DQR ID | Subject | Data Streams Affected |
---|---|---|
D000210.1 | SGP/EBBR/E26 - Temperature from Left T/RH Probe Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000211.13 | SGP/EBBR/E26 - Left T/RH Probe Temperature Data Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000221.3 | SGP/EBBR/E26 - Right Aspirator Not Working | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000221.7 | SGP/EBBR/E26 - Anemometer Not Working, Wind Speed Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000225.1 | SGP/EBBR/26 - Low Battery Condition | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000301.9 | SGP/EBBR/E26 - Net Radiation Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000622.1 | SGP/EBBR/E26 - Reprocess Soil Moisture Off-Scale | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000623.1 | SGP/EBBR/E26 - EBBR E26 Left Aspirator Not Working | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000623.10 | SGP/EBBR/E26 - EBBR E26 All Data Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000623.11 | SGP/EBBR/E26 - All Data Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000623.2 | SGP/EBBR/E26 - All Data Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000623.3 | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000623.5 | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000623.6 | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000623.7 | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000623.8 | SGP/EBBR/E26 - All Data Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000623.9 | SGP/EBBR/E26 - All Data Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000627.10 | SGP/EBBR/E26 - Left Air Temperature Periodically Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000627.11 | SGP/EBBR/E26 - Reference Temperature Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000627.4 | SGP/EBBR/E26 - Electronics Problem | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000627.6 | SGP/EBBR/E26 - Soil Heat Flow #5 Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000627.7 | SGP/EBBR/E26 - Soil Heat Flow #1 Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000627.8 | SGP/EBBR/E26 - Soil Heat Flow #2 Large Negative | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000627.9 | SGP/EBBR/E26 - Left Air Temperature Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D010213.12 | SGP/EBBR/E26 - Wind Speed Iced | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D010605.20 | SGP EBBR E26 - Data Suspect, Low Battery Voltage | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.00, sgp5ebbrE26.b1 |
D010605.22 | SGP EBBR E26 - All Data Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.00, sgp5ebbrE26.b1 |
D010605.23 | SGP EBBR E26 - Soil Heat Flow #1 Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D010605.24 | SGP EBBR E26 - Soil Heat Flow #2 Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D010605.25 | SGP EBBR E26 - Soil Heat Flow #3 Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D010723.3 | SGP EBBR E26 - Soil Moisture #1 Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D010723.4 | SGP EBBR E26 - AEM Inbetween, Data Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D010723.5 | SGP EBBR E26 - Soil Heat Flow #5 Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D010723.7 | SGP EBBR E26 - Some Data Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D010723.8 | SGP EBBR E26 - Some Data Incorrect | sgp30ebbrE26.b1 |
D011127.34 | SGP EBBR E26 - Data Incorrect During 6 Month Checks | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D011206.1 | SGP EBBR E26 - Low Battery Voltage | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D011206.2 | SGP EBBR E26 - Battery Voltage Low | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D020628.6 | SGP/EBBR/E26 - 3-month Check | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D020716.18 | SGP/EBBR/E26 - 6 Month Checks | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D020717.37 | SGP/EBBR/E26 - Measurements Zero | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.00, sgp5ebbrE26.b1 |
D020717.38 | SGP/EBBR/E26 - Measurements Incorrect | sgp30ebbrE26.b1 |
D020717.39 | SGP/EBBR/E26 - Multiplexer 2 Failure From High Temperature | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D020724.48 | SGP/EBBR/E26 - Annual Calibration Changeout | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D021113.1 | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header | sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE18.b1, sgp30ebbrE19.b1, sgp30ebbrE2.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1 |
