MIDC/Data Quality Statements
Total Records: 13, displaying 1-13

R#SiteSerial NumberMeasurementStart DateStart TimeEnd DateEnd TimeData Quality Statement
1BMSUpwelling PIR01/01/202216:00:0001/28/202216:51:00The SRRL BMS Upwelling PIR has large downward spikes in irradiance data due to a problem with the dome temperature measurement. The source of the problem appears to be the AM16/32B Multiplexer (which is only 2 years old). During most of this duration the BMS Upwelling PIR irradiance was being automatically substituted with the Upwelling CG3 (except except for Jan 1, 2, and 8). The MUX was replaced on 1/26/2022 to resolve this issue. The CMP22 case temperature also had a problem at random times ruing this time frame, net IR correction (for unventilated instruments) was typically automatically shutoff during such events. On 3/21/2022 the Upwelling PIR Irradiance (Jan 1, 2, and 8) were corrected by replacing the with Upwelling CG3. In addition, the Atmospheric Net Infrared (PIR) and Net Radiation was re-computed. The original raw data (TP Net, Case, Dome) were not changed.
2BMSUpwelling PIR09/16/202109:34:0009/17/202111:31:00The SRRL BMS Upwelling PIR has large upward spikes in irradiance data due to a problem with the case temperature measurement. The source of the problem appears to be the AM16/32B Multiplexer (which is only 2 years old). Either the relay has failed again or the removable terminal strip is not making a good connection. The case temperature had to be moved to the only spare channel left. During most of this duration the BMS Upwelling PIR was being automatically substituted with the Upwelling CG3 (except for a total of about 3 hours at 4 short random times).
3BMSUpwelling PIR08/05/201900:00:0008/20/201913:30:00The SRRL BMS Upwelling PIR has large upward spikes in irradiance data due to a problem with the case temperature measurement. The source of the problem appears to be the AM16/32B Multiplexer. The mux was replaced on 8/20/2019 at 13:28 MST which resolved the problem. The life of the old mux may have expired. On 8/26/2019 the Upwelling PIR Irradiance was corrected by replacing the with Upwelling CG3. In addition, the Atmospheric Net Infrared (PIR) and Net Radiation was re-computed. The original raw data (TP Net, Case, Dome) were not changed.
4BMSUpwelling PIR02/20/201313:20:0002/22/201313:30:00The SRRL BMS Upwelling PIR was not reading correctly due to water infiltration into j-box. Net Radiation (Eppley) and Atmospheric Net Infrared (PIRs) will also be incorrect. Compressed air was used to dry solder joints. Sealant was removed from the hole in the bottom of j-box to prevent water from collecting. Desiccant pack was added to j-box.
5BMSUpwelling PIR02/11/201313:50:0002/14/201308:56:00The SRRL BMS Upwelling PIR was not reading correctly due to water infiltration into j-box and signal cable to instrument. Net Radiation (Eppley) and Atmospheric Net Infrared (PIRs) will also be incorrect. Compressed air was used to dry solder joints.
6BMSUpwelling PIR11/09/201216:28:0011/13/201216:48:00The SRRL BMS Upwelling PIR was troubleshot or disconnect during this time to investigate bogus data which started on November 9 due to water infiltration into j-box and signal cable to instrument. Net Radiation (Eppley) and Atmospheric Net Infrared (PIRs) will also be bogus. None of this data during this time frame should be used.
7BMSUpwelling PIR12/09/201009:04:0012/09/201016:11:00The signal cable to the radiometer tower j-box was yanked out from the terminal screws due to construction activity at SRRL. Data for the Upwelling PIR is bogus from 09:04 to 11:48 and 14:56 to 16:11 MST; Net Radiation (Eppley) and Atmospheric Net Infrared (PIRs) will also be bogus.
8BMS31192F3Upwelling PIR07/28/200607:00:0007/28/200615:30:00Instrument thermpile signal was bogus at various times throughout the day during working hours, due to patch panel/deck cabling/data logger connection troubleshooting.
9BMS31194F3Upwelling PIR01/04/200513:40:0001/05/200508:40:00The SRRL BMS Upwelling PIR was disconnected at 13:40 MST today for testing support equipment. The Upwelling PIR will be outputing a constant ~1324 W/m^2; Net Radiation (Eppley) and Atmospheric Net Infrared (PIRs) will also be bogus.
10BMS31194F3Upwelling PIR11/05/200413:56:0001/11/200614:16:00The K0 factor was mistakenly entered as -4.8 (instead of the correct -4.58) in the datalogger program. This creates a very minor 0.22 W/m^2 bias in the irradiance levels.
11BMSUpwelling PIR12/16/200214:43:0012/17/200211:16:00The J-Box on the BMS Radiometer Tower was being replaced, data from this instrument is missing or bogus.
12BMSUpwelling PIR01/14/199911:15:0001/20/199910:50:00Downwelling and Upwelling Infrared (PIRs) were not operating correctly during this time frame, this data cannot be fixed.
13BMSUpwelling PIR01/13/199905/28/199908:00:00The inverted pyrgeometer for measuring the upwelling longwave irradiance was installed incorrectly, the thermopile output polarity has been mistakenly reversed during this time period. The resulting data from this instrument severely underestimates the upwelling infrared irradiance and should be ignored.