| DQR ID | Subject | Data Streams Affected | Data Quality Metric |
|---|---|---|---|
| D150522.2 | SGP/AERI/C1 - Cryocooler failure | sgpaeriC1.00 | Suspect |
| D150729.3 | SGP/AERI/C1 - Instrument run in slow sample mode. | sgpaeriC1.00 | Does not affect quality |
| D151010.1 | SGP/AERI/C1 - Reprocess: Spectral calibration to change | sgpaeriC1.00 | Incorrect |
| D160104.7 | SGP Site Power Outage Due to Winter Storm | sgpaeriC1.00 | Does not affect quality |
| D160108.4 | SGP/AERI/C1 - Instrument | sgpaeriC1.00 | Incorrect |
| D160318.6 | SGP/AERI/C1 - Reprocess: intermittent interferogram spikes. | sgpaeriC1.00 | Suspect |
| D160524.5 | SGP/AERI/C1 - Radiance contaminated from optical trailer air | sgpaeriC1.00 | Does not affect quality |
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 02/17/2015 | 0000 | 04/29/2015 | 2246 | Suspect |
| Subject: | SGP/AERI/C1 - Cryocooler failure |
| DataStreams: | sgpaeriC1.00 |
| Description: | During this time period the cryocooler began to fail and was eventually replaced. |
| Measurements: | sgpaeriC1.00:
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 07/18/2015 | 0000 | 07/20/2015 | 2359 | Does not affect quality |
| Subject: | SGP/AERI/C1 - Instrument run in slow sample mode. |
| DataStreams: | sgpaeriC1.00 |
| Description: | Data is fine but the instrument was run in slow sample mode for these 3 days. We had changed the digital meter followed by a short 3rd body test that is run in slow sample mode. The instrument wasn't not switched back to rapid sample mode during this period. |
| Measurements: | sgpaeriC1.00:
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 05/22/2015 | 0000 | 08/04/2015 | 2359 | Incorrect |
| Subject: | SGP/AERI/C1 - Reprocess: Spectral calibration to change |
| DataStreams: | sgpaeriC1.00 |
| Description: | The AERI interferometer laser was changed in the field causing the spectral calibration to change. Effects will be more noticeable for higher wavenumber data. Unless doing trace gas retrievals likely won't notice much of a change once the reprocessed data is in place. |
| Measurements: | sgpaeriC1.00:
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 12/26/2015 | 0000 | 01/01/2016 | 2359 | Does not affect quality |
| Subject: | SGP Site Power Outage Due to Winter Storm |
| DataStreams: | sgpaeriC1.00 |
| Description: | On Saturday and Sunday, December 26 and 27th a powerful winter storm (Goliath) brought sleet and freezing rain to much of Oklahoma with wind gusts of 45 MPH at times. The result was very very slick roads and mass power outages. The SGP central facility lost power at 8:55 PM CDT on Sunday, December 27th. The power was restored on 7:56 PM CDT on Wednesday, December 30th Site Emergency procedures were activated and Technicians drained water out of instrument reservoirs and other measures as needed, early Monday morning. On Wednesdays as roads and power started was restored to much of the areas east of I-35 , Site Technicians performed maintenance on several Extended Facilities. During this period, data are potentially missing, incorrect, or suspect. Carefully inspect the data before use. |
| Measurements: | sgpaeriC1.00:
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 12/31/2015 | 1516 | 01/04/2016 | 1623 | Incorrect |
| Subject: | SGP/AERI/C1 - Instrument |
| DataStreams: | sgpaeriC1.00 |
| Description: | The AERI mean radiance is unusable. The interferometer went into open loop mode during this period and never found ZPD before starting to collect data. |
| Measurements: | sgpaeriC1.00:
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 02/23/2015 | 0000 | 02/19/2016 | 2359 | Suspect |
| Subject: | SGP/AERI/C1 - Reprocess: intermittent interferogram spikes. |
| DataStreams: | sgpaeriC1.00 |
| Description: | The AERI spectra exhibit a ringing spectral feature on an intermittent basis. The symptom is a 'sawtooth' pattern in the spectrum. This occurs predominantly in Ch2, but also in Ch1. Affected records are unusable and mentor team is going to identify the spikes, remove them from the raw data and resubmit raw data to the archive. |
| Measurements: | sgpaeriC1.00:
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 01/07/2011 | 0000 | 02/24/2016 | 2359 | Does not affect quality |
| Subject: | SGP/AERI/C1 - Radiance contaminated from optical trailer air |
| DataStreams: | sgpaeriC1.00 |
| Description: | Under certain conditions, the observed atmospheric radiance at the lowest level (near the surface) is contaminated by air from inside the optical trailer. This is a result of an inadequate seal between the AERI front-end (outside) and back-end (inside the optical trailer), which let inside air penetrate into the first ~1 m of the AERI optical path. This primarily affects the 540-700 cm-1 region, and retrievals and temperature and water vapor. The result is an artifact in the amplitude of the atmospheric radiance that closely mirrors the temperature fluctuations inside the optical trailer, specifically oscillations with a period of 10-15 mins. |
| Measurements: | sgpaeriC1.00:
|