D021113.4 | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header | sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1 |
D030110.27 | SGP/EBBR/E26 - Data Incorrect during 6 month checks | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030117.26 | SGP/EBBR/E26 - Measurements zero following logger restart | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030117.27 | SGP/EBBR/E26 - Multiplexer Problem | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030117.28 | SGP/EBBR/E26 - Water in broken Net Radiometer Dome | sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030117.29 | SGP/EBBR/E26 - Battery Voltage Low | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030128.2 | SGP/EBBR/E26 - AEM Hung | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030128.3 | SGP/EBBR/E26 - Data zeros following logger restart | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030128.4 | SGP/EBBR/E26 - Left Air Temperature Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030514.8 | SGP/EBBR/E26 - E26 EBBR Soil Heat Flow #1 Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D030711.6 | SGP/EBBR/E26 -Right Air Temperature Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030712.23 | SGP/EBBR/E26 - 6 Month Checks | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030728.4 | SGP/EBBR/E26 - Soil Heat Flow #5 Large Positive | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D030919.11 | SGP/EBBR/E26 - Soil Storage Incorrect; Surface Fluxes Incorrect | sgp30ebbrE26.b1 |
D031103.1 | SGP/EBBR/E26 - AEM Home Signals Incorrect, Surface Fluxes Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D031204.21 | SGP/EBBR/E26 - 6 Month Checks | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D031211.3 | SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D031222.24 | SGP/EBBR/E26 - Wind Speed Sensor Frozen By Ice Storm | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D031222.25 | SGP/EBBR/E26 - Wind Direction Sensor Frozen By Ice Storm | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D040304.28 | SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D040304.29 | SGP/EBBR/E26 - Wind Direction Frozen Stopped By Ice | sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D040813.5 | SGP/EBBR/E26 - Soil Temperature #4 and Soil Heat Flow #4 Incorrect | sgp30ebbrE26.b1 |
D041222.1 | SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D041222.18 | SGP/EBBR/E26 - 6 Month Checks | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D041222.4 | SGP/EBBR/E26 - Low Battery Voltage - Many Measurements Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D041222.5 | SGP/EBBR/E26 - Most Measurements Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D050206.16 | SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice Storm | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D050207.12 | SGP/EBBR/E26 - Wind Direction Frozen Stopped By Ice Storm | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D050211.1 | SGP/EBBR/E26 - Aging Pressure Sensor Output Changes With Supply Voltage | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D050324.3 | SGP/EBBR/E26 - Incorrect soil type coefficients used | sgp30ebbrE26.b1 |
D050719.15 | SGP/EBBR/E26 - Improved EBBR CR10 Program | sgp30ebbrE26.b1 |
D051106.30 | SGP/EBBR/E26 - Average Soil Heat Flux Incorrect | sgp30ebbrE26.b1 |
D051112.9 | SGP/EBBR/E26 - metadata corrections | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D051222.1 | SGP/EBBR/E26 - Data Suspect During Low Supply Voltage | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D060501.26 | SGP/EBBR/E26 - Measurements Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D071001.1 | SGP/EBBR/E26 - Sensible and Latent Heat Fluxes Affected by bad temp sensor | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D090313.8 | SGP/EBBR/E26 - Wind Speed Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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 |
---|---|---|---|
07/17/1996 | 0000 | 04/01/1999 | 1410 |
