DQR ID | Subject | Data Streams Affected |
---|---|---|
D000210.1 | SGP/EBBR/E26 - Temperature from Left T/RH Probe Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000211.13 | SGP/EBBR/E26 - Left T/RH Probe Temperature Data Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000221.3 | SGP/EBBR/E26 - Right Aspirator Not Working | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000221.7 | SGP/EBBR/E26 - Anemometer Not Working, Wind Speed Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000225.1 | SGP/EBBR/26 - Low Battery Condition | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000301.9 | SGP/EBBR/E26 - Net Radiation Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000623.1 | SGP/EBBR/E26 - EBBR E26 Left Aspirator Not Working | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000623.10 | SGP/EBBR/E26 - EBBR E26 All Data Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000623.11 | SGP/EBBR/E26 - All Data Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000623.2 | SGP/EBBR/E26 - All Data Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000623.3 | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000623.5 | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000623.6 | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000623.7 | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000623.8 | SGP/EBBR/E26 - All Data Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000623.9 | SGP/EBBR/E26 - All Data Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000627.10 | SGP/EBBR/E26 - Left Air Temperature Periodically Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000627.11 | SGP/EBBR/E26 - Reference Temperature Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000627.4 | SGP/EBBR/E26 - Electronics Problem | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000627.9 | SGP/EBBR/E26 - Left Air Temperature Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D010605.20 | SGP EBBR E26 - Data Suspect, Low Battery Voltage | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D020628.6 | SGP/EBBR/E26 - 3-month Check | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D020724.48 | SGP/EBBR/E26 - Annual Calibration Changeout | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D051031.5 | SGP/ECOR/E21 - Missing data | sgp30ecorE21.b1 |
D060620.1 | SGP/ECOR/E21 - CO2 and Latent Heat Fluxes Incorrect | sgp30ecorE21.b1 |
D070402.1 | SGP/ECOR/E21 - Intermittent incorrect flux measurements | sgp30ecorE21.b1 |
D090122.1 | SGP/ECOR/E21 - Reprocess: 5 hour time offset | sgp30ecorE21.b1 |
D110513.10 | SGP/ECOR/E21 - TimeCheck Error | sgp30ecorE21.b1 |
D940211.1 | SGP/EBBR/E26 - Invalid data during Preventative Maintenance | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D940301.2 | SGP/EBBR/E26 - Winds, SM2 Invalid data 10/10/93 - 2/2/94 | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D940329.1 | SGP/EBBR/E26 - Wind Direction Sensor Malfunction | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D940606.1 | SGP/EBBR/E26 - Wind Speed Malfunction | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D940606.2 | SGP/EBBR/E26 - Wind Direction Sensor Failure | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D941021.11 | SGP/EBBR/E26 - Net Radiometer Hemisphere Changes | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D941212.1 | SGP/EBBR/E26 - Wind Direction Sensor Affect on Soil Moisture 2 | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D941221.1 | SGP/EBBR/E26 - T/RH Check | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D950308.3 | SGP/EBBR/E26 - Frozen Wind Speed Sensor | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D950626.10 | SGP/EBBR/E26 - Stopped Ventilation Fan | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D950626.19 | SGP/EBBR/E26 - Right Air Temperature Malfunction | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D950626.5 | SGP/EBBR/E26 - Frozen Wind Speed Sensor | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D950626.9 | SGP/EBBR/E26 - Frozen Wind Speed Sensor | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D950908.2 | SGP/EBBR/E26 - AEM not exchanging | sgp5ebbrE26.b1, sgp30ebbrE26.b1 |
D950921.4 | SGP/EBBR/E26 - AEM replacement | sgp5ebbrE26.b1, sgp30ebbrE26.b1 |
D951016.1 | SGP/EBBR/E26 - Battery Voltage Drop | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D951016.2 | SGP/EBBR/E26 - Net Radiometer Dome Punctured | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D951113.4 | SGP/EBBR/E26 - Right Tair Offscale | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D951116.3 | SGP/EBBR/E26 - Wind Speed Cups Frozen | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D960104.2 | SGP/EBBR/E26 - Wind Speed Cups Frozen | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D960104.8 | SGP/EBBR/E26 - Right Tair Offscale | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D960119.3 | SGP/EBBR/E26 - Right tair Offscale | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D960409.1 | SGP/EBBR/E26 - Right Air Temperature Malfunction | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D960501.4 | SGP/EBBR/E26 - Right Air Temp Malfunction | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D960508.10 | SGP/EBBR/E26 - 3-month check | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D961122.12 | SGP/EBBR/E26 - Wind Direction Sensor Failure | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D961122.13 | SGP/EBBR/E26 - Right Air Temperature Malfunction | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D961122.28 | SGP/EBBR/E26 - EBBR 3 Month Checks - 10 EFs | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D961122.4 | SGP/EBBR/E26 - Annual Calibration Changeout | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D961122.5 | SGP/EBBR/E26 - Wind Direction Sensor Failure | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D970330.6 | SGP/EBBR/E26 - Wind Direction Sensor Failure | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D971021.9 | SGP/EBBR/E26 - EBBR Biannual Checks | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D980117.22 | SGP/EBBR/E26- EBBR Frozen Wind Speed | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D980117.33 | SGP/EBBR/E26 - EBBR Net Radiometer Domes Pierced, Water Inside - Data Affected | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D980117.5 | SGP/EBBR/E26 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D980416.18 | SGP/EBBR/E26 - 3-Month Check | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D980529.17 | SGP/EBBR/E26 - Six Month Checks | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D990127.31 | SGP/EBBR/E26 - Wind Direction Data Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D990127.42 | SGP/EBBR/E26 - Wind Speed Data Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D990127.43 | SGP/EBBR - EBBR E26 Wind Speed Data Incorrect | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D990127.7 | SGP/EBBR/E26 - Battery Voltage Low, Data Incorrect | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D990129.5 | SGP/EBBR/E26 - Battery Voltage Low | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D990409.6 | SGP/EBBR/E26 - Calibration Changeout | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D990421.2 | SGP/EBBR/E26 - Incorrect Data | sgpebbrE26.00, sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D990622.6 | SGP/EBBR/E26 - Battery Wire Problem Causes Incorrect Data | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D990622.7 | SGP/EBBR/E26 - Battery Wire Problem Causes Questionable Data | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/11/1999 | 0000 | 06/29/1999 | 2145 |
Subject: | SGP/EBBR/E26 - Temperature from Left T/RH Probe Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The temperature from the left T/RH probe went offscale frequently. This temperature is used in the calculation of the vapor pressure. Therefore, top and bottom Thum measurements, left Thum, top and bottom vapor pressure measurements, vapor pressure gradients, and the resulting latent and sensible heat fluxes and bowen ratio were frequently incorrect for the period stated. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/11/1999 | 0000 | 06/29/1999 | 2145 |
Subject: | SGP/EBBR/E26 - Left T/RH Probe Temperature Data Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Left T/RH probe temperature is frequently offscale during the period. Examine the data (compare with the the T/RH right temperature) to determine which times are incorrect. Replacement of the probe on 29 June 1999 solved the problem. Affected data are: 5 minute: tair_bot, tair_top 15 minute: tair_l 30 minute: tair_bot, tair_top, e, h, bowen |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/2000 | 0230 | 01/27/2000 | 1700 |
Subject: | SGP/EBBR/E26 - Right Aspirator Not Working |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The right aspirator fan did not work during the period. The following values were therefore incorrect: 5 minute: tair_top, tair_bot, thum_top. thum_bot, hum_top, hum_bot, vp_top, vp_bot 15 minute: rr_thum_l, mv_hum_l, tair_l 30 minute: tair_top, tair_bot, thum_top. thum_bot, hum_top, hum_bot, vp_top, vp_bot, e, h, bowen |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/25/1999 | 0635 | 10/07/1999 | 1620 |
Subject: | SGP/EBBR/E26 - Anemometer Not Working, Wind Speed Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The anemometer was not working during this period. The following values were therefore incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/27/1999 | 0615 | 08/12/1999 | 1600 |
Subject: | SGP/EBBR/26 - Low Battery Condition |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | When battery voltage was less than 10.4 V DC during this period, all data should be considered to be incorrect. The cause of the problem was a broken trace on J-panel #3. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/25/1999 | 0700 | 10/07/1999 | 1700 |
Subject: | SGP/EBBR/E26 - Net Radiation Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The net radiometer top dome was broken and water had entered. Net radiation values are therefore incorrect during the period. The affected data are: 5 minute: q 15 minute: mv_q 30 minute: q, h, e |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/28/2000 | 2045 | 05/04/2000 | 1500 |
Subject: | SGP/EBBR/E26 - EBBR E26 Left Aspirator Not Working |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The data is suspect because of inadequate aspiration for the sensors in the left aspirated radiation shield. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/22/2000 | 1330 | 02/22/2000 | 1500 |
Subject: | SGP/EBBR/E26 - EBBR E26 All Data Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | All data was incorrect for an unknown reason. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/22/2000 | 2300 | 02/23/2000 | 0030 |
Subject: | SGP/EBBR/E26 - All Data Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | All data wqas incorrect for an unknown reason. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/06/2000 | 1630 | 04/06/2000 | 1700 |
Subject: | SGP/EBBR/E26 - All Data Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Data was incorrect because of Preventative Maintenance activities. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/13/2000 | 1215 | 04/13/2000 | 1415 |
Subject: | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Battery voltage below about 10.5 volts DC caused a number of the EBBR sensors to not measure correctly. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/13/2000 | 1745 | 04/13/2000 | 1800 |
Subject: | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Battery voltage less than 10.5 volts DC causes some sensors to measure incorrectly. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/14/2000 | 0615 | 04/14/2000 | 1530 |
Subject: | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Battery voltage less than 10.5 volts DC causes some sensors to measure incorrectly. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/16/2000 | 0845 | 04/16/2000 | 1500 |
Subject: | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Battery voltage less than 10.5 volts DC causes some sensors to make incorrect measurements. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/24/2000 | 0000 | 03/24/2000 | 0030 |
Subject: | SGP/EBBR/E26 - All Data Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | All data was incorrect for an unknown reason. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/15/2000 | 1030 | 03/15/2000 | 1430 |
Subject: | SGP/EBBR/E26 - All Data Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | All data was incorrect for an unknown reason. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/26/2000 | 1530 | 04/20/2000 | 1450 |
