Field Notes
<--2017-10-26 09:15:00 | 2017-11-17 14:30:00-->Other sites visited today: Mayberry | Sherman Wetland | Bouldin Alfalfa | East End | West Pond | Twitchell Alfalfa
Bouldin Corn: 2017-11-10 10:40:00 (DOY 314)
Author: Daphne Szutu
Others: Elke, Shreeya
Summary: Regular data collection/cleaning, swapped LI-7500A (calibrated on LI-7550 v. 8.5.0), swapped LI-7550 temperature sensor, moved soil sensors back out to the field
| Bouldin Corn 2017-11-10 We arrived at 10:40. It was sunny and partly cloudy. The red underpass gate was locked, so we came in through the dirt roads from Bouldin Alfalfa. They roads were still a bit dusty. The stardot camera MAC address: 0030f4d21491. Elke cleaned the EC/radiation sensors and refilled the wash reservoir; it was 2/3 full. I collected met and camera data. We moved the soil sensors out into the field, most into the cordoned-off area with Tyler and Heather’s chambers. The Delta-T soil moisture sensor is right next to the tower because its cable was not long enough. Some of the thermocouples pulled loose when we were moving them, so we re-taped them back in place. I replaced the temperature sensor on the LI-7550. A homemade sensor came down and a factory sensor went up. The temperature was 72.2 C before swap and 21.7 C after swap. We swapped LI-7500A: sn 1594 came down (calibrated on LI-7550 embedded software 8.7.5), sn 75H-2176 (calibrated on LI-7550 embedded software 8.5.0) went up. I saved the old, full configuration: “sn1594_0614_20171110_BC.l7x.†I uploaded the new configuration file: “sn2176_0674_20171109Lab_cal.l7x.†I updated the pressure coefficients, reset the box, and checked the pressure coefficients were correct. LI-7500 readings: CO2 486.9 ppm --> 412.5 after swap H2O 812 mmol/m3 --> 538.7 after swap T 72.2 C --> 21.7 after new temperature sensor installed P 101.3 kPa --> 101.8 after swap SS 102 --> 90.7 after cleaning LI7700 readings: CH4 1.97 ppm --> 1.96 after cleaning RSSI 30.0 --> 74.0 after cleaning We left at 11:20. After we got back to the lab, noticed missing data since 10/26 9:00 PST: Campbell Sci volumetric water content sensors, VWC, PRI, NDVI, difPAR. This was right after we left the field site; probably power connections were loose after we re-wired the power supplies. Also, I probably forgot to move the Licor GHG files, so hopefully they are on the USB stick at TA. |
0 photos found
6 sets found
17 BC_met graphs found
5 BC_flux graphs found
Can't check TATWBABCSB_cam
Can't check MBSWEEWPBCBA
No data found for BC_pa.
No data found for BC_arable.