Subject: | SGP/EBBR/E26 - Reprocess Soil Moisture Off-Scale |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | During numerous periods within the days listed above, individual soil moisture probes indicate small positive or else negative values when soil moisture is high (greater than 35%). This situation has occured since the present EBBR unit was installed on 17 July 1996. The cause of the problem is inadequate range in the calibration curve equation. Cement soil is somewhat unique amongst the EBBR sites, as the soil is very sandy and porous; it can hold a larger amount of water per volume than the other soils. This high a soil moisture cannot be obtained with the calibration soil used by REBS. Therefore, the soil moisture equations need to be manipulated to allow larger soil moistures to be calculated. Much of the data from January 1998 is corrupted by this problem, making changes in the equations prudent. The soil moisture data must be inspected by the data user to see when soil moisture values for one or more probes is inconsistent with the others. Recalculation of ave_shf, e, and h must be made using only the soil moisture sets with correct soil moisture values. Affected data values are (# for probe number): 15 minute: rr_sm# 30 minute: sm#, c_shf#, cs#, ces#, g#, ave_shf, e, h Sensible, latent, and soil heat fluxes can be recalculated using the soil probe sets that provide correct data. For example, if soil moisture 2 is incorrect, ave_shf = (g1 + g3 + g4 + g5)/4 e = -(q + ave_shf)/(1 +bowen) h = -(e + ave_shf +q), If soil moisture 2 and 4 are incorrect, ave_shf = (g1 + g3 + g5)/3 e = -(q + ave_shf)/(1 +bowen) h = -(e + ave_shf +q), If soil moisture 2, 4, and 5 are incorrect, ave_shf = (g1 + g3)/2 e = -(q + ave_shf)/(1 +bowen) h = -(e + ave_shf +q), etc. On 5 May 1998 at 1815 GMT a calibration coefficient was changed in the CR10 program as a result of a BCR by the mentor. This coefficient has helped reduce the least severe problems but has not eliminated problems from large negative soil moistures measured even once during the integration period. However, now the incorrect average soil heat flow, latent heat flux, and sensible heat flux are so large, negative or positive, that they cannot be mistaken as being correct. The EBBR unit was replaced with a recalibrated system on 1 April 1999. The previous unit experienced soil moisture problems the entire time (almost 3 years) that the system was installed because of the inadequacy of the soil moisture sensor calibrations. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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 |
---|---|---|---|
04/06/2000 | 1800 | 06/15/2000 | 1600 |
Subject: | SGP/EBBR/E26 - Soil Heat Flow #5 Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Soil Heat Flow #5 was incorrect, causing the indicated measurements to be incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/16/1999 | 0030 | 03/07/2000 | 1455 |
Subject: | SGP/EBBR/E26 - Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Soil Heat Flow #1 was incorrect, causing the indicated measurements to be incorrect. A broken sensor wire was at fault. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/03/2000 | 0600 | 03/07/2000 | 1455 |
Subject: | SGP/EBBR/E26 - Soil Heat Flow #2 Large Negative |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Soil Heat Flow #2 was large negative and incorrect for an unknown reason. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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 |
---|---|---|---|
12/25/2000 | 0600 | 12/28/2000 | 1145 |
Subject: | SGP/EBBR/E26 - Wind Speed Iced |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The anemometer was frozen stopped by freezing rain. Indicated data are 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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.00, sgp5ebbrE26.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 |
---|---|---|---|
09/06/2000 | 2230 | 09/06/2000 | 2231 |
09/10/2000 | 1430 | 09/10/2000 | 1431 |
10/16/2000 | 1500 | 10/16/2000 | 1501 |
10/23/2000 | 1900 | 10/23/2000 | 1901 |
10/26/2000 | 1530 | 10/26/2000 | 1601 |
10/27/2000 | 1430 | 10/27/2000 | 1501 |
01/02/2001 | 1600 | 01/02/2001 | 2201 |
01/03/2001 | 1530 | 01/03/2001 | 1631 |
Subject: | SGP EBBR E26 - All Data Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.00, sgp5ebbrE26.b1 |
Description: | All data was incorrect during these periods for unknown reasons. However, this tends to happen during preventative maintenance visits if sensors have to be changed out or tested and the datalogger program is reloaded, or if the battery voltage is low. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/16/1999 | 1700 | 03/03/2000 | 0931 |
Subject: | SGP EBBR E26 - Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Soil Heat Flow #1 was incorrect because of a bad electronic connection. Average surface heat flow, sensible heat flux, and latent heat flux are incorrect as a result; these can be re-calculated by using the remaining correct soil heat flows. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/18/2000 | 0330 | 02/19/2000 | 1131 |
03/04/2000 | 1500 | 03/07/2000 | 0901 |