Subject: | SGP/EBBR/E26 - Left Air Temperature Periodically Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Left air temperature periodically was incorrect, causing the indicated measurements to be incorrect. The user will need to inspect the data to see when the left air temperature was incorrect (compare left with right air temperature or with the humidity probe temperature). |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/07/2000 | 0900 | 04/20/2000 | 1450 |
Subject: | SGP/EBBR/E26 - Reference Temperature Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The reference temperature sensor did not work during the indicated period, causing the indicated measurements to be incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/24/2000 | 0100 | 04/06/2000 | 1730 |
Subject: | SGP/EBBR/E26 - Electronics Problem |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Incorrect home signal indicates an electronic problem that affected the indicated measurements; this may have been a multiplexer #2 problem as all sensors affected are connected to that multiplexer and no sensors on multiplexer #1 were affected. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/25/2000 | 2145 | 02/26/2000 | 1130 |
Subject: | SGP/EBBR/E26 - Left Air Temperature Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Incorrect left air temperature caused the indicated measurements to be incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/03/2000 | 0600 | 03/07/2000 | 0901 |
03/24/2000 | 0100 | 04/06/2000 | 1701 |
06/19/2000 | 0830 | 06/19/2000 | 1431 |
06/19/2000 | 1630 | 06/19/2000 | 1731 |
06/19/2000 | 1900 | 06/19/2000 | 1901 |
06/20/2000 | 1430 | 06/20/2000 | 2201 |
06/30/2000 | 0945 | 06/30/2000 | 1346 |
07/02/2000 | 0930 | 07/02/2000 | 1601 |
07/03/2000 | 1230 | 07/03/2000 | 1316 |
Subject: | SGP EBBR E26 - Data Suspect, Low Battery Voltage |
DataStreams: | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The data measurements are suspect because of low battery voltage. Some measurements may be correct, but most are probably incorrect. Large home signals indicate very low battery voltage is present. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/1995 | 1400 | 10/13/1995 | 1700 |
Subject: | SGP/EBBR/E26 - 3-month Check |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during this period, at least, do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/17/1996 | 1400 | 07/17/1996 | 1430 |
Subject: | SGP/EBBR/E26 - Annual Calibration Changeout |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | On 16 November 1996 the EBBR changeout for annual calibration occurred at E26, Cement, OK. SEBS unit 2 was removed and unit 8 was installed. Data for half hours 1400 and 1430 GMT on 17 November is incorrect; 3 month calibration checks were being performed. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/05/2005 | 0330 | 06/08/2005 | 2100 |
07/23/2005 | 1700 | 07/27/2005 | 1930 |
08/09/2005 | 0100 | 08/16/2005 | 1930 |
09/07/2005 | 1630 | 09/15/2005 | 1530 |
01/18/2006 | 1500 | 01/26/2006 | 1800 |
05/05/2006 | 2330 | 05/11/2006 | 0400 |
06/01/2006 | 2130 | 06/06/2006 | 2030 |
09/20/2006 | 0430 | 09/27/2006 | 1830 |
Subject: | SGP/ECOR/E21 - Missing data |
DataStreams: | sgp30ecorE21.b1 |
Description: | Data are missing and unrecoverable. |
Measurements: | sgp30ecorE21.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/13/2006 | 1230 | 04/25/2006 | 1500 |
Subject: | SGP/ECOR/E21 - CO2 and Latent Heat Fluxes Incorrect |
DataStreams: | sgp30ecorE21.b1 |
Description: | |
Measurements: | sgp30ecorE21.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/01/2007 | 0800 | 08/29/2007 | 1730 |
Subject: | SGP/ECOR/E21 - Intermittent incorrect flux measurements |
DataStreams: | sgp30ecorE21.b1 |
Description: | At various times during the period, the LI-7500 CO2/H2O serial and analog signals from the LI-7500 were missing, but usually not at the same time. When the CO2/H2O serial datastream was missing, the Pressure and Temperature were missing; this did not, in itself, result in incorrect fluxes, as default values for pressure and temperature are automatically used. Fluxes were incorrect when the CO2/H2O analog datastream was missing; these times are identified by the qc checks. |
Measurements: | sgp30ecorE21.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/20/2009 | 2030 | 01/22/2009 | 1800 |
Subject: | SGP/ECOR/E21 - Reprocess: 5 hour time offset |
DataStreams: | sgp30ecorE21.b1 |
Description: | The system clock was mistakenly set to DST instead of GMT. All times are 5 hours behind. |
Measurements: | sgp30ecorE21.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/07/2010 | 0000 | 06/29/2010 | 2359 |
Subject: | SGP/ECOR/E21 - TimeCheck Error |
DataStreams: | sgp30ecorE21.b1 |
Description: | Starting on 2010-06-07 the E21 system clock started drifting until the problem was corrected on 2010-06-29, The maximum daily offset reported in the collection logs were: Jun 7 offset: -5.04 Jun 8 Offset: -267.449039 Jun 9 Offset: -541.038624 Jun 10 Offset: -814.469141 Jun 11 Offset: -1076.862114 Jun 12 Offset: -1350.330223 Jun 13 Offset: -1623.639335 Jun 14 Offset: -1897.047754 Jun 15 Offset: -2170.552312 Jun 16 Offset: -2422.130746 Jun 17 Offset: -2684.607495 Jun 18 - Jun 22 (unknown) Jun 23 Offset: -4204.730579 |
Measurements: | sgp30ecorE21.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/28/1993 | 1645 | 12/28/1993 | 1900 |
Subject: | SGP/EBBR/E26 - Invalid data during Preventative Maintenance |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | During a preventative maintenance visit the +12V DC supply to the wind direction sensor at E26, Cement, Ok was temporarily disconnected, resulting in invalid wind direction data for December 28, 1993 from 1645 through 1900 GMT. The following fields are therefore invalid for that period: 30 minute: wind_d, sigma_wd, res_ws 15 minute: mv_wind_d 5 minute: wind_d, sigma_wd, res_ws. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/1993 | 0000 | 02/02/1994 | 2359 |
