfemetS1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/08/2008 | 0000 | 12/28/2008 | 2359 |
Subject: | HFE/ECOR/M1 - Flux Data Incorrect For Some Wind Directions |
DataStreams: | hfe30ecorM1.b1 |
Description: | For some wind directions the horizontal fetch was not representative of the fields surrounding the AMF. Therefore, for the wind direction range 191-349 degrees, the fluxes are affected by insufficient fetch, and surfaces, buildings, and vegetation that are not similar to the local field conditions. |
Measurements: | hfe30ecorM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/08/2008 | 0000 | 12/28/2008 | 2359 |
Subject: | HFE/VCEIL/M1 - Reprocess: Incorrect serial_number and sum_backscatter fields |
DataStreams: | hfevceil25kM1.b1 |
Description: | Attribute serial_number: In most cases, this field is not representative of the actual serial number of the instrument because the value did not change when an instrument changed locations or was replaced with a spare. Variable sum_backscatter: An out-of-range condition for the "sum of detected and normalized backscatter" was reported as 0 instead of missing (-9999). The valid range is 0 - 0.0999 /srad. |
Measurements: | hfevceil25kM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/06/2008 | 0000 | 12/13/2008 | 2359 |
Subject: | HFE/VCEIL/S1 - Incorrect serial_number and sum_backscatter fields |
DataStreams: | hfevceil25kS1.b1 |
Description: | Attribute serial_number: In most cases, this field is not representative of the actual serial number of the instrument because the value did not change when an instrument changed locations or was replaced with a spare. Variable sum_backscatter: An out-of-range condition for the "sum of detected and normalized backscatter" was reported as 0 instead of missing (-9999). The valid range is 0 - 0.0999 /srad. |
Measurements: | hfevceil25kS1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/15/2008 | 0000 | 12/15/2008 | 2359 |
Subject: | HFE/WACR/M1 - Reprocessed: Reflectivity and Height Offsets |
DataStreams: | hfewacrM1.b1, hfewacrspeccmaskcopolM1.a0, hfewacrspeccmaskxpolM1.a0 |
Description: | The instrument vendor informed us of a range (height) offset of 13 m and provided updated reflectivity calibration. All values reported for 'Reflectivity' were approximately 3 dB too low. In addition, the Reflectivity in the first and fourth range gates (starting from the surface) needed to be further corrected by an additional 2.7 and -0.9 dB, respectively. The 'height' field values were 13.33 m too low. The data were reprocessed to correct these problems. The hfewacrM1.b1 data were reprocessed and archived in October 2010. The hfewacrspeccmaskcopolM1.a0 and hfewacrspeccmaskxpolM1.a0 data were reprocessed and archived in January and July 2012. |
Measurements: | hfewacrM1.b1:
hfewacrspeccmaskcopolM1.a0:
hfewacrspeccmaskxpolM1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/09/2008 | 0000 | 12/28/2008 | 0000 |
Subject: | HFE/AOS/M1 - Data processing problem |
DataStreams: | hfeaosM1.a1, hfenoaaaosM1.b1, hfenoaaaosavgM1.b1 |
Description: | The AOS data was reprocessed for the AMF, SGP and NSA sites. There was an error in the processing of the corrections for the PSAP absorption signal such that a low pass filter was implemented for the scattering data used in these corrections.The difference between the corrected and previous data is < 0.05 Mm-1 (below the instrument detection limit) and should not have a significant effect on the previous data. Data will be reprocessed at a later time when more significant changes to the data processing are implemented. |
Measurements: | hfenoaaaosM1.b1:
hfeaosM1.a1:
hfenoaaaosavgM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/25/2008 | 0000 | 12/28/2008 | 2300 |
Subject: | HFE/AOS/M1 - CPC and CCN data questionable |
DataStreams: | hfeaosccnM1.a1, hfenoaaaosM1.b1 |
Description: | The CPC slowly clogged and the signal declined until the instrument was cleaned at which point the signal would increase. The data is still a good relative measure of the daily changes in the CN concentration, but the absolute value may be too low. The mentor was unable to monitor the flow rate and operation in the CCN during operation. The relative changes in CCN with %ss are likely fine, but the absolute values may be too low or too high. Dust was prevalent at the site and likely contributed to the CCN signal such that large dust particles appeared as droplets. |
Measurements: | hfenoaaaosM1.b1:
hfeaosccnM1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/08/2008 | 0000 | 12/28/2008 | 2359 |
Subject: | HFE/TSI/M1 - Data processing problem |
DataStreams: | hfetsiskycoverM1.b1 |
Description: | Values of count_opaque and count_thin are reals but should be integers (units = pixels). |
Measurements: | hfetsiskycoverM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/15/2008 | 0000 | 12/15/2008 | 0200 |
Subject: | HFE/WACR/M1 - WACR antenna diameter incorrect |
DataStreams: | hfewacrspeccmaskcopolM1.a0, hfewacrspeccmaskxpolM1.a0 |
Description: | The global attribute 'antenna_diameter' has an incorrect value. The correct antenna diameter is 48" or 1.22 m. |
Measurements: | hfewacrspeccmaskcopolM1.a0:
hfewacrspeccmaskxpolM1.a0:
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