Subject: | SGP EBBR E26 - Soil Heat Flow #2 Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Soil Heat Flow #2 was incorrect. Average soil heat flow, sensible heat flux, and latent heat flux were therefore also incorrect; these can be re-calculated from the remaining correct soil heat flows. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/15/2000 | 1500 | 06/19/2000 | 2201 |
11/05/2000 | 1900 | 11/16/2000 | 1601 |
11/30/2000 | 1600 | 12/03/2000 | 0731 |
12/14/2000 | 1600 | 12/16/2000 | 0301 |
Subject: | SGP EBBR E26 - Soil Heat Flow #3 Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Soil heat Flow #3 was incorrect (large negative). Therefore average soil heat flow, sensible heat flux, and latent heat flux were also incorrect; these can be re-calculated using the remaining correct soil heat flows. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/06/2000 | 1730 | 02/08/2001 | 1546 |
Subject: | SGP EBBR E26 - Soil Moisture #1 Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Soil Moisture #1 was a constant 33.7 and was incorrect. Latent and Sensible Heat fluxes were normally minimally affected. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/23/2000 | 0345 | 08/23/2000 | 0401 |
Subject: | SGP EBBR E26 - AEM Inbetween, Data Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | While the AEM was inbetween the correct measurement positions the measurements from the two levels were incorrect. The sensible and latent heat fluxes and Bowen ratio were therefore incorrect also. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/15/2000 | 1530 | 02/22/2001 | 1535 |
Subject: | SGP EBBR E26 - Soil Heat Flow #5 Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Soil Heat Flow #5 was large negative during this period. Therefore, calculated average soil heat flow, latent heat flux, and sensible heat flux were incorrect. These measurements can be recalculated from the use of measurements from only soil heat flow sensors #1-4. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/21/2000 | 2130 | 10/21/2000 | 2131 |
Subject: | SGP EBBR E26 - Some Data Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The reference temperature sensor malfunctioned, causing all associated measurements to be incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/10/2000 | 1500 | 09/10/2000 | 1501 |
11/02/2000 | 1600 | 11/02/2000 | 1601 |
01/03/2001 | 1700 | 01/03/2001 | 1701 |
Subject: | SGP EBBR E26 - Some Data Incorrect |
DataStreams: | sgp30ebbrE26.b1 |
Description: | Since soil temperature was not available for the previous half hour, soil energy storage could not be calculated properly for the indicated period. The individual soil heat storage from the five soil sets, average soil heat flow, sensible heat flux, and latent heat flux are therefore incorrect. |
Measurements: | sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/05/2001 | 1415 | 04/05/2001 | 1546 |
10/16/2001 | 1750 | 10/16/2001 | 1921 |
Subject: | SGP EBBR E26 - Data Incorrect During 6 Month Checks |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The data was incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/14/2000 | 1130 | 03/31/2001 | 2356 |
Subject: | SGP EBBR E26 - Low Battery Voltage |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | During the indicated the period the battery voltage often dropped to 10.4 volts or below. At voltages less than 10.5 volts none of the selected measurements can be considered to be correct. The battery charging capacity was insufficient to maintain voltage at night. If the battery voltage is less than 10.5 volts (see battery voltage in the 15 minute data files), do not use the data. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 08/23/2001 | 1530 |
Subject: | SGP EBBR E26 - Battery Voltage Low |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The battery voltage often dropped below 10.5 volts. All data for voltages below 10.5 volts should be considered to be incorrect. See the 15 minute data files, which contain the battery voltage, to determine when the data was incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/1995 | 1400 | 10/13/1995 | 1700 |
Subject: | SGP/EBBR/E26 - 3-month Check |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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 |
---|---|---|---|
05/02/2002 | 1500 | 05/02/2002 | 1531 |
Subject: | SGP/EBBR/E26 - 6 Month Checks |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The indicated measurements were incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/30/2002 | 1500 | 05/30/2002 | 1501 |
Subject: | SGP/EBBR/E26 - Measurements Zero |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.00, sgp5ebbrE26.b1 |