Subject: | SGP/EBBR/E26 - Winds, SM2 Invalid data 10/10/93 - 2/2/94 |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Beginning October 10, 1993 the EBBR system at E26, Cement, OK began to have problems with outputs from soil moisture sensor number 2 and the wind direction sensor. This situation also occured in early 1993 and was eliminated by replacing the soil moisture sensor (after replacing the wind direction sensor did not help). This time, replacing the soil moisture sensor did not help, but the problem has not re-occured since the wind direction sensor was replaced on February 2, 1994. During periods of bad data the wind direction output is a constant 135 degrees and soil moisture two is offscale. Invalid data for a constant wind direction of 135 degrees is: 30 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_d 5 minute: res_ws, wind_d, sigma_wd. Invalid data for soil moisture 2 offscale is: 30 minute: sm2, c_shf2, cs2, ces2, g2, ave_shf, h, e 15 minute: r_sm2 5 minute: no data affected. Apparent cause of data loss, if known: Apparently an electronic problem in interfacing an intermittently malfunctioning wind direction sensor to the data acquisition system multiplexer, thereby affecting the other sensor (soil moisture 2) on that multiplexer pair. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/07/1994 | 1400 | 03/16/1994 | 1700 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Malfunction |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The wind direction sensor malfunctioned, outputting nearly a constant value, invalidating the following data values. 30 minute: wind_d, sigma_wd, res_ws 15 minute: mv_wind_d 5 minute: wind_d, sigma_wd, res_ws The first good data after the affected period was the 1700 GMT, 30 minute data on March 16, 1994. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/22/1994 | 2200 | 05/25/1994 | 1645 |
Subject: | SGP/EBBR/E26 - Wind Speed Malfunction |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | For an unknown reason, the wind speed sensor at Cement began to record very low wind speeds on a consistent basis, with most of the speeds recorded reflecting what appeared to be zero wind speed (calibration offset). When the sensor was replaced on 5/25/94, it was damaged, although this damage apparently did not occur until a thunderstorm around midnight (local time) May 24. The wind direction sensor was also damaged by the storm at the same time. At any rate, the wind speed data during the period listed should be considered questionable. The wind speed sensor was replaced on May 25, 1994 at 1639. Old sensor S/N K1032, New sensor S/N K1035. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/25/1994 | 0430 | 05/25/1994 | 1640 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Failure |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Apparently, a fairly severe thunderstorm passed over the Cement, OK EBBR early on May 25, 1994 (around midnight May 24, local time). The storm damaged the wind direction sensor and the wind speed sensor. Wind Direction and Sigma of Wind Direction data for the period listed should be considered incorrect. The sensors were replaced on May 25, 1994 at 1631. Old sensor S/N K3038, New sensor S/N K3040. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/14/1994 | 1600 | 09/28/1994 | 1515 |
Subject: | SGP/EBBR/E26 - Net Radiometer Hemisphere Changes |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The upper hemisphere of the net radiometer at the site was punctured allowing water to collect in the lower (and sometimes upper) section of the sensor. The punctures are most likely the result of migratory birds (a problem that we have experienced almost every year here at ANL also). The punctures (and water in some net radiometers) did not result in obvious invalidation of the data. Whether there is water in the lower hemisphere or not, a small puncture of the upper hemisphere would not have a major effect on the net radiation measurement. Significant amounts of water in the lower hemisphere should have a major effect on nighttime measurements particularly, although that effect is hard to detect in the data. The date when the puncture occurred is approximate - but is certainly no more than two weeks before the hemisphere was replaced. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/07/1994 | 0430 | 12/07/1994 | 0800 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Affect on Soil Moisture 2 |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | I have written a number of previous PIFs and DQRs about this same problem previously. This occurred most recently at E9, Ashton, KS in August 1994. The wind direction sensor is on the same data acquisition system multiplexer pair as soil moisture sensor 2. Sometimes a malfunctioning wind direction sensor (resulting in a constant wind direction of 135 degrees) will cause the soil moisture 2 measurement to be offscale. Between 0430 and 0800 GMT the wind direction sensor did not function properly at E22, Cordell, KS. As has often been the case, soil moisture measurements were affected for a shorter time period, from 0500 through 0730 GMT. The cause of this problem is unknown and only occurs on the multiplexer pair to which the wind direction sensor is connected, not on any other pair to which a soil moisture sensor is attached. None of the manufacturers of the applicable equipment can explain the problem. As done before, I will monitor the data for further occurrences of this condition; if the frequency of occurrence increases, further action will be taken. The following data and times are incorrect: Winds: 0430-0800 GMT 5 minute: wind_d, sigma_wd, res_ws 15 minute: mv_wind_d 30 minute: wind_d, sigma_wd, res_ws Soil Moisture 2: 0500-0730 GMT 15 minute: r_sm2 30 minute: sm2, c_shf2, cs2, ces2, g2, ave_shf, h, e |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/09/1994 | 1615 | 11/09/1994 | 1800 |
Subject: | SGP/EBBR/E26 - T/RH Check |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | During the month of November 1994, site operations personnel conducted field comparisons of the temperature and relative humidity sensors in the EBBRs and the HMI31 portable T/RH meter (with the removable probe). As is reflected in the home signal output, the automatic exchange mechanism was disabled in order to conduct the checks. Measurements were taken every 5 minutes, for a half hour each in the aspirated radiation shields (the HMI31 was inserted into the EBBR aspirated radiation shield to provide the same aspiration as the EBBR sensors received). Measurements of aspirator flow were also recorded. This information was provided to the mentor. The mentor then compared the field checks with the data recorded by the EBBRs. The periods of data and data fields that are incorrect because of the checks are listed below. Times are those at which the data are reported. Data Fields 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot 15 minute: rr_thum_r, rr_thum_l, mv_hum_r, mv_hum_l, tair_r, tair_l 