Equipment and Calibration
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History
| Rec No. | Date | Loc From | Title | Loc To | Notes |
|---|---|---|---|---|---|
| 6921 | 2024-10-16 | Lab none | Calibration | Lab none | Performance check done. CO2 concentrations were far from ambient and the two chambers were offset:
Average Flux: -0.4, 0.78 STDEV Average ATM: 639.8ppm, 26.5C Average Soil: 609.9ppm, 27.1C Ran a second performance check. CO2 concentrations were still far from ambient but the two chambers were more similar this time. Average Flux: -0.1, 0.17 STDEV Average ATM: 741.4ppm, 28.8C Average Soil: 735.3ppm, 29.2C |
| 6911 | 2024-10-09 | Bouldin Alfalfa Forced Diffusion A | Removed | Lab none | Removed from BA tower and brought back to the lab. The BA field is getting plowed. Joe may use this FD chamber at Tonzi/Vaira. |
| 6292 | 2023-05-09 | Bouldin Corn Forced Diffusion C | Moved | Bouldin Alfalfa Forced Diffusion A | Moved from BC to BA to replace sn FD20160001 which broke. We should have soil CO2 flux data from Whendee's chamber measurements at BC. |
| 6246 | 2023-03-08 | Lab none | Installed | Bouldin Corn Forced Diffusion C | Installed under BC tower to replace sn FD20180067 which got flooded |
| 6198 | 2023-02-28 | Factory none | Returned | Lab none | Received after repair at Eosense: CO2 sensor replaced, relay board replaced, pump replaced, concentration calibration, flux calibration |
| 6199 | 2022-08-23 | Lab none | Shipped | Factory none | Shipped to Eosense on RMA220809 for repair |
| 5444 | 2021-09-01 | Tonzi-SoilCO2 Forced Diffusion Open | Removed | Lab none | Removed from Tonzi-SoilCO2 due to consistent offset between soil and atmosphere chambers. This resulted in small fluxes when they should be pretty much zero. Replaced by sn FD20190027. |
| 5407 | 2021-08-11 | Tonzi-SoilCO2 Forced Diffusion Open | Maintenance | Tonzi-SoilCO2 Forced Diffusion Open | Performance check done. This was a double check of the last check since the CO2 concentrations were so far from ambient. The two chambers were still offset: Average Flux: 1.3, 0.37 STDEV Average ATM: 343.7ppm, 41.5C Average Soil: 408.5ppm, 41.5C Need to ask Eosense again. |
| 5370 | 2021-07-13 | Tonzi-SoilCO2 Forced Diffusion Open | Maintenance | Tonzi-SoilCO2 Forced Diffusion Open | Performance check done. Referenced to 400ppm. Large offsets need to be double checked: Average Flux: 0.8, 0.21 STDEV Average ATM: 107.4ppm, 40.2C Average Soil: 146.1ppm, 40.3C |
| 4174 | 2019-11-19 | Lab none | Installed | Tonzi Forced Diffusion Open | Installed in the open at the Tonzi soil co2 profiles |