Description: | The measurements are often zero after a CR10 datalogger restart, as occurred here. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/30/2002 | 1530 | 05/30/2002 | 1531 |
Subject: | SGP/EBBR/E26 - Measurements Incorrect |
DataStreams: | sgp30ebbrE26.b1 |
Description: | Change of energy storage (CES) measurements (calculated from the change of soil temperature with time) are sometimes incorrect after a CR10 program restart because the beginning measurement of the averaging period is zero. Average soil heat flow, sensible heat flux, and latent heat flux were affected and cannot be recalculated. |
Measurements: | sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/01/2002 | 2115 | 06/30/2002 | 2356 |
Subject: | SGP/EBBR/E26 - Multiplexer 2 Failure From High Temperature |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Multiplexer 2 is failing during times of control box temperatures above 29 degrees C. The failure begins in the last channel and progresses to lower channels as the temperature increases. It has not yet been determined whether the failure is in the relays or a solid state component of the multiplexer. This condition is probably due to the aging of the device and the millions of cycles that this 10 year old device has made. More failures of this sort may occur in the future. A cure is being sought aside from replacement of the multiplexers to prevent the problem. The indicated measurements need to be inspected to determine which ones are usable. |
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: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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 |
---|---|---|---|
04/01/2001 | 0000 | 06/18/2003 | 2359 |
Subject: | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR |
DataStreams: | sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE18.b1, sgp30ebbrE19.b1, sgp30ebbrE2.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1 |
Description: | The units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in the EBBR 30 minute netcdf header have been incorrect from the beginning of processing the data into netcdf files. The correct units are MJ/m^3/C. This does not affect the data quality. |
Measurements: | sgp30ebbrE2.b1:
sgp30ebbrE26.b1:
sgp30ebbrE9.b1:
sgp30ebbrE22.b1:
sgp30ebbrE13.b1:
sgp30ebbrE7.b1:
sgp30ebbrE18.b1:
sgp30ebbrE12.b1:
sgp30ebbrE4.b1:
sgp30ebbrE15.b1:
sgp30ebbrE19.b1:
sgp30ebbrE20.b1:
sgp30ebbrE8.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/1993 | 1200 | 06/18/2003 | 1159 |
Subject: | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR |
DataStreams: | sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1 |
Description: | The units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in the EBBR 30 minute netcdf header have been incorrect from the beginning of processing the data into netcdf files. The correct units are MJ/m^3/C. This does not affect the data quality. (NOTE: The actual begin date of some of these data streams is as early as 7/4/93. This DQR applies to all 30m EBBR data.) |
Measurements: | sgp30ebbrE26.b1:
sgp30ebbrE9.b1:
sgp30ebbrE7.b1:
sgp30ebbrE4.b1:
sgp30ebbrE12.b1:
sgp30ebbrE15.b1:
sgp30ebbrE22.b1:
sgp30ebbrE13.b1:
sgp30ebbrE8.b1:
sgp30ebbrE20.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/27/2002 | 1605 | 11/27/2002 | 1635 |
Subject: | SGP/EBBR/E26 - Data Incorrect during 6 month checks |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Some of the measurements are incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/11/2002 | 1600 | 07/11/2002 | 1629 |
Subject: | SGP/EBBR/E26 - Measurements zero following logger restart |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Most of the measurements were zero, which normally happens after a datalogger restart. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/01/2002 | 0000 | 07/11/2002 | 1300 |
Subject: | SGP/EBBR/E26 - Multiplexer Problem |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | One of the multiplexers exhibited dropouts of the channels, beginning with the last channel at temperatures above about 30 C and moving backward through the channels as the temperature rose. High temperatures affected the switching speed of the multiplexer. This is the first time that this behavior has been documented in a Campbell Scientific multiplexer. The multiplexer had been in continuous field use for 10 years and had experienced probably more switching cycles than what is normally expected of the device in that period. The multiplexer was replaced to solve the problem. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/27/2002 | 0830 | 09/05/2002 | 1700 |