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, bowen, e, h 5 minute: 1615, 1620, 1625, 1630, 1635, 1640, 1645, 1650, 1655, 1700, 1705, 1710, 1715, 1720, 1725, 1730, 1735 15 minute: 1615, 1630, 1645, 1700, 1715, 1730, 1745 30 minute: 1630, 1700, 1730, 1800 (EDITOR'S NOTE: The following analysis refers to all EBBRs installed in Nov 1994) Results of the T/RH comparisons: The combined accuracy of the HMI31 and EBBR temperature sensors (thermocouples or PRTDs) is +/- 0.4 degrees C. The combined accuracy of the HMI31 and EBBR RH sensors is +/- 4% for RH less than 80%, and +/- 6% for RH greater than 80%. The combined accuracy for each pair of EBBR sensors of the same type is essentially the same as the quantities stated above. All of the pairs of EBBR sensors show differences that fall within the stated combined accuracies. Although this sounds wonderful, a few of the differences are close to the combined accuracy, which, because of the small differences in temperature being measured (normally smaller than the magnitude of the combined accuracy) could lead to some incorrect estimation of sensible and latent heat flux. However, unless there would be substantial differences of calibration slope of two sensors in a pair, the switching of height of the sensors every 15 minutes by the automatic exchange mechanism will remove the offset between the sensors. The comparisons between the EBBR sensors and the HMI31 T/RH meter showed much larger differences. The range of differences were: -2.4 to 0.0 degrees for the thermocouples, -2.1 to 0.1 degrees for the RH probe PRTDs, and -6.6 to 6.7 percent for the RH sensors. Six Thermocouples indicated differences from the HMI31 greater than the combined accuracy. Seven PRTDs indicated differences from the HMI31 greater than the combined accuracy. Four RH sensors indicated differences from the HMI31 greater than the combined accuracy. The temperature differences (for both thermocouples and PRTDs) were nearly all of one sign; the HMI31 indicated the greater temperature, which may suggest a bias in the HMI31 temperature measurement, even though a dozen differences of +/- 0.2 degrees were measured. Four differences of zero and only one positive difference (out of 40) were measured. Thirteen of the 20 RH differences were positive (HMI31 indicating the lower RH), with the differences near the level of the combined accuracies being approximately 50% positive and 50% negative. It does not appear that the HMI31 has a RH bias. Plots of EBBR sensor/HMI31 differences as a function of time from the installation of the individual sensors (a range of 10 to 30 months in the field) shows no obvious pattern of sensor drift with time. This is encouraging. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/16/1995 | 1500 | 02/17/1995 | 1230 |
Subject: | SGP/EBBR/E26 - Frozen Wind Speed Sensor |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | On February 16, 1994 a frontal system deposited freezing rain in central Oklahoma that resulted in the EBBR wind speed instrument becoming frozen in place at Cement (E26) for part of two days. All 5, 15, and 30 minute data values indicated below are incorrect for all times within the period indicated. 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/11/1995 | 1230 | 04/12/1995 | 0615 |
04/12/1995 | 1315 | 04/12/1995 | 1400 |
Subject: | SGP/EBBR/E26 - Stopped Ventilation Fan |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | On April 11, 1995, a site operator discovered the right aspirator ventilation fan of the EBBR to be stopped. Inspection of the data indicates that this condition occurred during the two periods shown above; the fan apparently worked briefly inbetween the periods. Lack of ventilation of the temperature and relative humidity sensors attached to the AEM results in incorrect measurements of air temperature and relative humidity by the right aspirator probes, and therefore all quantities calculated from them, including sensible and latent heat fluxes, are incorrect as well. The quantities that are incorrect for the periods indicated are: 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, and vp_bot 15 minute: rr_thum_r, mv_hum_r, tair_r 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, bowen, e, h |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/09/1995 | 1705 | 05/16/1995 | 1900 |
05/24/1995 | 1930 | 05/28/1995 | 0100 |
05/28/1995 | 0130 | 06/01/1995 | 1630 |
06/05/1995 | 1730 | 06/05/1995 | 1900 |
06/06/1995 | 1530 | 06/06/1995 | 1900 |
Subject: | SGP/EBBR/E26 - Right Air Temperature Malfunction |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The right air temperature probe malfunctioned continuously during the periods of time indicated above as continuous. On May 16, 1995, by 1900 GMT, the probe was replaced (old S/N 92007, new S/N 92013). There was a complete loss of data between 1200 and 1900 GMT as Site Operations repaired a corroded battery terminal. For several days the right air temperature probe worked well. However, between May 24 and 28, the right air temperature probe malfunctioned continuously again. The right air temperature probe malfunctioned intermittently between May 28 and June 1, as well as during short periods on June 5 and 6. The cause of these latter periods is unknown; the time periods do not correspond with any Site Operations activities. During the intermittent periods the data that is not offscale should be viewed as questionable, as it is not always easy to detect what effect the malfunction might have had on that data. The malfunction of the right air temperature probe results in incorrect Bowen ratio, sensible heat flux, and latent heat flux during the periods indicated. The data values that are affected are: 5 minute: tair_top, tair_bot 15 minute: tair_r 30 minute: tair_top, tair_bot, bowen, e, h. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/06/1995 | 2205 | 03/07/1995 | 2230 |
Subject: | SGP/EBBR/E26 - Frozen Wind Speed Sensor |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | On March 6, 1995 freezing rain stopped the cups of the EBBR wind speed instrument at Cement, OK (E26). All 5, 15, and 30 minute data values indicated below are incorrect for the period listed. 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/17/1995 | 2000 | 03/19/1995 | 0500 |
03/19/1995 | 1905 | 04/12/1995 | 1430 |