Subject: | SGP/EBBR/E26 - Water in broken Net Radiometer Dome |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The net radiation measurement is incorrect. Measurements calculated using net radiation are also incorrect. No work-around is possible for this situation. |
Measurements: | sgp30ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/01/2002 | 0845 | 11/06/2002 | 0130 |
Subject: | SGP/EBBR/E26 - Battery Voltage Low |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | When Battery Voltage drops below 10.5 volts, most measurements are suspect and some are often incorrect. The user will need to inspect the data carefully to determine the useability of the data. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/04/2002 | 1015 | 01/10/2003 | 1600 |
Subject: | SGP/EBBR/E26 - AEM Hung |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The AEM hung inbetween home positions during the period. The Bowen ratio, gradient measurements, sensible heat flux, and latent heat flux are incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/10/2003 | 1900 | 01/10/2003 | 1904 |
Subject: | SGP/EBBR/E26 - Data zeros following logger restart |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Most measurements were zero after restart of the CR10 datalogger, after a calibration changeout of the EBBR unit. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/14/2003 | 1725 | 01/23/2003 | 1715 |
Subject: | SGP/EBBR/E26 - Left Air Temperature Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The left air temperature was incorrect during the period. Poor electronic connections may have caused this. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/19/2003 | 1900 | 05/16/2003 | 1500 |
Subject: | SGP/EBBR/E26 - E26 EBBR Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Soil Heat Flow #1 was incorrect much of the time. The sensor was replaced. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/24/2003 | 1635 | 03/06/2003 | 1520 |
Subject: | SGP/EBBR/E26 -Right Air Temperature Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | One of the Right Air Temperature connections was loose, producing incorrect data. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/17/2003 | 1445 | 04/17/2003 | 1535 |
Subject: | SGP/EBBR/E26 - 6 Month Checks |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/12/2003 | 0230 | 06/12/2003 | 0300 |
06/13/2003 | 1200 | 06/13/2003 | 1230 |
Subject: | SGP/EBBR/E26 - Soil Heat Flow #5 Large Positive |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Soil Heat Flow #5 was large positive for these two periods, for an unknown reason. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/21/2003 | 1600 | 08/21/2003 | 1600 |
Subject: | SGP/EBBR/E26 - Soil Storage Incorrect; Surface Fluxes Incorrect |
DataStreams: | sgp30ebbrE26.b1 |
Description: | The half hour after restart of the CR10 datalogger, the soil temperatures for the beginning of the period are missing. Therefore the soil energy storage and surface flux values are also incorrect. |
Measurements: | sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/30/2003 | 1545 | 11/13/2003 | 1545 |
Subject: | SGP/EBBR/E26 - AEM Home Signals Incorrect, Surface Fluxes Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | During a preventative maintenance visit to perform the 6-month calibrations, the home15 and home30 outputs began reading the same as one another. A fuse replacement and lubrication of the AEM sprockets on 11/13 corrected the problem. During the interval specified, the home15, home30, and sensible and latent heat fluxes are incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/30/2003 | 1535 | 10/30/2003 | 1615 |
Subject: | SGP/EBBR/E26 - 6 Month Checks |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 0000 | 09/29/2004 | 1845 |
Subject: | SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | In a trip to E26, I found that a bad spark gap through which the barometer was powered was causing pressure measurements to be incorrect. The pressure readings oscillated with the voltage of the EBBR battery. During daytime the voltage and thus the pressure would increase and vice versa during dark hours. Apparently only the positive side of the power supply was properly connected through the spark gap and thus the voltage received by the pressure sensor was lower than required to power it properly. Under this condition the perssure measurement varies with voltage level. The pressure measurements therefore had a diurnal signature and usually were incorrect. The decreased pressure during most times would cause latent heat flux to be slightly overestimated and sensible heat flux to be slightly underestimated. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/12/2003 | 1935 | 12/14/2003 | 1615 |
Subject: | SGP/EBBR/E26 - Wind Speed Sensor Frozen By Ice Storm |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The wind speed sensor was frozen stopped by ice from a storm. The wind speed and residual wind speed measurements are incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/12/2003 | 2140 | 12/14/2003 | 1530 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Frozen By Ice Storm |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The wind direction sensor was frozen stopped by ice from a storm. The wind direction, sigma_wd, and residual wind speed measurements are incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/02/2004 | 0200 | 02/02/2004 | 1620 |
Subject: | SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | An ice storm froze the wind speed sensor to a stopped condition. The wind speed and residual wind speed measurements are incorrect. This sensor failure does not affect the sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/02/2004 | 0410 | 02/02/2004 | 1530 |
Subject: | SGP/EBBR/E26 - Wind Direction Frozen Stopped By Ice |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The wind direction sensor was frozen stopped by ice from a storm. The wind direction, sigma_wd, and residual wind speed measurements are incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/30/2004 | 1600 | 08/05/2004 | 1530 |
Subject: | SGP/EBBR/E26 - Soil Temperature #4 and Soil Heat Flow #4 Incorrect |
DataStreams: | sgp30ebbrE26.b1 |
Description: | The soil temperature and soil heat flow probes for set #4 was pulled partially out of the ground. This caused soil temperature #4 to be too high and soil heat flow #4 to be too low. The error is not so great as to cause a large error in the sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/21/2003 | 1530 | 10/12/2003 | 2355 |
Subject: | SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | In a trip to E26, I found that a bad spark gap through which the barometer was powered was causing pressure measurements to be incorrect. The pressure readings oscillated with the voltage of the EBBR battery. During daytime the voltage and thus the pressure would increase and vice versa during dark hours. Apparently only the positive side of the power supply was properly connected through the spark gap and thus the voltage received by the pressure sensor was lower than required to power it properly. Under this condition the perssure measurement varies with voltage level. The pressure measurements therefore had a diurnal signature and usually were incorrect. The decreased pressure during most times would cause latent heat flux to be slightly overestimated and sensible heat flux to be slightly underestimated. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/30/2004 | 1530 | 09/30/2004 | 1600 |
Subject: | SGP/EBBR/E26 - 6 Month Checks |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/27/2004 | 1930 | 11/05/2004 | 0100 |
11/10/2004 | 0600 | 11/24/2004 | 1500 |
Subject: | SGP/EBBR/E26 - Low Battery Voltage - Many Measurements Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | During low battery voltage conditions (< 10.5 V especially) many measurements are incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/29/2004 | 1100 | 10/29/2004 | 1600 |
Subject: | SGP/EBBR/E26 - Most Measurements Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Most of the measurements became either too large or too small. The cause is not known. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/05/2005 | 0745 | 01/07/2005 | 1530 |
Subject: | SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice Storm |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | An ice storm froze the wind speed sensor to a stopped condition. The wind speed and residual wind speed measurements are incorrect. This sensor failure does not affect the sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/05/2005 | 1020 | 01/06/2005 | 1730 |
Subject: | SGP/EBBR/E26 - Wind Direction Frozen Stopped By Ice Storm |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The wind direction sensor was frozen stopped by ice from a storm. The wind direction, sigma_wd, and residual wind speed measurements are incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/10/2004 | 1400 | 02/17/2005 | 1630 |
Subject: | SGP/EBBR/E26 - Aging Pressure Sensor Output Changes With Supply Voltage |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The E26 EBBR pressure sensor experienced the poor internal voltage regulation problem experienced at other sites last year. Aging of the internal voltage regulator caused the pressure output to drop by 1-2 kPa (0.1-0.5 kPa is normal) when the Sun rose and the solar panel goosed the battery voltage up. The sensible and latent heat fluxes were not significantly affected. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/10/2003 | 1700 | 03/03/2005 | 1600 |