Subject: | SGP/EBBR/E26 - Frozen Wind Speed Sensor |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | A broken lead on the EBBR wind speed instrument cable at Cement, OK (E26) resulted in the loss of wind speed data. It was nearly a month before the cable could be repaired and reinstalled. All 5, 15, and 30 minute data values indicated below are incorrect for the periods listed above. 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/26/1995 | 0345 | 09/12/1995 | 2000 |
Subject: | SGP/EBBR/E26 - AEM not exchanging |
DataStreams: | sgp5ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | On August 26, 1995 at approximately 0345 GMT the gears on the lower sprocket shaft of the AEM appear to have been damaged, causing the AEM to stop exchanging. The home signal values then remained at around -0.5 for both home_15 and Home_30. On August 29 site operations personnel removed the fuse (to prevent exchange) with the left aspirator in the down position. The AEM will remain in this condition until a replacement is available. Therefore, the calculations of Bowen ratio, latent heat flux, and sensible heat flux are incorrect for all times after August 26, 1995 at 0345 GMT. The data fields listed below are incorrect after this time: 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, Bowen, e, h. It is not possible to reliably calculate the Bowen ratio, e, and h using the 15 minute data. |
Measurements: | sgp30ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/26/1995 | 0345 | 09/12/1995 | 2000 |
Subject: | SGP/EBBR/E26 - AEM replacement |
DataStreams: | sgp5ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Please see DQR P950908.2, where this problem was first documented. On August 26, 1995 at approximately 0345 GMT the gears on the lower sprocket shaft of the AEM appear to have been damaged, causing the AEM to stop exchanging. The home signal values then remained at around -0.5 for both home_15 and Home_30. On August 29 site operations personnel removed the fuse (to prevent exchange) with the left aspirator in the down position. On 12 September 1995 the AEM was replaced at 1959 GMT (old S/N 92004, new S/N 92008) and is functioning properly. Calculations of Bowen ratio, latent heat flux, and sensible heat flux are incorrect for all times during the period above. The data fields listed below are incorrect during the period: 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, Bowen, e, h. It is not possible to reliably calculate the Bowen ratio, e, and h using the 15 minute data. |
Measurements: | sgp30ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/27/1995 | 2100 | 10/13/1995 | 1230 |
Subject: | SGP/EBBR/E26 - Battery Voltage Drop |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Shortly after the PM visit on September 26, 1995 the EBBR battery voltage at E26, Cement, OK declined to lower than acceptable levels. During the October 13, 1995 PM visit the battery was replaced. I do not know the specifics of why the battery voltage declined so suddenly, but failure of one or more of the battery cells is a possibility. I have not received the site operations log of the PM visit yet. The voltage dropped to 10 volts at night. At various times, soil temperature, soil heat flux plate output, and atmospheric pressure (at least) were not reported correctly by the CR10 datalogger. Amazingly, the AEM continued to work and reported millivolt outputs that did not fall below the acceptable ranges. All data between 2100 GMT on September 26, 1995 and 1230 GMT on October 13, 1995 should be considered suspect, particularly when the battery voltage fell below 11 volts (every nighttime). This general caution is issued because incorrect reporting of data also took place during times when the battery voltage was reported as 12 Volts, a normally acceptable level; the reason for this behavior is unknown. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/12/1995 | 0000 | 10/13/1995 | 1230 |
Subject: | SGP/EBBR/E26 - Net Radiometer Dome Punctured |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The upper dome of the net radiometer was punctured sometime between the PM visits of September 12 and 26, 1995. After the puncture, water collected in the top hemisphere. The water was removed on September 26, but a replacement dome was not available. The dome was replaced during the PM visit on October 13, 1995. The puncture and water did not result in obviously incorrect data. I cannot tell when the puncture occurred from the data. The data, particularly during the two weeks between September 12 and 26, 1995, should be considered suspect. Suspect net radiation data results in the latent heat flux and sensible heat flux also being suspect. Suspect data then includes: 5 minute: q 15 minute: mv_q 30 minute: q, e, h. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/01/1995 | 1545 | 11/01/1995 | 1845 |
Subject: | SGP/EBBR/E26 - Right Tair Offscale |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | On 1 November 1995 at E26, Cement, OK EBBR the right thermocouple output went offscale for a few hours. The cause for this is unknown and the sensor recovered fully. Incorrect data for the period above includes: 5 minute: tair_top, tair_bot 15 minute: tair_r, tair_l 30 minute: tair_top, tair_bot, bowen, h, e |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/11/1995 | 0240 | 11/11/1995 | 1505 |
Subject: | SGP/EBBR/E26 - Wind Speed Cups Frozen |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Freezing rain, snow, and below freezing conditions during the night of 10-11 November 1995 resulted in the wind speed sensor cups becoming frozen in a stopped state at E26, Cement, OK on early 11 November 1995. When temperatures rose to almost freezing under cloudless skies later in the day, the ice thawed and the cups were free to turn again. Measurements affected by the stalled wind speed sensor include: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/1995 | 2110 | 12/19/1995 | 1425 |
Subject: | SGP/EBBR/E26 - Wind Speed Cups Frozen |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Freezing rain, snow, and below freezing conditions during 18-19 January 1995 caused the wind speed sensor cups to freeze in a stopped state at E26, Cement, OK on 18 January 1995. When temperatures rose to above freezing on 19 January, the ice thawed and the cups turned freely again. Measurements affected by the stalled wind speed sensor include: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/26/1995 | 1630 | 12/31/1995 | 1930 |