Subject: | SGP/EBBR/E26 - Incorrect soil type coefficients used |
DataStreams: | sgp30ebbrE26.b1 |
Description: | The soil type coefficents for soil moisture were incorrect from the day of the system installation on, making soil moisture values too large. As a result, soil heat flows were overmeasured, and sensible and latent heat fluxes were underestimated. |
Measurements: | sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 03/31/2005 | 1700 |
Subject: | SGP/EBBR/E26 - Improved EBBR CR10 Program |
DataStreams: | sgp30ebbrE26.b1 |
Description: | Effective 20050331.1700, the EBBR.E26 CR10 program was revised to improve the quality of the primary measurements as follows: 1) An RMS procedure is used to determine max and min limits of acceptable soil heat flow. This is applied to the individual soil sets. Measurements outside the limits are rejected and the measurements within the limits are used to calculate the average soil heat flow. 2) Max and min limits are used to determine incorrect values of net radiation, sensible heat flux (h), latent heat flux (e), and automatic exchange mechanism (AEM) signal. If AEM signal is outside the limits, h and e are set to 999s. If net radiation is outside the limits, h and e are set to 999s. If h or e are outside the limits, h and e are set to 999s. Virtually no incorrect soil measurement will affect the primary measurements of h and e. By setting h and e to 999s, it can be easily seen that the primary variables are incorrect; no other interpretation is possible. Prior to 20050331, the improved CR10 program was NOT in effect. DQRs have been submitted for known instances of incorrect soil measurements which affected the quality of the primary measurements of h and e. Note: the DQR begin date is the begin date of the sgp30ebbrE26.b1 data stream. The earlier version of the CR10 program was also used on previous EBBR datastream names (e.g. sgp30ebbrE26.a1). ~ |
Measurements: | sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/03/2005 | 1800 | 03/31/2005 | 1700 |
Subject: | SGP/EBBR/E26 - Average Soil Heat Flux Incorrect |
DataStreams: | sgp30ebbrE26.b1 |
Description: | A typo in the version 9 EBBR program caused average soil heat flow to be zero, resulting in both sensible and latent heat fluxes being approximately 20 watts per meter squared too large during the middle of the day. |
Measurements: | sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 0000 | 07/22/2005 | 2359 |
Subject: | SGP/EBBR/E26 - metadata corrections |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | On 20050723, a series of metadata corrections and additions were completed. These metadata changes apply to all EBBR.E26 data collected by ARM back to the installation of the instrument in June 1992. Please see the current metadata for correct information. These changes do not affect data values or quality. The changes are summarized below: 1) Update of "sensor location" information 2) Addition of installation dates for the systems 3) Correction of soil moisture units (from "by volume" to "gravimetric") |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/20/2005 | 0800 | 12/22/2005 | 1500 |
Subject: | SGP/EBBR/E26 - Data Suspect During Low Supply Voltage |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Low battery supply voltage resulted in high home signals and questionable data at times. Data for battery voltage <10.5 volts should be considered to be incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/21/2006 | 0400 | 02/25/2006 | 1700 |
Subject: | SGP/EBBR/E26 - Measurements Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Most measurements were incorrect during low battery voltage conditions. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/28/2007 | 0140 | 10/11/2007 | 1730 |
Subject: | SGP/EBBR/E26 - Sensible and Latent Heat Fluxes Affected by bad temp sensor |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The left Thum (temperature of the humidity sensor chamber) measurement was incorrect at times, affecting several measurements, including the sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/26/2009 | 1805 | 01/28/2009 | 1955 |
Subject: | SGP/EBBR/E26 - Wind Speed Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The wind speed sensor was frozen stopped by freezing rain. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|