Subject: | SGP/EBBR/E26 - Right Tair Offscale |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | On 26 and 31 December 1995 at E26, Cement, OK EBBR the right thermocouple output went offscale. The cause for this is unknown and the sensor recovered fully. Five minute data would need to be inspected during the periods above for incorrect five minute values. Site Operations has been asked to check the sensor connections. Incorrect data for the period indicated includes: 5 minute: tair_top, tair_bot 15 minute: tair_r 30 minute: tair_top, tair_bot, bowen, h, e |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/1996 | 1515 | 01/05/1996 | 0430 |
01/07/1996 | 2015 | 01/07/1996 | 2330 |
01/08/1996 | 1545 | 01/09/1996 | 1330 |
01/09/1996 | 2000 | 01/09/1996 | 2030 |
Subject: | SGP/EBBR/E26 - Right tair Offscale |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | On five days in January 1996 at E26, Cement, OK EBBR the right thermocouple output went offscale. The cause for this is unknown, although poor probe connections are common. Site Operation personnel tightened the probe connections in mid January. Five minute data would need to be inspected during the periods indicated for incorrect five minute values. Incorrect data for the period indicated includes: 5 minute: tair_top, tair_bot 15 minute: tair_r 30 minute: tair_top, tair_bot, bowen, h, e The data are not recoverable from other measurements. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/1996 | 1715 | 04/01/1996 | 1830 |
Subject: | SGP/EBBR/E26 - Right Air Temperature Malfunction |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The right air temperature probe malfunctioned and produced incorrect data during the period of time indicated above. The cause of the problem is unknown. The right air temperature probe appears to be working well presently. The malfunction of the right air temperature probe results in incorrect Bowen ratio, sensible heat flux, and latent heat flux during the period above. The data values that are affected are: 5 minute: tair_top, tair_bot 15 minute: tair_r (1715-1830 GMT values) 30 minute: tair_top, tair_bot, bowen, e, and h (1730-1830 GMT values) |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/23/1996 | 1500 | 04/23/1996 | 2115 |
Subject: | SGP/EBBR/E26 - Right Air Temp Malfunction |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The right air temperature probe malfunctioned and produced incorrect data during the period of time indicated above. The probe (S/N 92013) was replaced by Site Operations on 23 April 1996 at 2115 GMT with S/N 92002. The malfunction of the right air temperature probe results in incorrect Bowen ratio, sensible heat flux, and latent heat flux during the period indicated. The data values that are affected are: 5 minute: tair_top, tair_bot 15 minute: tair_r (1515-2115 GMT values) 30 minute: tair_top, tair_bot, bowen, e, and h (1530-2130 GMT values) |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/09/1996 | 1820 | 04/09/1996 | 2000 |
Subject: | SGP/EBBR/E26 - 3-month check |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during this period, at least, do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. The period of incorrect data for the EBBR is listed; data times affected do not include the beginning time and do include the ending time (data files are denoted by the end time). |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/24/1996 | 1015 | 08/13/1996 | 1800 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Failure |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Wind Direction and resultant wind speed data for the period listed above is incorrect. Wind direction would not record outside 0 to 20 degrees. This is a common malfunction in this style of wind direction sensor. The sensor was replaced on 13 August 1996. The old sensor S/N was K3038 and new sensor is S/N K3033. The affected data values are: 5 minute: wind_d, sigma_wd, res_ws 15 minute: mv_wind_d 30 minute: wind_d, sigma_wd, res_ws |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/12/1996 | 0000 | 07/05/1996 | 2359 |
Subject: | SGP/EBBR/E26 - Right Air Temperature Malfunction |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The right air temperature probe malfunctioned again and produced incorrect data (outside of range) during some of the period indicated above. The cause of the problem is unknown. On 18 June site operations tightened the connection to the J-panel and repaired a broken aspirator fan wire. However, incorrect data resumed shortly after site operations left the site. Data continued to be incorrect during some times through July 5. No incorrect data was recorded from July 6 through July 17. The EBBR unit was changed out on July 17, 1996. The times of incorrect right air temperatures are easy to recognize from the EBBR data, so the precise times of incorrect data are not enumerated here. Typically, the top and bottom air temperature is out of range, resulting in the sensible heat flux being zero. The malfunction of the right air temperature probe results in incorrect Bowen ratio, sensible heat flux, and latent heat flux. The data values that are affected are: 5 minute: tair_top, tair_bot 15 minute: tair_r 30 minute: tair_top, tair_bot, bowen, e, and h |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/24/1996 | 1550 | 10/24/1996 | 1613 |
Subject: | SGP/EBBR/E26 - EBBR 3 Month Checks - 10 EFs |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for periods indicated. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/16/1996 | 1500 | 07/16/1996 | 2230 |
Subject: | SGP/EBBR/E26 - Annual Calibration Changeout |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | On 16 November 1996 the EBBR changeout for annual calibration occurred at E26, Cement, OK. SEBS unit 2 was removed and unit 8 was installed. Between 1500 and 2230 GMT no data or incorrect data was collected; most of the data is missing. 3 month calibration checks were being performed. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/06/1996 | 2000 | 11/19/1996 | 1830 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Failure |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Wind Direction and resultant wind speed data for much of the period listed above is incorrect. Wind directions of 135, 0, or 360 would continue for extended periods. This behavior is indicative of a failed sensor. This is a common malfunction in this style of wind direction sensor. A work request has been submitted to site operations for replacement of the sensor. All values of 135, 0, and 360 should be considered to be incorrect during the period above. Furthermore, more incorrect data may occur until the sensor is replaced (by 6 December). The affected data values are: 5 minute: wind_d, sigma_wd, res_ws 15 minute: mv_wind_d 30 minute: wind_d, sigma_wd, res_ws |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/06/1996 | 2000 | 11/19/1996 | 1825 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Failure |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Wind Direction and Sigma of Wind Direction data for the period listed is incorrect. The wind direction sensor began to malfunction on 6 November, with the characteristic constant 135 degree output. At other times the output remained a nearly constant 230 to 240 degrees. On 16 November at 1819 GMT site operations replaced sensor S/N 3033 with S/N 3036. Apparently they left it aligned at north when they left the EF; output for the next few days was 0 or 360 degrees, until they returned on 19 November at 1825 GMT and gave the vane it's freedom. Affected fields are: 5 minute: wind_d, sigma_wd 15 minute: mv_wind_d 30 minute: wind_d, sigma_wd |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/23/1997 | 2008 | 04/23/1997 | 2050 |
Subject: | SGP/EBBR/E26 - EBBR Biannual Checks |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for periods indicated. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/07/1998 | 1950 | 01/08/1998 | 2230 |
Subject: | SGP/EBBR/E26- EBBR Frozen Wind Speed |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Wind speed cups were frozen during the indicated time periods. All 5, 15, and 30 minute data values indicated are incorrect for the periods listed. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/16/1997 | 2000 | 12/29/1997 | 1840 |
Subject: | SGP/EBBR/E26 - EBBR Net Radiometer Domes Pierced, Water Inside - Data Affected |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The upper dome of the EBBR net radiometers was punctured. After the puncture, water collected in the top and/or bottom dome. The water was removed and the dome was replaced during PM visits. In some cases, the puncture and water resulted in incorrect data. Comparison with net radiation values from surrounding EBBR sites and the SIRS is neccesary to determine if the EBBR net radiation data are correct or incorrect. It is often difficult to tell from the data when the punctures occurred, but they would have existed for no more than 2 weeks, since the domes are checked during each two-weekly PM visit. Incorrect net radiation data results in the latent heat flux and sensible heat flux also being incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/1998 | 0100 | 01/08/1998 | 2030 |
Subject: | SGP/EBBR/E26 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The EBBR AEM stopped exchanging because of icing at during this time period. The calculations of Bowen ratio, latent heat flux, and sensible heat flux are incorrect for the time period indicated. The other measurements listed are also incorrect for those times: |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/21/1997 | 2125 | 10/21/1997 | 2148 |
Subject: | SGP/EBBR/E26 - 3-Month Check |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for the period indicated. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/19/1998 | 1646 | 05/19/1998 | 1717 |
Subject: | SGP/EBBR/E26 - Six Month Checks |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | During EBBR 6 month checks (formally called 3 month checks) the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed just before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for the period indicated. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/1999 | 0835 | 01/08/1999 | 1600 |
Subject: | SGP/EBBR/E26 - Wind Direction Data Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The wind direction sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_d 30 minute: res_ws, wind_d, sigma_wd |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/21/1998 | 0705 | 12/24/1998 | 1630 |
01/08/1999 | 0315 | 01/09/1999 | 0600 |
Subject: | SGP/EBBR/E26 - Wind Speed Data Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/1999 | 0315 | 01/09/1999 | 0600 |
Subject: | SGP/EBBR - EBBR E26 Wind Speed Data Incorrect |
DataStreams: | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/09/1999 | 0200 | 01/14/1999 | 1830 |
Subject: | SGP/EBBR/E26 - Battery Voltage Low, Data Incorrect |
DataStreams: | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Battery voltages less than 10.4 volts occurred some of the time. All data should be considered incorrect when the voltage is less than 10.4 volts. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/30/1998 | 0300 | 12/30/1998 | 1300 |
Subject: | SGP/EBBR/E26 - Battery Voltage Low |
DataStreams: | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Battery voltage dropped below 10.4 volts. All data should be considered to be incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/1999 | 1415 | 04/02/1999 | 1645 |
Subject: | SGP/EBBR/E26 - Calibration Changeout |
DataStreams: | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The data from this period was either missing or incorrect during the calibration changeout of the EBBR unit. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/02/1999 | 1645 | 04/02/1999 | 1800 |
Subject: | SGP/EBBR/E26 - Incorrect Data |
DataStreams: | sgpebbrE26.00, sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | All data is incorrect for this time. This problem was related to changeout activities. |
Measurements: | sgpebbrE26.00:
sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/15/1999 | 1830 | 04/15/1999 | 1900 |
Subject: | SGP/EBBR/E26 - Battery Wire Problem Causes Incorrect Data |
DataStreams: | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The battery voltage dropped suddenly to 8 volts at 1900 GMT, making all data incorrect for that time. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/28/1999 | 2245 | 04/29/1999 | 0600 |
Subject: | SGP/EBBR/E26 - Battery Wire Problem Causes Questionable Data |
DataStreams: | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | The battery voltage dropped to less than 10.4 volts, causing all data to be suspect for the time period. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|